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Applying firewall instances to interfaces

After defining firewall instances, you can apply them to interfaces, where the instances act as packet filters. Firewall instances filter
packets in one of the following ways, depending on what direction you specify when you apply the firewall instance:

in: If you apply firewall instances with the in direction, the firewall filters packets entering the interface. These packets can be traversing
the vRouter or be destined for the router.

out: If you apply instances with the out direction, the firewall filters packets leaving the interface. These packets can be traversing the
vRouter or originating on the vRouter.

local: If you apply instances with the local, the firewall filters packets destined for the vRouter. The special interface "lo" can be used to
affect packets received on any interface. Note that these instances are run after any "in" instances that may be on the interface.

You can apply many firewall instances to an interface on each direction. They are applied in the order that they are configured on the
interface and direction.

Interaction between firewall, NAT, and routing

The processing order of the various services that might be configured within the vRouter is one of the most important concepts to
understand when working with firewall functionality. If the processing order of the services is not carefully configured, the results
achieved might not be what you expect.

Traffic flow through firewall, NAT, and routing

The following figure shows how traffic flows through the firewall, NAT, and routing services within the vRouter. Notice the order of firewall
instances, destination Network Address Translation (DNAT), routing decisions, and source Network Address Translation (SNAT).

FIGURE 1 Traffic flow through firewall, NAT, and routing components

Scenario 1: firewall instances applied to inbound traffic

In this scenario, firewall instances are applied to inbound (in) traffic on an interface. Notice that firewall instances are evaluated before
DNAT and routing decisions, and after SNAT.

Firewall Overview

Brocade 5600 vRouter Firewall Configuration Guide

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Summary of Contents for 5600 vRouter

Page 1: ...Supporting Brocade 5600 vRouter 4 2R1 CONFIGURATION GUIDE Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 16 May 2016 ...

Page 2: ...es features that may not be currently available Contact a Brocade sales office for information on feature and product availability Export of technical data contained in this document may require an export license from the United States government The authors and Brocade Communications Systems Inc assume no liability or responsibility to any person or entity with respect to the accuracy of this doc...

Page 3: ... firewall NAT and routing 16 Zone based firewall 17 Control plane policing 19 Configuration Examples 21 Packet filtering 21 Filtering on source IP address 22 Filtering on source and destination IP addresses 22 Filtering on source IP address and destination protocol 23 Defining a network to network filter 24 Filtering on source MAC address 25 Excluding an address 26 Matching TCP flags 27 Matching I...

Page 4: ...r ethertype type 63 security firewall name name rule rule number fragment 64 security firewall name name rule rule number icmp 65 security firewall name name rule rule number icmpv6 67 security firewall name name rule rule number ipv6 route type number 69 security firewall name name rule rule number log 70 security firewall name name rule rule number mark action 71 security firewall name name rule...

Page 5: ...rom zone to to zone firewall name 94 security zone policy zone zone interface interface name 95 ICMPv6 Types 97 Supported Interface Types 101 List of Acronyms 103 Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 5 ...

Page 6: ...Brocade 5600 vRouter Firewall Configuration Guide 6 53 1004253 01 ...

Page 7: ...ntax examples Command syntax conventions Bold and italic text identify command syntax components Delimiters and operators define groupings of parameters and their logical relationships Convention Description bold text Identifies command names keywords and command options italic text Identifies a variable value In Fibre Channel products a fixed value provided as input to a command option is printed...

Page 8: ...ocumentation for your product and additional Brocade resources You can download additional publications supporting your product at www brocade com Select the Brocade Products tab to locate your product then click the Brocade product name or image to open the individual product page The user manuals are available in the resources module at the bottom of the page under the Documentation category To ...

Page 9: ...cade Supplemental Support augments your existing OEM support contract providing direct access to Brocade expertise For more information contact Brocade or your OEM For questions regarding service levels and response times contact your OEM Solution Provider Document feedback To send feedback and report errors in the documentation you can use the feedback form posted with the document or you can e m...

Page 10: ...Preface Brocade 5600 vRouter Firewall Configuration Guide 10 53 1004253 01 ...

Page 11: ...is Guide This guide describes firewall functionality on the Brocade 5600 vRouter referred to as a virtual router vRouter or router in the guide Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 11 ...

Page 12: ...About This Guide Brocade 5600 vRouter Firewall Configuration Guide 12 53 1004253 01 ...

Page 13: ...ng allowed CPU bound fragments from being dropped a firewall rule must be configured to allow them through the interface so that the fragments can be reassembled If neither firewall nor NAT is configured packet fragments are not inspected and are forwarded unchanged However in accordance with RFC 6192 any fragments that are destined to a router local address are dropped An input firewall allows fr...

Page 14: ...fic not matching any rule in the rule set is passed When firewall rules are present the implicit action can be automatically modified so as to allow the return traffic to PASS rather than DROP The firewall rules have no effect on the implicit action as the firewall rules are ineffective in those instances This default action can be changed by using security firewall name name default action action...

Page 15: ...6 traffic that is destined for originating from or traversing the router In firewall global statefulness overrides any state rules configured within rule sets TCP strict tracking disabled The firewall is stateless and the rules governing statefulness must be configured through the rule set TCP connections are validated by the following criteria Perform SEQ ACK numbers check against boundaries Refe...

Page 16: ...to an interface on each direction They are applied in the order that they are configured on the interface and direction Interaction between firewall NAT and routing The processing order of the various services that might be configured within the vRouter is one of the most important concepts to understand when working with firewall functionality If the processing order of the services is not carefu...

Page 17: ...red and flows freely because the interfaces share the same security level The following figure shows an example of a zone based firewall implementation This example has these characteristics Three transit zones exist that is points where traffic transits the router the private zone the demilitarized zone DMZ and the public zone The dp0p1p4 interface lies in the public zone the dp0p1p1 and dp0p1p2 ...

Page 18: ... firewall rule sets can be applied to those interfaces By default all traffic to a zone is dropped unless explicitly allowed by a filtering policy for a source zone from_zone Filtering policies are unidirectional they are defined as a zone pair that identifies the zone from which traffic is sourced from_zone and the zone to which traffic is destined to_zone In the preceding figure these unidirecti...

Page 19: ...trol plane also pass through an input or output interface and the possibility of performing duplicate state tracking can result in false positive state transitions which lead to packet drop To enforce stateful behavior strict protocol tracking or both add appropriate rules to the input or output interfaces as desired The third difference enables packets that are unmatched by a policy or rule set t...

Page 20: ...Firewall Overview Brocade 5600 vRouter Firewall Configuration Guide 20 53 1004253 01 ...

Page 21: ...l When you have finished the firewall is configured on the R1 router as shown in the following figure FIGURE 3 Firewall sample configuration This section includes the following examples Filtering on source IP address on page 22 Filtering on source and destination IP addresses on page 22 Filtering on source IP address and destination protocol on page 23 Defining a network to network filter on page ...

Page 22: ...ine a rule that filters traffic on the 176 16 0 26 source IP address vyatta R1 set security firewall name FWTEST 1 rule 1 source address 172 16 0 26 Apply FWTEST 1 to inbound packets on dp0p1p1 vyatta R1 set interfaces dataplane dp0p1p1 firewall in FWTEST 1 Commit the configuration vyatta R1 commit Show the configuration vyatta R1 show security firewall name FWTEST 1 rule 1 action accept source ad...

Page 23: ...FWTEST 2 Filtering on source IP address and destination protocol The following example shows how to define a firewall rule that filters on source IP address and destination protocol This rule allows TCP packets originating from address 10 10 30 46 that is R5 and destined for the Telnet port of R1 The instance is applied to local packets that is packets destined for this router R1 through the dp0p1...

Page 24: ...e 40 virtual interface vif 40 and the dp0p1p2 interface To create a network to network filter perform the following steps in configuration mode TABLE 4 Defining a network to network filter Step Command Create the configuration node for the FWTEST 4 firewall instance and its rule 1 This rule accepts traffic matching the specified criteria vyatta R1 set security firewall name FWTEST 4 rule 1 action ...

Page 25: ...tion mode TABLE 5 Filtering on source MAC address Step Command Create the configuration node for the FWTEST 5 firewall instance and its rule 1 This rule accepts traffic matching the specified criteria vyatta R1 set security firewall name FWTEST 5 rule 1 action accept Define a rule that filters traffic with the 00 13 ce 29 be e7 source MAC address vyatta R1 set security firewall name FWTEST 5 rule ...

Page 26: ...low all traffic that matches the rule to be accepted vyatta R1 set security firewall name NEGATED EXAMPLE rule 10 action accept Allow any traffic from the 172 16 1 0 24 network that matches the rule to be accepted vyatta R1 set security firewall name NEGATED EXAMPLE rule 10 source address 172 16 1 0 24 Allow traffic destined anywhere except the 192 168 1 100 destination address that matches the ru...

Page 27: ...et and the ACK FIN and RST flags unset perform the following steps in configuration mode TABLE 7 Accepting packets with specific TCP flags set Step Command Set the protocol to match to TCP vyatta R1 set security firewall name TCP FLAGS rule 30 protocol tcp Set the TCP flags to match vyatta R1 set security firewall name TCP FLAGS rule 30 tcp flags SYN ACK FIN RST Set the action to accept vyatta R1 ...

Page 28: ...name echo request vyatta R1 Matching groups Groups of addresses ports and networks can be defined for similar filtering For example to create a rule that rejects traffic to a group of addresses and ports and from a group of networks perform the following steps in configuration mode TABLE 9 Rejecting traffic based on groups of addresses networks and ports Step Command Add an address to an address g...

Page 29: ...nformation In contrast stateful firewalls track the state of network connections and traffic flows and allow or restrict traffic based on whether its connection state is known and authorized For example when an initiation flow is allowed in one direction the responder flow is automatically and implicitly allowed in the return direction By default the vRouter firewall is stateless If you want the f...

Page 30: ...d state rules for return traffic of that type need not be explicitly mentioned within the rule sets The global state policy that is configured applies to all IPv4 and IPv6 traffic destined for originating from or traversing the router Note that after the firewall is configured to be globally stateful this setting overrides any state rules configured within the rule set The following example shows ...

Page 31: ...e shows a zone based configuration with three user defined zones The examples that follow show the configuration for this diagram FIGURE 5 Zone based firewall configuration Filtering traffic between zones The following example shows how to filter traffic between zones by attaching rule sets to zone Configuration Examples Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 31 ...

Page 32: ... set security firewall name to_dmz rule 1 action accept vyatta R1 set security firewall name to_public rule 1 action accept Attach the rule sets to each zone vyatta R1 set security zone policy zone private to dmz firewall to_dmz vyatta R1 set security zone policy zone private to public firewall to_public vyatta R1 set security zone policy zone dmz to private firewall to_private vyatta R1 set secur...

Page 33: ...E Add the interface contained in the DMZ vyatta R1 set security zone policy zone dmz interface dp0p1p3 Create the configuration node for the private zone and give a description for the zone vyatta R1 set security zone policy zone private description PRIVATE ZONE Add one of the interfaces contained in the private zone vyatta R1 set security zone policy zone private interface dp0p1p1 Add the other i...

Page 34: ... give a description for the rule set vyatta R1 set security firewall name to_public description allow all traffic to PUBLIC zone Create a rule to accept all traffic sent to the public zone vyatta R1 set security firewall name to_public rule 1 action accept Commit the configuration vyatta R1 commit Show the firewall configuration vyatta R1 show security firewall name to_public description allow all...

Page 35: ...s example the dp0p1p3 interface is already configured Specifically It is a member of VRRP group 15 It has rule set FWTEST 1 applied for inbound traffic To apply the rule set to the VRRP interface perform the following steps in configuration mode TABLE 15 Applying a firewall rule set to a VRRP interface Step Command View the initial configuration for the interfaces vyatta R1 show interfaces datapla...

Page 36: ...ation examples on how to enable or disable CPP on Brocade 5600 vRouter data plane and loopback interfaces To enable or disable CPP on a data plane interface perform the following steps in configuration mode TABLE 16 Enabling and disabling CPP on a data plane interface Step Command Enable CPP on a data plane interface by applying a firewall instance or rule set with the local keyword vyatta R1 set ...

Page 37: ...n vyatta R1 commit Show the CPP configuration vyatta R1 show interfaces loopback lo firewall local cpp_group interfaces loopback lo firewall cpp_group Disable CPP by deleting the loopback interfacelo that is applied to a firewall instance or rule set with the local keyword vyatta R1 delete interfaces loopback lo firewall local cpp_group Commit the configuration vyatta R1 commit Configuration Examp...

Page 38: ...loopback lo firewall local CPP Commit the configuration vyatta R1 commit Save the configuration vyatta R1 save Show the CPP configuration vyatta R1 show security firewall name CPP rule 10 action accept police ratelimit 500kpps Viewing firewall information This section describes how to display firewall configuration information Showing firewall instance information You can see how firewall instance...

Page 39: ...0p1p1 firewall in FWTEST 1 Showing firewall configuration You can view firewall information in configuration nodes by using the show command in configuration mode The following example shows how to display firewall configuration in configuration mode with security firewall on page 43 vyatta R1 show security firewall name FWTEST 1 rule 1 action accept source address 172 16 0 26 name FWTEST 2 rule 1...

Page 40: ...destination address 172 16 0 0 24 source address 10 10 40 0 24 vyatta R1 Configuration Examples Brocade 5600 vRouter Firewall Configuration Guide 40 53 1004253 01 ...

Page 41: ...Global Firewall Commands clear firewall 42 security firewall 43 show security firewall interface 44 Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 41 ...

Page 42: ...ewall bridge Parameters bridge Specifies clearing firewall bridge statistics only Modes Operational mode Usage Guidelines Use this command to clear firewall statistics Global Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 42 53 1004253 01 ...

Page 43: ...e as a packet filter by using firewall related interface commands Until a firewall rule set has been applied to an interface it has no effect on traffic destined for or traversing the system Note that after the final user defined rule in a rule set is issued an implicit rule of reject all takes effect Use the set form of this command to create a firewall configuration Use the delete form of this c...

Page 44: ...ow to display statistics for firewall rule sets The output includes statistics for the configured global state and configured firewall rule sets vyatta R1 show security firewall Rulesets Information Firewall Firewall fw_1 Active on dp0p192p1 in rule action proto packets bytes 1 allow tcp 0 0 condition stateful proto tcp flags S FSRA all 8 allow any 0 0 condition stateful to 20 20 20 0 24 Rulesets ...

Page 45: ...ype 63 security firewall name name rule rule number fragment 64 security firewall name name rule rule number icmp 65 security firewall name name rule rule number icmpv6 67 security firewall name name rule rule number ipv6 route type number 69 security firewall name name rule rule number log 70 security firewall name name rule rule number mark action 71 security firewall name name rule rule number ...

Page 46: ...ble enable Usage Guidelines Use this command to specify whether the system responds to ICMP echo request messages pings These messages include all ping messages unicast broadcast or multicast Pings are a network tool that help establish the reachability of a device from the local system Pings are often disallowed because they are a potential means of denial of service DoS attacks Use the set form ...

Page 47: ...t ICMP echo request and broadcast ICMP time stamp request messages Pings are a network tool that help establish the reachability of a device from the local system Pings particularly broadcast pings are often disallowed because they are a potential means for denial of service DoS attacks Time stamp requests are used to query another device for the current date and time Time stamp requests are also ...

Page 48: ...Use the show form of this command to display the behavior to broadcast ICMP ICMP echo and time stamp request messages Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 48 53 1004253 01 ...

Page 49: ...l configuration change Modes Configuration mode Configuration Statement security firewall config trap disable enable Usage Guidelines A device uses SNMP traps to notify without solicitation the manager of the device about significant events such as firewall configuration changes Use the set form of this command to enable the generation of SNMP traps when a firewall configuration change is made Use...

Page 50: ...mp tcp udp Usage Guidelines Setting this configuration node makes the firewall globally stateful You then define policies for established traffic related traffic and invalid traffic When configured to be stateful the firewall tracks the state of network connections and traffic flows and allows or restricts traffic based on whether its connection state is known and authorized For example when an in...

Page 51: ...y for firewall Use the delete form of this command to delete a global statefulness policy for firewall Use the show form of this command to display a global statefulness policy for firewall Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 51 ...

Page 52: ... configuration node Modes Configuration mode Configuration Statement security firewall name name Usage Guidelines Use this command to create and name a firewall rule set A firewall rule set is a named collection of as many as 9 999 packet filtering rules Following the configurable rules is an implicit rule rule 10000 which denies all traffic Use the set form of this command to create and name a fi...

Page 53: ...e set drop Denies the default action for the specified rule set Modes Configuration mode Configuration Statement security firewall name name default action accept drop Usage Guidelines A firewall rule set is a named collection of as many as 9 999 packet filtering rules Following the configurable rules is an implicit rule rule 10000 which denies all traffic NOTE The deny all rule stays in effect un...

Page 54: ...cket if no prior rules are matched Modes Configuration mode Configuration Statement security firewall name name default log action drop Usage Guidelines Use this command to define an IP firewall rule set A firewall rule set is a named collection of as many as 9999 packet filtering rules Following the configurable rules is an implicit rule rule 10000 which denies all traffic NOTE The deny all rule ...

Page 55: ...enclosed in double quotation marks Modes Configuration mode Configuration Statement security firewall name name description description Usage Guidelines Providing a description for an firewall group can help you to quickly determine the purpose of the rule when viewing the configuration Use the set form of this command to provide brief description of a firewall group Use the delete form of this co...

Page 56: ...ne a rule within a firewall rule set A firewall rule set consists as many as 9 999 configurable rules Following the last configured rule a system rule rule 10000 with an action of deny all is applied To avoid having to renumber firewall rules a good practice is to number rules in increments of 10 This increment allows room for the insertion of new rules within the rule set Use the set form of this...

Page 57: ...mit time but the configuration does not function unless only one action is specified drop Drops the packet silently To be performed when a packet satisfies the match criteria specified in the rule Exactly one action must be specified The system does not enforce this one action limit at commit time but the configuration does not function unless only one action is specified Modes Configuration mode ...

Page 58: ...ion of the rule If the description contains spaces it must be enclosed in double quotation marks Modes Configuration mode Configuration Statement security firewall name name rule rule number description description Usage Guidelines Providing a description for a firewall rule can help you to quickly determine the purpose of the rule when viewing the configuration Use the set form of this command to...

Page 59: ...p address prefix A network address where 0 matches any network for example fe80 20c 29fe fe47 f88 64 ipv6 address All IP addresses except the one specified ip address prefix All network addresses except the one specified When both an address and a port are specified the packet is considered a match only if both the address and the port match mac address address Matches the media access control MAC...

Page 60: ... address MAC address or destination port within a firewall rule set Use the delete form of this command to delete a destination address MAC address or destination port from a firewall rule set Use the show form of this command to display a destination address MAC address or destination port from a firewall rule set Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 60 53 1004253 0...

Page 61: ... ranges from 1 through 9999 Modes Configuration mode Configuration Statement security firewall name name rule rule number disable Usage Guidelines Use this command to disable an IP firewall rule Disabling a firewall rule is a useful way to test how the firewall performs minus a specific rule without having to delete and then re enter the rule Use the set form of this command to disable a firewall ...

Page 62: ...r best effort traffic afnumber The Assured Forwarding Class for assurance of delivery as defined in RFC 2597 Depending on the forwarding class and the drop precedence the class can be one of the following values af11 through af13 af21 through af23 af31 through af33 or af41 through af43 csnumber Class Selector for network devices that use the Precedence field in the IPv4 header The number ranges fr...

Page 63: ...l value for the Ethernet type Modes Configuration mode Configuration Statement security firewall name name rule rule number ethertype type Usage Guidelines Use this command to configure the firewall to accept or drop specified types of Ethernet packets After you define a firewall rule set with the Ethernet type you must apply it to an interface as a packet filter by using the firewall related inte...

Page 64: ... before they reach the firewall so this option will not match any IPv4 fragments IPv6 fragments are re assembled before they reach the firewall so this option will not match IPv6 fragments Modes Configuration mode Configuration Statement security firewall name name rule rule number fragment Usage Guidelines Use the set form of this command to define the matching of fragmented packets within a fire...

Page 65: ... numeric ICMP types Types range from 0 through 255 for example 8 echo request or 0 echo Reply For a list of ICMP codes and types refer to GUID FC283D5F CB6D 4000 9EFD 314BA6C5FF2F code number Specifies matching for numeric ICMP codes Codes range from 0 through 255 For a list of ICMP codes and types refer to GUID FC283D5F CB6D 4000 9EFD 314BA6C5FF2F name name Specifies matching for ICMP type names ...

Page 66: ... a firewall rule set Use the delete form of this command to delete an ICMP firewall rule from a firewall rule set Use the show form of this command to display an ICMP firewall rule from a firewall rule set Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 66 53 1004253 01 ...

Page 67: ...hrough 9999 type number Specifies matching for numeric ICMPv6 types Types range from 0 through 255 For a list of ICMPv6 codes and types refer to ICMPv6 Types on page 97 code number Specifies matching for numeric ICMPv6 codes Codes range from 0 through 255 For a list of ICMPv6 codes and types refer to ICMPv6 Types on page 97 name name Specifies matching for ICMPv6 type names For a list of ICMPv6 co...

Page 68: ... an IPv6 ICMP firewall rule within a firewall rule set Use the delete form of this command to delete an IPv6 ICMP firewall rule from a firewall rule set Use the show form of this command to display an IPv6 ICMP firewall rule from a firewall rule set Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 68 53 1004253 01 ...

Page 69: ...e rule number ipv6 route type number Usage Guidelines NOTE This command can be used to block Type 0 Routing Headers in IPv6 RFC 5095 deprecates the use of Type 0 Routing Headers in IPv6 because they are a security risk Use the set form of this command to define the IPv6 route type for a firewall rule set After you run the set form of this command you must configure the protocol to match vyatta vya...

Page 70: ... firewall rule set rule number The numeric identifier of a rule The identifier ranges from 1 through 9999 Modes Configuration mode Configuration Statement security firewall name name rule rule number log Usage Guidelines Use the set form of this command to enable or disable logging of firewall rule actions Use the delete form of this command to delete the logging value for a rule Use the show form...

Page 71: ...r The traffic classifier for the per hop behavior defined by the DS field in the IP header default The Default Class 00000 for best effort traffic afnumber the Assured Forwarding Class for assurance of delivery as defined in RFC 2597 Depending on the forwarding class and the drop precedence the class can be one of the following values af11 through af13 af21 through af23 af31 through af33 or af41 t...

Page 72: ...irewall rule set Use the delete form of this command to delete the packet marking action within a firewall rule set Use the show form of this command to display the packet marking action within a firewall rule set Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 72 53 1004253 01 ...

Page 73: ...ier of a rule The identifier ranges from 1 through 9999 pcp pcp number The 802 1 priority code point number The number can range from 0 through 7 Modes Configuration mode Configuration Statement security firewall name name rule rule number pcp pcp number Usage Guidelines Use the set form of this command to define the PCP within a firewall rule set Use the delete form of this command to delete the ...

Page 74: ... scaling suffix representing the rate for example 10mbit The following suffixes are supported No suffix Kilobits per second mbit Megabits per second mbps Megabytes per second gbit Gigabits per second kbps Kilobytes per second gbps Gigabytes per second burst limit The burst size limit in number of bytes The number can range from 1 through 312500000 ratelimit limit The number of packets that can be ...

Page 75: ...en action is specified then the default action is to drop the packet if police limits are exceeded Use the set form of this command to enable or disable policing of firewall rule actions Use the delete form of this command to delete the policing value for a rule Use the show form of this command to display the policing value for a rule Firewall Commands Brocade 5600 vRouter Firewall Configuration ...

Page 76: ...protocol literals or numbers listed in the etc protocols file can be specified Modes Configuration mode Configuration Statement security firewall name name rule rule number protocol protocol Usage Guidelines Use the set form of this command to define the protocol type to match for a firewall rule Use the delete form of this command to delete the protocol type to match for a firewall rule Use the s...

Page 77: ...ss prefix A network address where 0 matches any network for example fe80 20c 29fe fe47 f88 64 ipv6 address All IP addresses except the one specified ipv6 address prefix All network addresses except the one specified When both an address and a port are specified the packet is considered a match only if both the address and the port match mac address address Matches the media access control MAC addr...

Page 78: ...a source address MAC address or source port within a firewall rule set Use the delete form of this command to delete a source address MAC address or source port from a firewall rule set Use the show form of this command to display a source address MAC address or source port from a firewall rule set Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 78 53 1004253 01 ...

Page 79: ...ate Matches or fails to match related packets depending on the value of state Related packets are packets related to existing connections Values for state are as follows enable Matches related flows disable Does not match related flows Modes Configuration mode Configuration Statement security firewall name name rule rule number state state Usage Guidelines Use the set form of this command to enabl...

Page 80: ... keywords are SYN ACK FIN RST URG and PSH When specifying more than one flag flags should be comma separated For example the value of SYN ACK FIN RST matches packets with the SYN flag set and the ACK FIN and RST flags unset Modes Configuration mode Configuration Statement security firewall name name rule rule number tcp flags flags Usage Guidelines Use the set form of this command to define the TC...

Page 81: ...Message Protocol ICMP for messaging for the session log closed In a closed state established In an established state new In a new state timeout In a timeout state other To use protocols other than TCP UDP or ICMP for session logging tcp To use Transmission Control Protocol TCP for session logging udp To use User Datagram Protocol UDP for session logging Modes Configuration mode Configuration State...

Page 82: ...nd allows or restricts traffic based on whether its connection state is known and authorized For example when an initiation flow is allowed in one direction the stateful firewall automatically allows responder flows in the return direction The statefulness policy that is configured applies to all IPv4 and IPv6 traffic destined for originating from or traversing the router After the firewall is con...

Page 83: ...traffic related to established connections and invalid traffic This command enables the user to toggle between loose or strict stateful behaviors for TCP To do so stateful tracking must be enabled through either a state rule or global rule When firewall is globally stateful policies for established related and invalid traffic must be defined Use the delete form of this command to disable TCP stric...

Page 84: ...l instance or rule set CPP has no effect on traffic that is traversing the vRouter or destined to the vRouter until the firewall rule set has been applied to the data plane by using this command To use CPP you must first define a firewall rule set as a named firewall instance and then apply the firewall instance to a data plane interface by using this command After the firewall instance or rule se...

Page 85: ...you must define a firewall rule set as a named firewall instance by using security firewall name name on page 52 You then apply the firewall instance to interfaces virtual interfaces or both by using this command After the instance is applied it acts as a packet filter For each interface you can apply up to three firewall instances one firewall in instance one firewall out instance and one firewal...

Page 86: ...s a group of IP addresses that are referenced in firewall rules Refer to Brocade 5600 vRouter Basic Routing Configuration Guide resources group port group Defines a group of ports that are referenced in firewall rules Refer to Brocade 5600 vRouter Basic Routing Configuration Guide Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 86 53 1004253 01 ...

Page 87: ...e zone default action action 91 security zone policy zone zone description description 92 security zone policy zone from zone to to zone 93 security zone policy zone from zone to to zone firewall name 94 security zone policy zone zone interface interface name 95 Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 87 ...

Page 88: ...ommand Default Statistics are cleared on all firewall zones Modes Operational mode Usage Guidelines Use this command to clear statistics for firewall rules that are applied to zones Zone Based Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 88 53 1004253 01 ...

Page 89: ...de Usage Guidelines Use this command to display the security zone policy for a security zone or security policies for all security zones Examples The following example shows how to display security zone policies for all security zones on the R1 router vyatta R1 show zone policy Name LAN1 Interfaces dp0p256p1 To Zone name firewall LAN2 fw_1 Name LAN2 Interfaces dp0p192p1 To Zone name firewall LAN1 ...

Page 90: ...fic flowing between zones By default traffic to a zone is dropped unless a policy has been defined for the zone sending the traffic Traffic flowing within a zone is not filtered When defining a zone keep the following in mind An interface can be a member of only one zone An interface that is a member of a zone cannot have a firewall rule set directly applied to it For interfaces not assigned to a ...

Page 91: ...r traffic arriving at a security zone Modes Configuration mode Configuration Statement security zone policy zone zone default action accept drop Usage Guidelines This action is taken for all traffic arriving from a zone for which a policy has not been defined That is for traffic from a given zone to be allowed a policy must be explicitly defined that allows traffic from that zone Use the set form ...

Page 92: ...ned description A brief description for the security zone If the description contains spaces it must be enclosed in double quotation marks Modes Configuration mode Configuration Statement security zone policy zone zone description description Usage Guidelines Use the set form of this command to provide a description Use the delete form of this command to delete a description Use the show form of t...

Page 93: ...h traffic is destined Modes Configuration mode Configuration Statement security zone policy zone from zone to to zone Usage Guidelines Use this command to specify a source zone of traffic The packet filtering policy for this from zone is applied to all traffic arriving from the zone Use the set form of this command to specify a source zone Use the delete form of this command to delete a source zon...

Page 94: ...of a security zone for which traffic is destined name The name of a firewall rule set Modes Configuration mode Configuration Statement security zone policy zone from zone to to zone firewall name Usage Guidelines You can apply a rule set as a packet filter for a from zone Use the set form of this command to specify a rule set as a packet filter for a from zone Use the delete form of this command t...

Page 95: ... Configuration mode Configuration Statement security zone policy zone zone interface interface name Usage Guidelines All interfaces in the zone have the same security level traffic arriving to those interfaces from other zones is all treated in the same way Traffic flowing between interfaces in the same security zone is not filtered Use the set form of this command to add an interface to a zone Us...

Page 96: ...Zone Based Firewall Commands Brocade 5600 vRouter Firewall Configuration Guide 96 53 1004253 01 ...

Page 97: ...t exceeded in transit 1 ttl zero during reassembly Fragment reassembly time exceeded 4 Parameter problem parameter problem 0 bad header Erroneous header field encountered 1 unknown header type Unrecognized Next Header type encountered 2 unknown option Unrecognized IPv6 option encountered 128 Echo request 0 echo request ping Echo request 129 Echo reply 0 echo reply pong Echo reply 133 Router solici...

Page 98: ... the required minimum 4 Source quench 0 source quench Source is quenched congestion control 5 Redirect message redirect Redirected message 0 network redirect Datagram is redirected for the network 1 host redirect Datagram is redirected for the host 2 ToS network redirect Datagram is redirected for the ToS and network 3 ToS host redirect Datagram is redirected for the ToS and host 8 Echo request 0 ...

Page 99: ... 0 Information reply 17 Address mask request 0 address mask request Address mask request 18 Address mask reply 0 address mask reply Address mask reply 19 Ping ping A ping message 20 Pong pong A pong message ICMPv6 Types Brocade 5600 vRouter Firewall Configuration Guide 53 1004253 01 99 ...

Page 100: ...ICMPv6 Types Brocade 5600 vRouter Firewall Configuration Guide 100 53 1004253 01 ...

Page 101: ...r typically a small number For example dp0s2 dpxPnpypz The name of a data plane interface on a device that is installed on a secondary PCI bus where Pn specifies the bus number You can use this format to name data plane interfaces on large physical devices with multiple PCI buses For these devices it is possible to have network interface cards installed on different buses with these cards having t...

Page 102: ... interface The type and identifier of a parent interface for example data plane dp0p1p2 or bridge br999 group A VRRP group identifier The name of a VRRP interface is not specified The system internally constructs the interface name from the parent interface identifier plus the VRRP group number for example dp0p1p2v99 Note that VRRP interfaces support the same feature set as does the parent interfa...

Page 103: ...nfiguration Protocol DHCPv6 Dynamic Host Configuration Protocol version 6 DLCI data link connection identifier DMI desktop management interface DMVPN dynamic multipoint VPN DMZ demilitarized zone DN distinguished name DNS Domain Name System DSCP Differentiated Services Code Point DSL Digital Subscriber Line eBGP external BGP EBS Amazon Elastic Block Storage EC2 Amazon Elastic Compute Cloud EGP Ext...

Page 104: ...ght Directory Access Protocol LLDP Link Layer Discovery Protocol MAC medium access control mGRE multipoint GRE MIB Management Information Base MLD Multicast Listener Discovery MLPPP multilink PPP MRRU maximum received reconstructed unit MTU maximum transmission unit NAT Network Address Translation NBMA Non Broadcast Multi Access ND Neighbor Discovery NHRP Next Hop Resolution Protocol NIC network i...

Page 105: ...C Stateless Address Auto Configuration SNMP Simple Network Management Protocol SMTP Simple Mail Transfer Protocol SONET Synchronous Optical Network SPT Shortest Path Tree SSH Secure Shell SSID Service Set Identifier SSM Source Specific Multicast STP Spanning Tree Protocol TACACS Terminal Access Controller Access Control System Plus TBF Token Bucket Filter TCP Transmission Control Protocol TKIP Tem...

Page 106: ...Acronym Description WAN wide area network WAP wireless access point WPA Wired Protected Access List of Acronyms Brocade 5600 vRouter Firewall Configuration Guide 106 53 1004253 01 ...

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