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•
VLAN firewall filter—VLAN firewall filters provide access control for packets that enter
a VLAN, are bridged within a VLAN, and leave a VLAN. You can apply VLAN firewall
filters in both ingress and egress directions on a VLAN. VLAN firewall filters are applied
to all packets that are forwarded to or forwarded from the VLAN.
•
Router (Layer 3) firewall filter—You can apply a router firewall filter in both ingress and
egress directions on Layer 3 (routed) interfaces and routed VLAN interfaces (RVIs).
You can apply a router firewall filter in the ingress direction on the loopback interface
(
lo0
) also.
NOTE:
Firewall filters configured on loopback interfaces are applied only
to packets that are sent to the routing engine CPU for further processing.
Firewall filters are not applied to packets transiting the management
interface (
me0
).
On J-EX4200 and J-EX8200 Ethernet switches, you can apply a router firewall filter
to both IPv4 and IPv6 traffic. You can apply firewall filter match conditions to IPv6
traffic on Layer 3 interfaces, aggregated Ethernet interfaces, and loopback interfaces.
To configure port firewall filters and VLAN firewall filters for IPv6 traffic, you must
include the match condition
ether-type ipv6
and apply the filter on Layer 2 interfaces
or VLANs. When you include the match condition
ether-type ipv6
in a term, you must
ensure that other match conditions specified in the term are valid for IPv6 traffic. If the
port firewall filter or VLAN firewall filter term contains the match condition
ether-type
ipv6
, with no other IPv6 match condition specified, all IPv6 traffic is matched.
NOTE:
A term without the match condition
ether-type ipv6
applies only to
IPv4 traffic, and a term with that match condition applies only to IPv6 traffic.
Hence, to configure port and VLAN firewall filters for both IPv4 and IPv6
traffic, you should configure two different terms, once each for IPv4 and IPv6
traffic.
To apply a firewall filter, you must:
1.
Configure the firewall filter.
2.
Apply the firewall filter to a port, VLAN, or Layer 3 interface. You can apply a firewall
filter to aggregated Ethernet interfaces and loopback interfaces also.
Firewall Filter Components
In a firewall filter, you first define the family address type, (
ethernet-switching
,
inet
, or
inet6
), and then you define one or more terms that specify the filtering criteria and the
action to take if a match occurs.
The maximum number of terms allowed per firewall filter depends on the switch platform:
•
2048 for J-EX4200 switches—as allocated by the dynamic allocation of Ternary
Content Addressable Memory (TCAM) for port, VLAN, and router firewall filters
2722
Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
Summary of Contents for PowerConnect J-EX8208
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Page 383: ...CHAPTER 21 Configuration Statements for Power Management 311 ...
Page 387: ...CHAPTER 22 Operational Mode Commands for Power Management 315 ...
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Page 505: ...CHAPTER 33 Operational Mode Commands for User and Access Management 433 ...
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Page 581: ...CHAPTER 38 Operational Mode Commands for System Services 509 ...
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Page 631: ...CHAPTER 41 Configuration Statements for System Monitoring 559 ...
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Page 683: ...CHAPTER 42 Operational Mode Commands for System Monitoring 611 ...
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Page 907: ...CHAPTER 49 Operational Mode Commands for Virtual Chassis 835 ...
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Page 1061: ...CHAPTER 56 Operational Mode Commands for Interfaces 989 ...
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Page 1297: ...CHAPTER 63 Operational Mode Commands for Bridging and VLANs 1225 ...
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Page 1461: ...CHAPTER 69 Operational Mode Commands for Spanning Tree Protocols 1389 ...
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Page 1819: ...CHAPTER 74 Operational Commands for Layer 3 Protocols 1747 ...
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Page 2215: ...CHAPTER 80 Operational Mode Commands for IGMP Snooping and Multicast 2143 ...
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Page 2341: ...Figure 49 Topology for Configuration 2269 Chapter 82 Examples Access Control Configuration ...
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Page 2537: ...CHAPTER 86 Operational Commands for 802 1X 2465 ...
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Page 2777: ...CHAPTER 99 Operational Mode Commands for Port Security 2705 ...
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Page 3049: ...CHAPTER 112 Operational Mode Commands for CoS 2977 ...
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Page 3117: ...CHAPTER 119 Operational Mode Commands for PoE 3045 ...
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Page 3211: ...CHAPTER 125 Operational Mode Commands for MPLS 3139 ...
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Page 3603: ...CHAPTER 134 Operational Mode Commands for General Network Management and Monitoring 3531 ...
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