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Fabric OS Administrator’s Guide
53-1002745-02
Telnet protocol
6
SNMP security levels
Use the snmpConfig
--
set seclevel command to set the security level. For more information about
using the Brocade SNMP agent, refer to the
Fabric OS MIB Reference
.
SNMP configuration
Use the snmpConfig
--
set command to change either the SNMPv3 or SNMPv1 configuration. You
can also change access control, MIB capability, and system group.
For details on Brocade MIB files, naming conventions, loading instructions, and information about
using the Brocade SNMP agent, refer to the
Fabric OS MIB Reference
.
Telnet protocol
Telnet is enabled by default. To prevent passing clear text passwords over the network when
connecting to the switch, you can block the Telnet protocol using an IP filter policy. For more
information on IP filter policies, refer to
“IP Filter policy”
on page 217.
ATTENTION
Before blocking Telnet, make sure you have an alternate method of establishing a connection with
the switch.
Blocking Telnet
If you create a new policy using commands with just one rule, all the missing rules have an implicit
deny and you lose all IP access to the switch, including Telnet, SSH, and management ports.
Use the following procedure to block Telnet access.
1. Connect to the switch and log in using an account with admin permissions.
2. Clone the default policy by typing the ipFilter
--
clone command.
switch:admin>
ipfilter --clone BlockTelnet -from default_ipv4
3. Save the new policy by typing the ipFilter
--
save command.
switch:admin>
ipfilter --save BlockTelnet
4. Verify the new policy exists by typing the ipFilter
--
show command.
switch:admin>
ipfilter --show
5. Add a rule to the policy, by typing the ipFilter
--
addrule
command.
switch:admin>
ipfilter --addrule BlockTelnet -rule 1 -sip any -dp 23 -proto
tcp -act deny
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Страница 132: ...132 Fabric OS Administrator s Guide 53 1002745 02 Frame Redirection 4 ...
Страница 194: ...194 Fabric OS Administrator s Guide 53 1002745 02 Ports and applications used by switches 6 ...
Страница 254: ...254 Fabric OS Administrator s Guide 53 1002745 02 Brocade configuration form 8 ...
Страница 274: ...274 Fabric OS Administrator s Guide 53 1002745 02 Validating a firmware download 9 ...
Страница 302: ...302 Fabric OS Administrator s Guide 53 1002745 02 Creating a logical fabric using XISLs 10 ...
Страница 344: ...344 Fabric OS Administrator s Guide 53 1002745 02 Concurrent zone transactions 11 ...
Страница 374: ...374 Fabric OS Administrator s Guide 53 1002745 02 Setting up TI over FCR sample procedure 12 ...
Страница 432: ...432 Fabric OS Administrator s Guide 53 1002745 02 Access Gateway N_Port failover with FA PWWN 16 ...
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Страница 490: ...490 Fabric OS Administrator s Guide 53 1002745 02 Ports on Demand 18 ...
Страница 498: ...498 Fabric OS Administrator s Guide 53 1002745 02 Supported topologies for ICL connections 19 ...
Страница 626: ...626 Fabric OS Administrator s Guide 53 1002745 02 Preparing a switch for FIPS B ...
Страница 630: ...630 Fabric OS Administrator s Guide 53 1002745 02 Hexadecimal Conversion C ...
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