Dell PowerConnect Brocade 300 Fabric OS Administrator's Guide v7.1.0 - Page 191
Unblocking Telnet
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Telnet protocol 6 ATTENTION The rule number assigned must precede the default rule number for this protocol. For example, in the defined policy, the Telnet rule number is 2. Therefore, to effectively block Telnet, the rule number to assign must be 1. If you choose not to use 1, you must delete the Telnet rule number 2 after adding this rule. Refer to "Deleting a rule from an IP Filter policy" on page 223 for more information on deleting IP filter rules. 6. Save the new IP filter policy by typing the ipfilter --save command. 7. Verify the new policy is correct by typing the ipFilter --show command. 8. Activate the new IP filter policy by typing the ipfilter --activate command. switch:admin> ipfilter --activate BlockTelnet 9. Verify the new policy is active (the default_ipv4 policy should be displayed as defined). switch:admin> ipfilter --show Name: BlockTelnet, Type: ipv4, State: defined Rule Source IP Protocol Dest Port 1 any tcp 23 2 any tcp 22 3 any tcp 22 4 any tcp 897 5 any tcp 898 6 any tcp 111 7 any tcp 80 8 any tcp 443 9 any udp 161 10 any udp 111 11 any udp 123 12 any tcp 600 - 1023 13 any udp 600 - 1023 Action deny permit permit permit permit permit permit permit permit permit permit permit permit Name: default_ipv4, Type: ipv4, State: defined Rule Source IP Protocol Dest Port 1 any tcp 22 2 any tcp 23 3 any tcp 897 4 any tcp 898 5 any tcp 111 6 any tcp 80 7 any tcp 443 8 any udp 161 9 any udp 111 10 any udp 123 11 any tcp 600 - 1023 12 any udp 600 - 1023 Action permit permit permit permit permit permit permit permit permit permit permit permit Unblocking Telnet Use the following procedure to unblock Telnet access. 1. Connect to the switch through a serial port or SSH and log in as admin. 2. Enter the ipfilter --delete command. Fabric OS Administrator's Guide 191 53-1002745-02
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