Telnet Service Options
October 28, 2008 at 3:04 pm | Posted in System Management | Leave a comment12.12 Telnet Service Options
- Configure R3 to source all telnet sessions from its Loopback0 interface, and to use a marking of IP Precedence 3 for these packets.
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- Idle outgoing telnet sessions should signal the remote host to pause output.
- Display the message “Sorry, your connection failed” when a telnet connection to the above host fails.
Configuration
Rack1R3#sh run service telnet-zeroidle ip telnet source-interface Loopback0 ip telnet tos 60 ip telnet quiet ip telnet hidden hostnames ip telnet hidden addresses ip host R4 150.1.4.4 busy-message R4 ^CSorry, your connection failed^C Rack1R3(config)#service ? alignment Control alignment correction and logging compress-config Compress the nvram configuration file config TFTP load config files dhcp Enable DHCP server and relay agent disable-ip-fast-frag Disable IP particle-based fast fragmentation exec-callback Enable exec callback exec-wait Delay EXEC startup on noisy lines finger Allow responses to finger requests hide-telnet-addresses Hide destination addresses in telnet command linenumber enable line number banner for each exec nagle Enable Nagle's congestion control algorithm old-slip-prompts Allow old scripts to operate with slip/ppp pad Enable PAD commands password-encryption Encrypt system passwords prompt Enable mode specific prompt pt-vty-logging Log significant VTY-Async events sequence-numbers Stamp logger messages with a sequence number slave-log Enable log capability of slave IPs tcp-keepalives-in Generate keepalives on idle incoming network connections tcp-keepalives-out Generate keepalives on idle outgoing network connections tcp-small-servers Enable small TCP servers (e.g., ECHO) telnet-zeroidle Set TCP window 0 when connection is idle timestamps Timestamp debug/log messages udp-small-servers Enable small UDP servers (e.g., ECHO)
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