Really silly telnet question......

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Jun 11th, 2008
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I'm trying to configure a 6506 with SSH access only. The SSH bit works fine, but I can't find a way of turning telnet off in CATOS!

Restricting the 'ip permit' list doesn't stop the switch from answering anyone on port 22 which is what we want.

Can you think of a way to completely disable telnet in CATOS, short of configuring ACLs to drop port 23 traffic?


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andrew.burns Wed, 06/11/2008 - 04:40
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This is really a good question, but I'm not sure it's possible (i.e. disabling the telnet subsystem) although you should be able to achieve what you want with a VACL.

Alternatively, configuring a telnet permit list without any entries should also stop anyone telnetting to the switch but may not close port 23. (I've not tried this so I don't know for sure)



Collin Clark Wed, 06/11/2008 - 05:38
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You can disable it (I have about 50 switches that have it removed). Remove the <font size="2">set ip permit [address] telnet </font>.

Hope that helps


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