01-12-2007 05:38 AM - edited 03-05-2019 01:44 PM
what exactly the command "no ip unreachables" or "ip reachables" does?
01-12-2007 05:52 AM
hope this URL will give you some clue.
rate if it does ...
01-12-2007 05:53 AM
Hi,
this command will enable or disable the creation of ICMP unreachable messages. For all details have a look at the command reference:
Hope this helps! Please use the rating system.
Regards, Martin
01-12-2007 07:07 AM
In addition to the above post i would like to add that a Cisco switch can generate automatically three types of ICMP messages: Host Unreachable, Redirect and Mask Reply. An attacker can use these messages to aid in mapping a network.
Hence these commands are generally disabled on the interface as a security policy.
HTH, rate if it does
Narayan
01-12-2007 07:15 AM
It is worthwhile to understand the fundamentals before seeing how it is implemented:
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