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Cannot Telnet to a router with NAT enabled. Clearing the NAT table only temporarily resolves the problem

TCC_2
Level 10
Level 10

‎06-22-2009 05:07 PM - edited ‎03-01-2019 04:05 PM

Core Issue

This is most likely caused by a Network Address Translation (NAT) misconfiguration, such as permitting any packets in the Access Control List (ACL) used for NAT.

Resolution

Permit only the necessary subnets to translate.

For information on NAT support, refer to the Does Cisco IOS NAT support ACLs that permit any or all packets? section of the NAT Frequently Asked Questions.

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