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Cisco Bug: CSCul98420 - 'Route-Lookup' Behavior Assumed for Twice NAT with Identity Destination

Last Modified

Aug 14, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

8.4(6.4)

Description (partial) 

Symptom:
Adaptive Security Appliance (ASA) or ASA Services Module implicitly perform a destination route lookup for Twice NAT entries with an identity destination translation even when the route-lookup keyword is not used.

Conditions:
Using an identity destination translation with Twice NAT such as this:

nat (inside,outside2) source dynamic 192_168_1_20 interface destination static ANY ANY service HTTP HTTP

and running a software image with the fix for CSCuf71119.

Related Community Discussions

NAT lookup changes in 9.1.5
I did a upgrade on HA from 9.1.2 to 9.1.5, but after upgrade the lookup behavior has changed.   on 9.1.2 it's NAT ______ packet-tracer input INSIDE tcp 10.10.0.10 5555 1.1.1.1 443 Phase: 1 Type: UN-NAT Subtype: static Result: ALLOW Config: nat (INSIDE,OUTSIDEPUB) after-auto source static NET_10.0.0_8 NET_10.0.0_8 service Shttps443 Shttps443 no-proxy-arp Additional Information: NAT divert to egress interface OUTSIDEPUB Untranslate 1.1.1.1/443 to 1.1.1.1/443 Phase: 2 Type: ACCESS-LIST Subtype: log ...
Latest activity: Jan 20, 2015
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