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Cisco Bug: CSCun40620 - ASA IPSec - DNS reply for RA client dropped when LZS compression enabled

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.1(4)

Description (partial)

Symptom:
-- DNS not working for Cisco VPN Client users connecting to an ASA.
-- DNS resolution going througfh a VPN tunnel for a remote access VPN users using Cisco VPN client are dropped on ASA.

Conditions:
-- LZS compression enabled
-- DNS requests send through an IPSec remote access VPN to a DNS server located behind an ASA.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
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