Tuesday, March 18, 2014

Cisco ASA ASDM Problem... Can Not Reach The ASDM

I got a call from a customer that said they could not reach the ASDM when trying to get in and do some management of the firewall.  I got in and looked and noticed nothing really unusual.  HTTP server was enabled and had and IP range on the inside of the network that was allowed to access it via HTTP.  However, what I did see was that the image on disk0: was not the same name as the configured image name:
ASA5520# show disk0:
--#--  --length--  -----date/time------  path
   80  18927088    Jun 07 2012 03:20:34  asdm-649.bin
   10  4096        Jul 16 2011 03:15:52  crypto_archive
   81  15261696    Aug 01 2011 06:48:32  asa824-k8.bin
   83  4096        Sep 10 2011 03:52:16  tmp

Whereas the configuration stated the following:

asdm image disk0:/asdm-642.bin

Ah, the difference on one number of the version made the difference.  Once I configured the correct version (649), all started working as the customer expected.

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