ASA5505:Manage your ASA with ASDM

I got a friend who asked me if I have enabled http service or not, I replied yes, he told me that he could access the page but the page showed page cannot be displayed..I did not take much heed on his request because the object was achieved.

The problem was because there’s two asdm image in the flash, the image loaded in the configuration was different from the version he installed.

asa-2(config)# sh flash
Initializing disk0: cache, please wait........Done.
-#- --length-- -----date/time------ path
 11 8515584    Sep 27 2008 06:34:22 asa724-k8.bin
 12 4181246    Sep 27 2008 06:35:38 securedesktop-asa-3.2.1.103-k9.pkg
 13 398305     Sep 27 2008 06:36:10 sslclient-win-1.1.0.154.pkg
 14 6514852 Sep 27 2008 06:38:26 asdm-524.bin
 17 0          Sep 27 2008 06:42:32 crypto_archive
 18 16275456   Apr 21 2011 10:01:24 asa821-k8.bin
 19 0          Apr 21 2011 09:44:14 log
 49 11348300 Apr 21 2011 10:04:08 asdm-621.bin
 50 0          May 01 2011 04:13:16 coredumpinfo
 51 43         Jun 26 2011 04:43:12 coredumpinfo/coredump.cfg

Before you start to question if http is enabled or not first troubleshoot by issuing this command, it is obvious that https service was enabled otherwise he would not even see a certificate message.

asa-2(config)# sh run asdm
asdm image disk0:/asdm-621.bin
no asdm history enable

If you do not see any entry for asdm image it means there’s no image loaded in the configuration, your asdm launcher will not be abled to launch the asdm.

To load asdm into image:

asa-2(config)# asdm image flash:/asdm-621.bin

To enable http service and specify which host can access:

asa-2(config)# http server enable
asa-2(config)# http 192.168.100.0 255.255.255.0 inside