====== Cisco - Firewall - Cisco ASA 5505 - Error – ASDM Interface Giving 404 HTTP Error ======

If you're getting this host error from the browser:

<code>
HTTP: processing GET URL '/admin/public/index.html'
</code>

----

===== Fix =====

First run: **show flash**

You should see the asdm image there.

If you don't, you'll need to use tftp and grab the image from another ASA or from Cisco if you have a service contract.  Make sure it works with the compatibility matrix: http://www.cisco.com/en/US/docs/security/asa/compatibility/asamatrx.html 

Enable mode: **en**

Configure terminal: **config t**

Make sure the current configuration makes sense: **show run http** (This is an access list)

Enable the server: **http server enable**

Designate the ASDM image file: **asdm image [location of asdm image file]**

Write to memory: **wr m**

Reload: **reload**

If that doesn't work the following might help: **ssl encryption aes256-sha1 aes128-sha1 3des-sha1**