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Routing issue with asa 5505?

I ran into a issue at a customer site that has me scratching my head. The setup is as follows

 

ASA 5505

0/0 set for internet access (Outside)

0/1 set for internal (inside)

0/3 set for Wifi Controller

 

Everything works as designed with no issues. We were decommissioning some old 2003 servers... When I shutdown a particular 2003 server the internet shuts down for the business. Bring the server back up and everything flows normally.

 

There is no ICS internet sharing through that server.. there are no certificates, no custom routes and no custom rules for that server besides an object in the ASA. 

 

Any direction that you could point me in to see why just this particular server stops the ASA from external communication?

 

5 REPLIES 5
VIP Mentor

Re: Routing issue with asa 5505?

Hello

What the default nex-hop from the ASA, Is the server providing any routing, proxy etc.. 



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future

Re: Routing issue with asa 5505?

ASA 0/0 direct to ispASA 0/1 direct to port 24 on switchASA 0/3 Cisco WAP controler.
The server plugs into port 3 on the same switch.
VIP Mentor

Re: Routing issue with asa 5505?

Hello

Can you post the config of the asa please?



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future
Beginner

Re: Routing issue with asa 5505?

Hello,

 

The server can be for the network:

-a DNS server

-a proxy server

-a dhcp server

-active directory with policy etc. 

 

You must know the ip address of the server and search to see under which config is the object applied on the ASA. (dhcp relay, dns server under dhcp server, proxy server on the hosts config etc)

VIP Mentor

Re: Routing issue with asa 5505?

Another guess: The old server is the DNS-server for the company?

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