Tom's Hardware > Forum > General Networking > General Gateways, Routers and Firewalls > DMZ and Ping issue when changing ip address for a server

DMZ and Ping issue when changing ip address for a server

Forum General Networking : General Gateways, Routers and Firewalls - DMZ and Ping issue when changing ip address for a server

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zillah   01-04-2007 at 08:54:43 AM

I have got a media server 2003 installed in DMZ zone (Cisco PIX 525) , with an ip address 192.168.101.204/24, it was able to ping other servers (sql server , help server, etc ) which are in DMZ zone as well. Basically all servers are in DMZ area

Recently this media server is not able to ping these servers (sql server , help server, etc) , I do not why, but if I changed the ip address (last octet only) for this media server to 192.168.101.222 , it would be able to ping other servers (sql server , help server, etc).

There is no firewall on the media server and there is no firewall on the other servers as well.

All servers have got win2003 OS.

The error message for ping is : timed out

This is no entry with our cisco PIX for both IP addresses 192.168.101.204 and 192.168.101.222

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prolfe   01-06-2007 at 08:18:07 PM
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I'm just curious, if you change the IP to *.*.*.222 and it works, why not just leave it there?

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zillah   01-08-2007 at 02:53:52 PM
- 0 +

"arp -d" command solved the issue, thanks guys for this advice

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Zakkas   01-08-2007 at 03:58:49 PM
- 0 +

Glad things worked out, you could have also entered "clear arp" on the PIX to refresh the ARP table.

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zillah   01-08-2007 at 04:05:58 PM
- 0 +

Quote :

entered "clear arp" on the PIX


I would not have been thinking of that , because since the PIX won't do anything with the ICMP traffic on the DMZ local network.
ICMP traffic will go into one port of the switch and out the relevant one to the receiving server, and never reach the PIX.

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