Unidenified traffic error (return web traffic)
Posted on 2007-10-19
A new web server has been setup @ the main office and a webserver publishing rule has been applied to the ISA. I am able to access the servers website from External, Internal (local subnet), and VPN clients.
The only issues I have are:
Users in the branch office are unable to access the website by name. All other locations work without issue. This would seem like a DNS issue but, I dont believe this to be the case. I am able to ping the server by name from the branch office with no issues. I verified that the internal DNS servers have both A records and reverse lookup records for the webserver. A WINS entry has also been created for the webserver. Other servers can be accessed from the Branch office using port 80 with no issue.
When a connection is attempted from the Branch office to the webserver I receive an unidentified traffic error in the ISA log. The source is the webserver and the destination is the ISA box (return traffic). ISA is the default gateway for all hosts in the Main office.
The main office is connected to the branch office via frame relay using 2 Cisco 1700 series routers. The branch office contains 1 domain controller running DNS and WINS. All workstations in this office point the local Cisco 1700 router as the default gateway. The cisco routers default route points all traffic to the ISA server.
The Internal network is defined in ISA as the whole network range encompassing both networks.
Thanks for any help or ideas you can send my way.