1. Website cannot be accessed from internal workstations. - ISA Configuration
2. Cannot access a website through ISA 2004
3. Cannot access particular website
4. Cannot access internal website - 502 proxy error
Dear All, Our users use default SecureNat (client's default gateway point to Internal NIC of ISA 2k4) and I config proxy on their IE. The problem occurs after they have proxy, they cannot access internal website anymore ! If i uncheck web proxy then they can.I tried configure Direct Access by adding URL, IP of internal wesite in ISA server\Configuration\Network\Internal\Web browser but still have the problem. I also try to unbind the Web Proxy application filter from the Hypertext Transfer Protocol (HTTP) but still the problem. The error message is Technical Information (for support personnel) a.. Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). (12202) b.. IP Address: x.x.x.x c.. Date: 2/13/2006 10:22:38 AM d.. Server: aaa.xyz.com e.. Source: proxy Please help. Thanks very much.
5. Cannot access website on port 81
6. Cannot access website via ISA 2004
We use ISA 2004 Standard edition with the latest service pack. Its running as a web proxy only and has only one nic, which is fine for what we need. The problem is we sometimes have issues where we cannot access certain websites via the proxy which can be accessed fine when we bypass the proxy. We have one specific website which we cannot access via the proxy but works fine when bypass the proxy. I have checked the ISA logs, and they read the following error status codes: 12209 The ISA Server requires authorization to fulfill the request. Access to the web proxy service is denied. 5 Access is denied. I have checked all the rules, DNS settings and also in IT use http1.1 with proxy is checked. I have tried to disabling all the application filters and increasing the connection time outs but still no luck. Is there anything else I can try. What other methods can I use to troubleshoot this proxy error as we need to access this web site.
7. Cannot access website internally - ISA Server
8. Cannot access websites after setting up schedule download
I had about 5 websites set up for scheduled download in ISA 2004 standard SP1, along with a large cache of 2GB. This has worked fine for several months. Last week two of the websites became unresponsive, timing out on IE on any workstation behind the ISA server. The rest of the scheduled website URLs still work. The website URLs work when I try them on a workstation directly connected to the internet, bypassing ISA server, so I concluded the problem was in ISA. I removed the sites from the download schedule, still failed with a timeout. Then I disabled caching, still failed. I deleted the ISA cache, still failed. (I restarted ISA Server after each attempt.) Then I added a cache rule to explicitly not cache those two URLs. Still times out from behind the firewall. I can ping the site addresses, so DNS is okay. The host OS for ISA Server is WIndows 2003 Standard, SP1 not installed but all other updates current. Server has been rebooted, no affect on the problem. So I have to assume it's related to ISA caching, but I'm not sure what else to try. My working premise was that something in the ISA 2004 caching was corrupted, but after deleting the cache and all scheduled downloads I don't know where else to look. There are no access rules specific to those websites or IP numbers. I wasn't able to locate anything on corrupted cache in Technet. Any suggestions? Jack Peacock