create rule from server computer set to external.
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Can ping internet traffic behind ISA 2006 but cannot browse web pages
I've viewed a bunch of existing posts on ISA issues, but haven't been able to find a resolution to my problem.
Here's the setup:
I have an isolation environment setup with a CISCO ASA 5500 connecting our LAN/WAN to a web publishing environment via a DMZ setup.
Web sites are published via MS ISA 2006, that is connected to its own gateway.
The web sites publish fine, but the servers hosting the web data also need to be able to both browse the web and access ftp sites.
Separate from the site publishing rule, I have added a rule to allow http, https, ftp, ftps, etc. from all internal to external, but that didn't seem to work.
I then created a rule to allow all outbound traffic from internal to external.
I can now ping, the local DNS is getting out (nslookup works), and even tracert, but when I open a web browser, all connections time out.
All servers in the environment have the ASA as their default gateway, and the ASA is redirecting any 0.0.0.0 traffic to ISA.
Looking at logging on ISA, it looks like it's passing the traffic through as it shows it's initiated the connections, but in the results code, it shows 0x0 ERROR_SUCCESS
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Answers
The ISA has 6 NICs on it (not all in use).
One thing I did do is test by having a machine use ISA as it's default gateway, which made internet and ftp work. It seems that ISA doesn't like the requests when they are being routed by the ASA.
Instead of using the ASA as the gateway (it's currently routing all internal traffic to our internal network, or re-routing all else to ISA), should I have ISA handle everything and setup a separate network in ISA for the ASA to route internal traffic that way?
I know it says it's routing the traffic, but the machines attempting to access the internet get no where.
Here's a better description of the network:
We have 2 banded T1s connected into a single router that is being used for the web publishing, and a second banded T that's connected into a separate router (used for our WAN). The first, is connected into the ISA server for the web publishing and that part of the environment, and we have an ASA inbetween that's routing connectivity between the two environments.
I was going to have ISA push traffic destined for our internal 10.x.x.x network to the ASA, but I wasn't able to find any resources that supported that idea.
Install MS ISA client may solve the problem, at least it can help to detemine the problem.
http://www.microsoft.com/D
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by: Kumar_Jayant123Posted on 2009-10-02 at 13:56:12ID: 25482115
Hi,
Looking at the Log it seems that the ISA Server is passing the traffic.
Client: 192.168.7.110
Destination; 74.125.95.103
Port: 80
Protocol: HTTP
Status: Initiated Connection
Rule Name: Internet for all
Code: 0x0ERROR_SUCCESS
This suggests that the ISA Server is passing the traffic.
Try to create a Rule to allow Localhost to External and see if you can access Internet.
Once you can access the internet on the ISA try and check what happens if you point the ISA as a Proxy of the Web Server.
BTW: How many NIC you have on the ISA Server?
Kumar