ISA 2006 deniesconnections to outside database
Posted on 2007-11-20
Hi, I have an ISA 2006 Enterprise server installed on windows 2003 Ent SP2. Its connected to two interfaces, one representing the internal network and the other the external network.
I have one rule on right now allowing all outbound traffic from the internal network and localhost to go to the external network for all users.
I am trying to connect to a remote oracle database. The connectivity is there most of the time but its unstable, meaning that clients in the internal networks are denied access. I test the reliability of the connection using TNSPING80.EXE (An oracle utility used to test database connectivity).
I am able to run the command from any client on the network. In less than a minute I re-ran the same command about 80 times at which point the ISA blocks all and any consecutive attempt by any client in the network. It will keep denying me and everyone else on the network for about the next 10 minutes.
The funny thing is that the ISA server itself can connect to that database. I have installed the oracle client on the ISA server and i was able to TNSPING out as many times I want.
I tried to play around with the ISA configuration but there isnt much to configure. I am hoping someone has seen a similar behaviour before and can help in resolving the issue.