Raptor 6.5 Linksys DSL Router w/Exchange

[rcaluori]

Hello,
I have a facility using DSL over a Linksys router, the tunnel to our Raptor 6.5 is working fine but Outlook is not finding the Exchange server. Has anyone had any experience with this problem? Thanks in advance for your help.

 

[billhome]

I would start to troubleshoot by answering the following questions. Can you ping the exchange server through the tunnel? Is the default gateway of the exchange server the firewall? Routing in place? Are you going through the proxies for the tunnel? What services did you allow in the rule if you are going through the proxies?

 

[rcaluori]

Bill - No can't ping the exchange server, can ping the default gateway,same as the firewall. Tried both with proxies, all services allowed and without proxies and got same results. Users are RaptorMobile clients running Windows 98. Pretty certain the problem is with the Linksys, users connect to Exchange just fine over a regular dial up connection. I'm willing to use another router if someone can recommend one that works with RaptorMobile and DSL.

 

[billhome]

There are a few possibilities. First of all what does the firewall log say when RM clients try to connect. You say that the exchange server can ping the FW. Can the FW ping the exchange server? How are your address transforms set up? If you are using the gateway's address then that may ensure packets get back to the firewall after going to the exchange server. Try a tcpdump and see what is happening with the packets. Run from inside interface to exchange server and attempt to connect. Are the packets going to an back from exchange? It is probably not the router. BTW the router is inside the fw right. So it should be RM_client---->FW----->linksys----->exchange? A tcpdump will give the the real information to analyze packet transmision. That and the logfiles on the FW.

 

[rcaluori]

Thanks again for replying Bill. No the Linksys is at the remote site running the DSL PPOE for the RaptorMobile Clients. The Raptor firewall is local to the Exchange server. Using RaptorMobile -->Linksys/DSL Router -->Internet-->Raptor-->Exchange. Retesting connections to get Raptor logs. MobileRaptor log gives this --Oct 4 16:25:43.330 donahue kernel: 343 Packet Warning: Packet (192.168.1.100->x.y.z.4: Protocol=TCP[FIN ACK] Port 1069->110) from proxy dropped because it should have gone into a tunnel but did not. This may be because the address transforms done by the proxy caused it to no longer match the tunnel. This is probably a configuration error The x.y.z.4 IP is our internal AIX box.

 

[Guest_imported]

Check your routes on the Raptor machine that throws this error. I've had the same error, only to find that my firewall had dropped a static route to my internal network, and was instead trying to pass internal traffic down the default route, out to the Internet. (oops!)

 

[rlee1]

Doesn't Outlook need to be able to resolve the Exchange server name? Check your DNS routes on the Outlook client IP props