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AT&T Global dialer with ISA2004 can't connect

BBrayton asked
Medium Priority
Last Modified: 2012-05-06
A client is switching from dialup to IP based AT&T Global connection for a medical application.
We have SBS2003R2 with ISA2004 - all set up pretty plain vanilla.  2 Nic's on LAN and the WAN connected to a LinkSys RV042 router to DSL.  

When previously we were using a modem, we always disabled the ISA on the client and the dialer worked fine.  Now with the TCP/IP based we need to have the ISA client on to access the internet but it won't connect to the AT&T network.

Anyone been down this road before ??  Are there special ports for AT&T to open ?

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Press2EscSystems Integrator
Is the ISP router/modem or Linksys providing PPPoE?  Is the router/modem  using NAT?

Do the IP addrs on the (connected?) WAN side of the Linksys looks good?  Are you able to get a (auto DHCP) laptop/desktop online when connecting directly behind the ISP supplied router/modem or the Linksys?

Any static ip(s) being provided by the ISP?  

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The Router does PPPoE and the Router has Nat only for external wan side users not participating in the domain.

We have 2 nics in the server so all users are lan side and are not getting IP or anything else from the router.

All other internet connections are fine, any sites.  Just the AT&T Global dialer which tends to be very propritary !!

Press2EscSystems Integrator
So you can access any sites via any LAN compuiter to any url on the internet?? Your only issue is the dialer keeps popping up??
regualar web access is fine for all users.
A medical application that they run requires them to use the AT&T Global VPN iinterface to connect a single users application and transmit medical data to the state.  The AT&T will connect via it's private VPN but fails when it then trys to connect to its proprietary web site.  Gets a 10060 timeout.


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