Hi Greg, It sounds like the ISA firewall is a VPN client to a VPN server at the ISP. The public address the ISA firewall uses is assigned to the VPN connection. So, you created a DUN connectoid and then used this DUN connectoid to create the dial-up entry in the ISA Management console. The DUN connectoid dials up automatically when a LAT host makes an outbound request. Right? Is is this link that goes up and down? I wonder if it could be an MTU issue? Also, I recall SP1 having an effect on this type of setup, although I don't recall what the issue was because I've never personally been abused with this type of link :) HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Greg Wright [mailto:greg@xxxxxxxxxxxx] Sent: Thursday, June 12, 2003 7:56 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: RES: RE: ISA Server and Outbound VPN http://www.ISAserver.org Just to clarify the totality of the situation for others: They have a wireless (ethernet) connection via private IP range to the ISP. The ISP terminates VPN (and PPPoE) tunnels at a gateway. The customer will make a VPN connection to the gateway VPN server at the ISP and be provided with an external (internet) address. This dialup process is managed by ISA Server. This operates fine while RRAS is down. RRAS has 2 outgoing VPN configurations that create a private tunnel between this office and 2 other sites across the world. One, I understand, is a central office. All sites use ISA Server, and most sites have the capability to terminate incoming VPN's. The cetral office at least, accepts incoming connections. So, while I don't know much of the VPN Gateways that your discussing, since I have focussed on the RRAS/VPN Dialup conflict at this point, it does now sound like the configuration situation applies to them. If I cant resolve the PPPoE installation, I will have to learn about VPN Gateways, and I expect I will be reading your site a whole bunch more than I already do now Tom! Thanks again, Greg -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Friday, 13 June 2003 1:18 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: RES: RE: ISA Server and Outbound VPN http://www.ISAserver.org Hi Tiago, I don't think his situation is the same as yours. You were creating (or trying to create) a demand dial interface to create a VPN gateway to gateway link to join office networks over the Internet. You need to make one side active (the 'calling' side) and one side passive (the 'call recipient' side). The interface name must the same as the credentials presented by the remote router because this is how RRAS determines that it should handle the call as a VPN gateway connection, rather than a VPN client connection! If the credentials do not match the name of the interface answering the call, then the connection attempt is treated as a simple VPN client call. The static router is required so that the demand dial interface is used to route packets to the remote network. Also, make sure that all networks that are joined by the VPN gateways are on the LAT, or else the Firewall client will try to send packets to the remote network to the Internet! That wouldn't work very well :) Actually, all these cool secrets and non-secrets are in my VPN gateway to gateway articles over at www.isaserver.org/shinder Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Tiago de Aviz [mailto:Tiago@xxxxxxxxxxxxxxx] Sent: Thursday, June 12, 2003 8:29 AM To: [ISAserver.org Discussion List] Subject: [isalist] RES: RE: ISA Server and Outbound VPN http://www.ISAserver.org Hey Tom, Remember that I had the same problem? -In RRAS, you have to set only one of the VPN interfaces as persistent, and other as demand-dial. -The VPN interface must have the same name that the user being used to connect to the remote server -In the static routes in RRAS, the option "use this route to initiate demand-dial connections" on the route that reaches the remote network can only be marked on the same side that has persistent connection marked. This took care of the problem here. Tiago de Aviz IT Consultant MCP-CNA-AIX-CCNA-CCDA -------------------------------- www.softsell.com.br tiago@xxxxxxxxxxxxxxx -------------------------------- -----Mensagem original----- De: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Enviada em: quinta-feira, 12 de junho de 2003 00:07 Para: [ISAserver.org Discussion List] Assunto: [isalist] RE: ISA Server and Outbound VPN http://www.ISAserver.org Hi Greg, Is the ISA firewall creating a VPN client connection to the ISP? Or are you just passing PPTP through the ISA firewall? Thanks! Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Greg Wright [mailto:greg@xxxxxxxxxxxx] Sent: Wednesday, June 11, 2003 9:40 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISA Server and Outbound VPN http://www.ISAserver.org Hi Tom, Its my wireless network (well, I run the thing anyway) and I was at the site checking the radio quality. Sub 10ms pings for 25 minutes yesterday. The lower layers are fine. While the ping was running, the vpn connection was reconnecting constantly, which indicated to me that it was a VPN/ISA related problem. I also tested VPN connections from my laptop over the same connection with no issue. The VPN Server (as the ISP we hand off to) has not reported problems with their end so I have to presume at this point its client side. Thanks for the other idea's, I can and will try these. If these fail, im going ot PPPoE! Regards, Greg -----Original Message----- From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx] Sent: Thursday, 12 June 2003 12:16 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISA Server and Outbound VPN http://www.ISAserver.org Hi Greg, First suspect is always layer 1: routers, cables, ISPs issues -- too many people, including me, have VPN links stay up for hours or days without problems. So, as long as your server is up to date, I have to put ISA firewall related problems low on the list. Try using L2TP/IPSec -- there are rumors, and nothing more than rumors, that there's an issue with the control channel getting "stale", for want of a better term. I don't know if it's a TCP protocol issue, or something in the PPTP control command set. But sometimes changing to L2TP helps. Try switching from your high dollar Intel card with custom Intel drivers to a cheapo Realtek or Linksys that has built in Win2k drivers. A number of people have suggested that this has helped them too. Make sure that there are no Remote Access Policies involved that direct the servers or clients to drop the connection after "x" minutes of inactivity. Run a NetMon trace and catch the packets and see if anything interesting happens right before the disconnect. Since the disconnect happens so frequently, you won't have to wait long to get multiple examples. HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Greg Wright [mailto:greg@xxxxxxxxxxxx] Sent: Wednesday, June 11, 2003 9:09 PM To: [ISAserver.org Discussion List] Subject: [isalist] ISA Server and Outbound VPN http://www.ISAserver.org Hi all, I havent been able to keep an eye on the mailing list for quite some time, and I know that in the past there has been some ISA VPN related posts. The reason I am posting this, is I have a customer that has a highly configured ISA system, with configuration for an outbounf VPN connection to their ISP for internet access, and then a couple more oubound vpn's connecting the office to a central office in the US. The internet VPN connection is constantly dropping and redialling its connection. While I was onsite, the VPN never stayed up longer than 5 minutes. Has anyone got any clues, recommendations or suggestions about issues relating to VPN calls, ISA quirks etc? I expect it will be just a matter of troubleshooting it, but I wondered if anyone could give me a heads up before I get onsite. Thanks, Greg ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: greg@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tiago@xxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: 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