Which version of SBS 2003, plain or SP1?? If SP1, what version of ISA. Best place however might be the yahoo SBS list however. S -----Original Message----- From: Glenn [mailto:glenn.johnston@xxxxxxxxxxx] Sent: Wednesday, February 08, 2006 7:11 PM To: ISA Mailing List Subject: [isalist] ISA Server hangs when 6th VPN client connects http://www.ISAserver.org Hi, Been called in to do some consulting for a company with an issue with external clients using L2TP to connect the the SBS 2003 premium server. Company has no tech guy of their own, the SBS server was set up by the company they bought the server off and has been installed for about 12 months and according to my contact at the company, has been working fine until early last week. I know the company they bought the server of, and generally their work is spot on, so I have no reason to suspect a dodgy install. However, while tampering after the install is a distinct possibilty by employes, I have the feeling that that they take the approach "If it's not broken, don't touch it", so I don't think this is likely. From what was I told only 2 people have the administrator password. They say no one has touched it except for the weekly backup, and I believe them at this stage any rate. From the 1 1/2 hour look I had yesterday afternoon the install and set up is OK, with no obvious issues. It's dual nic'ed, has a Netgear ADSL modem with firewall sheilding it from the internet, there are correct port forwardings on the ADSL Modem / firewall to allow for e-mail, OWA, DNS publishing, and L2TP inbound to work, with matching rules on the ISA server firewall to match the inbound port forwards. There are no unexpected errors in the event logs on the server, and the Netgear firewall logs are relatively clean, with nothing out of the ordinary. Issue. They have a number of what they call "mobile workers" that come into the office 1 day per week, and spend the other 4 visiting clients, and using L2TP connections to connect back to the office for file sharing, updating time sheets, on there billing application etc, usually this occurs at the end of the day. During the day, they use OWA to access e-mail, which is working fine, they say. Since Tuesday or Wednesday last week, if only 3, 4 or 5 clients are using L2TP, everything is fine. When the 6th connects, the server hangs, and requires a power off reboot. I was sceptical on the description, until I saw this last night, with my own eyes. They rang a few clients and had them connect, up to 5 fine connected clients, no issues, nothing in the event log, everything looked 100% normal. They then asked a 6th to connect, and bang, the server hanged within about 5 seconds, of R&RA showing the client as connected. The SBS licenses are OK, at 30 clients, with 26 employees, the SDSL is a 512/512 pipe. There are 30 L2TP ports defined in R&RA. I've searched technet / online but nothing seems even close to what I am seeing. Anyone have any suggestions on what the problem could be ? ------------------------------------------------------ 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 ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: isalist@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx