Hi Jim, That's what I thought. But I know 100% for honest to goodly sure that mine is correctly configured, and that the error is generated only from time to time when a remote access VPN client calls in. If it happened all the time, I'd be suspicious. I'm even a good boy and use DHCP for VPN client addressing and use on-subnet addresses so no one gets confused :) For example: Alert Information Description: ISA Server detected routes through adapter "LAN" that do not correlate with the network element to which this adapter belongs. The address ranges in conflict are: 192.168.1.155-192.168.1.155;. Fix the network element and/or the routing table to make these ranges consistent; they should be in both or in neither. If you recently created a remote site network, check if the event recurs. If it does not, you may safely ignore this message. The IP address 192.168.1.155, and is delivered via DHCP The Internal Network Definition is 192.168.1.0-192.168.1.255 There are no remote site networks on this ISA firewall I've seen it at other locations where everything is working handy-dandy, so I figure it spurgeonous, or at least the problem below radar range. Tom www.isaserver.org/shinder Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 MVP -- ISA Firewalls -----Original Message----- From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx] Sent: Wednesday, February 23, 2005 8:39 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISA 2004, VPN, Network behind a network http://www.ISAserver.org The message "ISA Server detected routes" is normally caused by misconfigured subnet definitions (VPN included) at the ISA. If you wanna send your ISAInfo, I can help you sort this out. Trying to describe your ISA configuration without it is like listening to Andy spell the word "a" in a single try. -----Original Message----- From: Paul Crisp [mailto:pcrisp@xxxxxxxxxxxxxxxxx] Sent: Wednesday, February 23, 2005 4:24 PM To: [ISAserver.org Discussion List] Subject: [isalist] ISA 2004, VPN, Network behind a network http://www.ISAserver.org OK, I have been racking my brain about this all night. First of all i have successfully installed ISA 2004 and setup VPN access, both client and site-2-site. The problem i am experiencing is this. As a remote access user myself, i want to be able to VPN into our ISA 2004 server (Not a problem in itself, works fine), but i also want to gain access to two other subnets behind our ISA 2004. I have read all of the articles regarding networks behind networks and i have added the relevant ranges both to the Internal network and i have also created the neccessary subnets and i have added manual persistant routes as well. From the ISA server itself i can ping all subnets without a problem, but as a VPN user i can only ever ping the subnet the ISA itself sits on. 1 - What do i need to do to get this to work, i have been working on home on this for the last 6hrs !! ? Next question is, i keep getting this error ISA Server detected routes through adapter "Intel(R) PRO/100+ Server Adapter (PILA8470B) (Microsoft's Packet Scheduler) " that do not correlate with the network element to which this adapter belongs. The address ranges in conflict are: 192.?.?.255-192.?.?.255;192.?.?.0-192.?.?.255;. Fix the network element and/or the routing table to make these ranges consistent; they should be in both or in neither. If you recently created a remote site network, check if the event recurs. If it does not, you may safely ignore this message. 2 - Again i have tried everything to add the correct address range to the network, but this error persists. I did read an article on the ISAServer.org forum and Tom said this can be ignored if all is working, is that correct Tom ? Third and final question is a slightly strange one. RRAS. I have also upgraded another ISA 2000 server to 2004 and although the RRAS does not contain any interfaces apart from the standard physical and loopback interfaces, the ISA server keeps getting this error Description: The VPN connection attempt by user <computername>\WORCESTER_BILL could not be established. The failure is due to error: 0xc0040021 3 - Although i haven't had this specific error with ISA 2000 before, i have experienced interfaces disapearing and then suddenly appearing in RRAS and Windows 2000, can anyone shed any light ? All help is extremely appreciated and if you require anymore information i will be pleased to pass on Regards Paul Crisp Snr Network Support Analyst Metal Bulletin PLC ------------------------------------------------------------------------ ------------------- This e-mail, together with any attachments, is confidential between the sender and addressee(s). If you are not the intended recipient(s)of this e-mail you should not copy it or use it for any purpose nor disclose its contents to any person: to do so may be unlawful. If you have received this e-mail by mistake please notify the sender immediately by e-mail and delete this e-mail and any attachments from your system. To the maximum extent permitted by law, Metal Bulletin PLC accepts no liability for any loss or damage resulting from unauthorised use of this email or any attachment or from unauthorised use of any information contained or implied in the email or attachments. 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