Ok..i have a 1841 router with 12.4(19) and we use MS VPN client to connect to one of our clients. If i use from home, it works fine and a couple other sites it works fine, but at the office behind our 1841 router it doesn't. Talked to the clients firewall service providers and they said it uses GRE over IP sec? not sure if i need to open pptp or something to allow return packets through.. What info can i give you guys that will help you help me? It contacts the site, gets to verifying user/pwd and then fails
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