VPN Verifying Username and Password Stalls

Archived from groups: comp.dcom.vpn (More info?)

MS 2003 Server VPN, Linksys firewall pass-through.

-Works normally for unspecified period.
-If user is dropped then when they try to reconnect they cannot.
-If they change their IP address they can connect
-After a period of time they can reconnect with their old IP address

When the user was unable to connect we did a sniffer trace and found that it
does:
Start-Control-Connection-Request
Start-Control-Connection-Reply
Outgoing-Call-Request
Outgoing-Call-Reply
Set-Link-Info
client-->server PPP LCP Configuration Request then just goes over and over
while the user has the Verifying Username and Password box. It then never
connects.

Any ideas appreciated.