Getting PP2P to work over DSL

We have a PPTP and Cisco client VPN on our router, and several users successfully use both services. But one user, who is set up on DSL, has PPTP connections that work for only a few minutes after. Then the link quits and shuts down his DSL connection. When he tries his Cisco client 3.5.2 rel k9 it fails, citing no valid response from the server.

It seems to be a matter of setting PPTP connection timeout parameters on either the client or the server. Support.Microsoft.com provides information for adjusting Windows NT server settings. Others have reported success by adding the following two registry entries to the client PC:HKEY_LOCAL_MACHINE\System\CurrentConfiguration\Services\RASPPTPE\Parameters\Configuration\EchoReplyTimeoutSeconds REG_DWORD 0x168 HKEY_LOCAL_MACHINE\System\CurrentConfiguration\Services\RASPPTPE\Parameters\Configuration\InactivityIdleSeconds REG_DWORD 0x168 EchoReplyTimeoutSeconds controls the time the client waits for a reply to a keep-alive packet. InactivityIdleSeconds controls the time the client waits before sending a keep-alive packet.

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