I began by configuring a PPTP redirect using the m0n0wall GUI. Everything worked fine and inbound PPTP connections were redirected to the PPTP server behind the firewall. Although, when doing outbound connections to other PPTP servers from within the local subnet, it seems like they are redirected to the local PPTP server somehow, because they never get through.
It was possible to get around this by disabling PPTP redirecting and instead setup a NAT rule that forwards all traffic to port 1723 to the local PPTP server. Unfortunately this introduces a new problem; PPTP connections to the local PPTP server timeout quite fast.
For me it's ok to use any of these methods, I would just want to get rid of either the "outbound PPTP" or the timeout issue.
Happy for any suggestions or solutions.
Aron
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Topic: VPN timeout