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braindump
Asked: 2010-08-17 23:34:03 +0800 CST

PPTP-Gateway routes icmp but no http

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got a very strange behaviour with a Gentoo-based PPTP-Gateway here. I configured the VPN and the default routes - from the Gateway itself, the connections out to the VPN work great. But from the Clients, connected to the Router, I just can do pings into this VPN. No HTTP-Traffic, no FTP etc.

iptables is not used and flushed, so I don't think, that's the point of failure.

Does anyone have some hints to look for?

(Edited the title for a better understanding)

vpn router pptp gentoo

1 Answers

  1. Okay, it's been the MTU. a

    iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu

    did it. Thanks to everyone.

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