ANNOUNCE: PPTP Masquerade kernel patch

ANNOUNCE: PPTP Masquerade kernel patch

Post by John D. Hard » Tue, 18 Nov 1997 04:00:00

Sorry I haven't announced this here yet - I've been busy mostly on the
Masquerade mailing list...

I have written a kernel patch for 2.0.30+ that enables masquerading a M$
PPTP client.

Anyone interested in doing this should take a look at


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1. PPTP/GRE masquerading in kernel 2.4.18 changed (since kernel 2.4.10)?

For my SuSE Linux 7.3 machine (kernel 2.4.10) it was necessary to use some
extra iptables commands to enable access to a VPN server in the internet
from a PC behind the linux firewall (masquerading), because the GRE packages
(protocol 47) were not returning to the PC.

With the new SuSE Linux 8.0 (kernel 2.4.18) I realized, that this is not
necessary any more; the masquerading seems to be able to do this VPN
passthrough without any further configuration.

Does anybody know about this change? Was the kernel or iptables changed for
enabling this? I didnt find any comment regarding this topic.

Best regards,

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