Date: Thu, 10 Oct 2002 12:14:16 -0700 (PDT) From: Archie Cobbs <archie@dellroad.org> To: Mikael Hybsch <micke@dynas.se> Cc: freebsd-net@FreeBSD.org Subject: Re: Problem with mpd / pptp link between FreeBSD and win98 Message-ID: <200210101914.g9AJEGFn013110@arch20m.dellroad.org> In-Reply-To: <Pine.GSO.4.30.0210082040380.23837-100000@spirit.dynas.se> "from Mikael Hybsch at Oct 8, 2002 10:12:12 pm"
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Mikael Hybsch writes: > I'm trying to run a pptp link to secure the wireless traffic between > my FreeBSD server/firewall and a win98 machine. I'm using 2 D-Link 520. > The D-Link in the FreeBSD server is running in Host-AP mode. > The wireless link itself works fine. > > The problem is that whenever I download a file to the win98 machine the > pptp connection randomly freezes after a few megabytes and I get the > message below in /var/log/messages. The number is always around 4000. > After this I have to reconnect to continue. > I have tried 40 and 128 bit encryption with the same result. > > Oct 7 21:30:56 snaps /kernel: ng_mppc_decompress: insane jump 4083 > > Does someone have any idea about this? > > === > > I just had a quick look at the code and some more debugging shows > that the new sequence number is less than the current. Does this mean that > mppc got fed an old packet? > > /kernel: ng_mppc_decompress: insane jump 4089: (1690-1697) & 0xfff Yes. PPP relies on packets not being re-ordered, and the PPTP/GRE implementation assures this. So something is broken somewhere, either in FreeBSD or the Windows machine. Try updating your Win98 with the latest MSDUN1.2 update or whatever. > On a related issue, there is a new l2tp netgraph module. Is there any > work in progress to, for example, extend mpd to be able to act as a l2tp > server? I'm planning to do this eventually but not soon. Anyone else of course is free to start hacking on mpd, ppp(8), etc. as well. -Archie __________________________________________________________________________ Archie Cobbs * Packet Design * http://www.packetdesign.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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