Date: Tue, 20 Jul 1999 02:01:35 +0100 From: Brian Somers <brian@Awfulhak.org> To: Christoph Sold <cs@cheasy.de> Cc: Brian Somers <brian@Awfulhak.org>, Questions@FreeBSD.ORG Subject: Re: PPP RecvEchoReply -- how to keep them off my line? Message-ID: <199907200101.CAA64954@dev.lan.awfulhak.org> In-Reply-To: Your message of "Fri, 16 Jul 1999 00:30:14 %2B0200." <14222.23490.942879.3347@kiste.cheasy.de>
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> Brian, > = > thanks fro the fast response. > = > Brian Somers writes: > > > Hi Folks, > > > = > > > apologies for asking a FAQ, but I could not find it in the > > > (3.1-R) Handbook solved. > > > = > > > Looking through /var/log/ppp.log while dialed into one of my > > > ISPs, every 10 seconds a packet crawls through the line: > > > ---<snip>--- > > > Jul 14 23:20:27 kiste ppp[1967]: tun0: LCP: deflink: RecvEchoReque= st(34) state =3D Opened = > > > Jul 14 23:20:27 kiste ppp[1967]: tun0: LCP: deflink: SendEchoReply= (34) state =3D Opened = > > > Jul 14 23:20:37 kiste ppp[1967]: tun0: LCP: deflink: RecvEchoReque= st(35) state =3D Opened = > > > Jul 14 23:20:37 kiste ppp[1967]: tun0: LCP: deflink: SendEchoReply= (35) state =3D Opened = > > > ---<snip>--- > > > = > > > Annoyingly, this keeps the connection from timing out. Is this a > > > ppp feature I can deny? > > = > > You can't deny it - sending the reply is mandatory (well, nearly - = > > from memory, ppp *MAY* decide not to send the packet, but if it gets= = > > a repeat REQ, it *MUST* reply). > = > Too bad. I realize this happens on ppp level, where IP filtering is > not able to kill the beast. > = > > This should *not* refresh the idle timer though. Does ``show b'' sa= y = > > otherwise (with ``set log +hdlc lcp phase'' showing if traffic is = > > arriving) ? > = > Ummm, I=B4m out of my depth here: looking at /var/log/ppp.log, some dat= a = > scrolls by. After that, the idle timer gets reset. I included the data = > for your reference. > = > Maybe there is other data hidden in there as well -- I cannot > say. > = > Thanks for your fast response > -Christoph Sold > = > P.S: I leave town for the weekend, so if I should look for anything els= e, > please be patient -- I=B4ll be back Tuesday evening. [.....] Oops. I should have included tcp/ip logging in my suggestion... As I = don't see any LCP messages about ECHO REQ/Response packets, I can = only assume that all that data was IP traffic (and hence resets the = timer). The tcp/ip logging should show this - maybe you need to = filter some of it.... -- = Brian <brian@Awfulhak.org> <brian@FreeBSD.org> <http://www.Awfulhak.org> <brian@OpenBSD.org> Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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