From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Juli=E1n_Mu=F1oz?= Date: Fri, 07 Jun 2002 18:11:32 +0000 Subject: Re: [LARTC] Stranger than IPTABLES? Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org Mldonkey open many connections, so individually they are very slow. Maybe the TCP timeout is at the maximum (2minutes), so it can take several minutes to close a connection (maybe 5minutes). On Fri, 7 Jun 2002, Martin Devera wrote: > Wow. It is very interesting. Did you tried to read counters > in iptables -vL and compare counts ? Like to read value from > /proc/net/dev compare to count of packets at INPUT chain and > then compare with no of packets in DROP chains. > It could give us better picture where are the packets going to. > > But it seems there is problem with too many connections. The dropping > may work but remote sites will still try to resend the packets and > because you have high number of connections there SYNs and duplicates > will go at least several minutes. > > devik > > > > > and same ones for port 4661. > > What is happening? > > It looks like Linux is trying to drop these packets, but they are braki= ng down VERY slowly. It seems like linux is unable to handle that and there= are still many packets out of iptables control. > > Look at this: > > here you can see 'netstat -n' output written after (about half of minut= e) appending iptables DROP rules: > > > > http://josh876.republika.pl/netstat-dropped.txt > > > > modem's LED is blinkink randomly from time to time but and it is slowin= g. But MLDonkey is still reporting downloading. > > > > ..and this is after few minutes > > > > http://josh876.republika.pl/netstat-dropped-few-minutes.txt > > > > MLDonkey is generally not reporting downloading, but it is still happen= ing that it will show download for a very short while. > > > > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > > --=20 __o _ \<_ (_)/(_) Saludos de Juli=E1n EA4ACL -.- Foro Wireless Madrid http://opennetworks.rg3.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/