On 11/09/2007, Les <hlhowell@xxxxxxxxxxx> wrote: > I had the same problem on FC6. I asked lots of questions got lots of > advice leading to iptables in the firewall being part of the problem. > Finally I turned off the firewall, and things worked ok. I am now > slowly going through the iptables and playing with combinations, to see > what in there is mucking up the transfers. But it seems related to > several things affecting different bits of the process. > I can't isolate it well yet. > > If you have a separate firewall isolating you from the net threats as I > do, then you can pretty safely turn off the machines firewall and see if > it helps. > I have had probelms with scp of large files between two boxes each behind a firewall - the scp would stalll after a few kb (the machine wouldn't crash though). Turns out that one of the firewalls was somehow causing many packets to be out of the TCP window. doing an echo 1 > /proc/sys/netfilter/nf_conntrack_tcp_be_liberal fixed that for me. To make it persistent accross rebotts you need to add this line to /etc/sysctl.conf net.netfilter.nf_conntrack_tcp_be_liberal = 1 Another thing you might want to turn off is tcp window scaling - read about that here: http://lwn.net/Articles/92727/ However, I would not have expected any of these things to cause a box to hang. > Regards, > Les H > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list >
