Yes . That did it. I am able to copy files using scp. Why does an MTU issue come up in this scenario ? Thanks Shobha -----Original Message----- From: Paul Wouters [mailto:paul@xxxxxxxxxxxxx] Sent: Wednesday, November 15, 2006 1:25 PM To: Ranganathan, Shobha Cc: fedora-xen@xxxxxxxxxx Subject: Re: scp in FC6 + Xen gets stuck in "stalled" stage On Wed, 15 Nov 2006, Ranganathan, Shobha wrote: > I am trying to get scp to work. It gets stuck displaying "stalled" > message. > This happens in the Xen that I built with xen-3.0.3-rc3 which builds it > with 2.6.16.29 kernel in Fedora Core 6. > I boot into Fedora provided FC6 Xen host and tried scp and it works. Looks more like an MTU isuse. Try using clamping: iptables -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu Otherwise, try pinging with different size packets until it fails, and then use the last successful packet size (eg 1440) to: iptables -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1440 Paul -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen