Description of problem: The MTU value of 1412 causes traffic over the VPN tunnel to "freeze" at some locations. Version-Release number of selected component (if applicable): vpnc 0.5.3 How reproducible: Works every time at a location where the ISP has a lower MTU setting. Steps to Reproduce: 1. Establish VPN Connection 2. Try any kind of network activity (ssh / http / dns) 3. See connection hang and timeout 4. VPN connection does not get disconnected Fix MTU value (to 1390)... problem is resolved. Ubuntu seems to have this hardcoded in /etc/vpnc/vpnc-script Actual results: data transfer hangs. Expected results: data transfer works. Additional info: From: Giray Devlet <giray.devlet> Reply-to: vpnc list to send bug reports and discussions with developers <vpnc-devel.de> To: Francois Cami <fcami> Cc: vpnc list to send bug reports and discussions with developers <vpnc-devel.de> Subject: Re: [vpnc-devel] ssh freezing Date: Wed, 18 Feb 2009 15:26:29 +0100 Mailer: Evolution 2.24.3 (2.24.3-1.fc10) Sender: vpnc-devel-bounces.de Hi François, Thank you ... Interestingly enough everyone claims not to have changed anything, but the MTU setting indeed solved the issue. On fedora setting MTU from "MTU=1412" to "MTU=1390" in /etc/vpnc/vpnc- script The ubuntu boxes seem to have it in it already ... Best Regards, Giray On Tue, 2009-02-17 at 17:03 +0100, Francois Cami wrote: Giray, > > That looks like a MTU/PMTUD problem. > Are you blocking ICMP type 3 at the problematic site ? > > Cheers > > François > > > 2009/2/17 Giray Devlet <giray.devlet>: > > Hi, > > > > I have an interesting problem ... two seperate Fedora 10 boxes, one with > > Fedora 8, and one > > Ubuntu box. Location 'B' has a Fedora 10 box > > > > All with vpnc 0.5.3 and similiar installations. They all connect to Cisco > > VPN 3000 boxes ... (two seperate boxes > > in two seperate data centers) > > > > The two Fedora boxes in Location A, connect but ssh connections "freeze" > > after a bit of data > > has flown ... (think 'ls'). The rest of the boxes do not have this issue. I > > however am able to login, and > > logout ... or when the ssh is frozen open up login from another terminal via > > ssh. > > > > It also does not seem to be only SSH but any data connection (did a telnet > > on port 80 and then a GET /) > > > > The issue seems very location specific, since I cannot replicate the issue > > anywhere else. > > > > Am open to any suggestion, any way to debug the problem ... > > > > tia > > > > [root@puma ~]# vpnc --version > > vpnc version 0.5.3 > > Copyright (C) 2002-2006 Geoffrey Keating, Maurice Massar, others > > vpnc comes with NO WARRANTY, to the extent permitted by law. > > You may redistribute copies of vpnc under the terms of the GNU General > > Public License. For more information about these matters, see the files > > named COPYING. > > Built without openssl (certificate) support. > > > > Supported DH-Groups: nopfs dh1 dh2 dh5 > > Supported Hash-Methods: md5 sha1 > > Supported Encryptions: null des 3des aes128 aes192 aes256 > > Supported Auth-Methods: psk psk+xauth > > [root@puma ~]# > > > > Best Regards, > > Giray > > _______________________________________________ > > vpnc-devel mailing list > > vpnc-devel.de > > https://lists.unix-ag.uni-kl.de/mailman/listinfo/vpnc-devel > > http://www.unix-ag.uni-kl.de/~massar/vpnc/ > >
Editing /etc/vpnc/vpnc-script has no effect on NetworkManager
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
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