I use an Ubuntu server as a work-horse for my calculations and connect from my desktop-pc with ssh to the server. For some applications (gnuplot =) this is really slow altough it’s over LAN. I found on the internet some instructions to improve this situation: instead of the AES cipher the arcfour and blowfish ciphers perform much better and switching on compression also doesn’t hurt. Therefore one should use
ssh -c arcfour,blowfish-cbc -XC host.com
to connect to with ssh. And guess what? This really improves the situation, especially for gnuplot. Thanks Samat!

July 16, 2007 at 20:33
That’s a useful tip. Thanks!
July 26, 2007 at 14:50
This is much faster as you say. Very nice. Thanks for writing about it.
August 2, 2008 at 22:39
Really useful tip. It speeds up 100 times!
July 16, 2009 at 01:33
it works great!!!
August 7, 2009 at 09:46
Amazing, thanks for the tip!
September 13, 2009 at 15:16
This does indeed speed up X11 forwarding, even when tunneling over the internet!
September 18, 2009 at 20:36
This tip made a huge difference. Now I can use the vmware server console on my mac. Without this it was unusably slow.
July 26, 2010 at 10:40
Indeed, it speeds up X-11 forwarding over my 4Mbit internet connection. Now my remote apps are actually usable!
October 29, 2010 at 04:37
thanks for the info dude.
July 10, 2011 at 17:47
Now my SSH X11 forwarding is really usable!. Thank you for the tip.
October 8, 2012 at 22:24
Incredibly useful! Thanks very much. That sped up my X11 connections to a server upstairs from painful to quite usable, even over our 100-Mbit LAN.
January 4, 2013 at 01:59
Thank you
I was having performance issues with X forwarding using a Vagrant VM, and this fixed it nicely.
March 5, 2013 at 19:01
This is such a time-saver. Will you marry me?
)))