Date: Fri, 1 Jan 2010 19:53:15 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: "Karl J. Runge" <runge@karlrunge.com> Cc: freebsd-questions@freebsd.org Subject: Re: Remote assistance for X Message-ID: <alpine.BSF.2.00.1001011942150.90095@wonkity.com> In-Reply-To: <E1NQqZJ-0005bH-00@haystack.runge.home> References: <E1NQqZJ-0005bH-00@haystack.runge.home>
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On Fri, 1 Jan 2010, Karl J. Runge wrote: >> remotehost="lightning" >> cmd="x11vnc -display :0 -localhost -connect localhost -ncache" >> ssh -t -c blowfish -R 5500:$remotehost:5500 localhost "$cmd" > > I think you mean: > > ssh -t -c blowfish -R 5500:localhost:5500 $remotehost "$cmd" > > right? You want to ssh to $remotehost and have the 5500 traffic go > through ssh to localhost:5500, no? The use of '-R 5500:$remotehost:5500' > implies a unencrypted leg going over the network (which may or may not > be acceptable to you, i.e. inside your LAN, but I'm not sure.) [Having spent some time today fighting my own firewall, I'm reconsidering the use of relative names like "remote".] Ideally, the supportee will start x11vnc and the ssh tunnel on their system and not need to open port 22 on their firewall.. So maybe: ssh -t -c blowfish -N -f -L 5500:$supporterhost:5500 $supporterhost && \ x11vnc -display :0 -localhost -connect localhost -ncache 10 > There are some ways to emulate UltraVNC single click with x11vnc: > > http://www.karlrunge.com/x11vnc/faq.html#faq-singleclick > > and SSL encrypted connections are described at the end of that FAQ. > The ssvnc GUI wrapper (but not the bare ssvncviewer) can establish the > SSL tunnel for you. That looks more elegant. Are the security and speed comparable to ssh? > However, since you have ssh access to the supportee machine, I > suggest using that. The test machine is inside my LAN now, but once it goes out into the wild, it will probably be behind a consumer-grade firewall with very few incoming ports open. -Warren Block * Rapid City, South Dakota USA
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