On Mon, Mar 10, 2003 at 11:32:00PM -0600, Ryan Thompson wrote: > > Hi all, > > I have a FreeBSD server behind NAT (on an RFC1918 address). The NAT > machine is actually an NT box on a network we don't have access to. > (So, it is not possible, for instance, to set up port based NAT for > inbound SSH, which is one of two things I'd normally do). The server > can, however, initiate arbitrary outbound connections. > > So, I'm fishing for a tech workaround to this management problem. :-) > > I need to be able to have an interactive SSH session on the server > (Server) from another host (Manager) on the Internet (for remote > management). That is, I need to connect to Server to do remote > management. > > <--- NAT ---> > [ Server ] --- [ NT Gateway ] --- { Internet } --- [ Manager ] > 192.168.0.2 192.168.0.1 207.1.1.1 > 24.1.1.1 > > Manager is a highly available FreeBSD server (i.e., static public IP). > > The first thing that comes to mind is some kind of "pull" technique to > have *Server* initiate the connection. Server already initiates cron'd > SSH connections to Manager to do automated backup/rsync tasks, but I > can't think of a way to actually start an interactive login in that > manner. > > So far the best I've come up with is to configure a secure known path > on Manager for batch scripts (so, not really interactive, but close > enough for 90% of tasks) and have Server simply attempt to scp (pull) > the file at regular intervals, and execute its contents. Server can > capture the output and scp (push) that back to Manager. Manager never > actually initiates anything. Obviously, this will be a leading cause > of ass pain in troubleshooting scenarios, and will be a *real* pain > for anything that actually requires an interactive session. > > Unfortunately, that idea has, so far, been the *last* thing to come to > mind. Any *other* ideas? :-) > > Thanks, > - Ryan
Could you have Server start an xterm, or similar, and have it send the display to Manager - with something like 'xterm -display Manager:0' from Server? This is assuming that you are running X on Manager. Nathan -- GPG Public Key ID: 0x4250A04C gpg --keyserver pgp.mit.edu --recv-keys 4250A04C http://63.105.21.156/gpg_nkinkade_4250A04C.asc
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