From 4ff34a7aa86ab707ee5c5643ed890547f1c436ba Mon Sep 17 00:00:00 2001 From: Nico Schottelius Date: Wed, 8 May 2013 14:09:56 +0200 Subject: [PATCH] +ideas +callback.py Signed-off-by: Nico Schottelius --- callback.py | 2 ++ docs/dev/logs/2013-05-04.ssh | 56 ++++++++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) diff --git a/callback.py b/callback.py index b9103837..1bf5545a 100644 --- a/callback.py +++ b/callback.py @@ -24,3 +24,5 @@ import os # SSH_CLIENT and SSH_CONNECTION available src_ip = os.environ['SSH_CLIENT'].split()[0] + +print("Plain version: Connecting back to %s" % src_ip) diff --git a/docs/dev/logs/2013-05-04.ssh b/docs/dev/logs/2013-05-04.ssh index b00aa44b..9985ff05 100644 --- a/docs/dev/logs/2013-05-04.ssh +++ b/docs/dev/logs/2013-05-04.ssh @@ -3,3 +3,59 @@ SSH_CONNECTION='::1 38502 ::1 22' -> callback possible to source host + + + +[ target host ] <--------------| + | | + | | + | | + | trigger | configuration + | | + v | +[ configuration host ] ----| + + +- dynamic port allocation for tunneling + + [1:37] bento:~% ssh -R 0:localhost:22 localhost + Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts. + Allocated port 53161 for remote forward to localhost:22 + + SSH_AUTH_SOCK=/tmp/ssh-zDCWbUVcUK/agent.30749 + SSH_CLIENT='::1 38587 22' + SSH_CONNECTION='::1 38587 ::1 22' + SSH_TTY=/dev/pts/21 + + +- ssh_config: + DynamicForward + LocalForward + RemoteForward + +- testing + +[1:52] bento:cdist% netstat -anp | grep 56844 +(Not all processes could be identified, non-owned process info + will not be shown, you would have to be root to see it all.) +tcp 0 0 127.0.0.1:56844 0.0.0.0:* LISTEN - +tcp6 0 0 ::1:56844 :::* LISTEN - +[1:53] bento:cdist% + + +[1:48] bento:~% ssh -R 0:localhost:22 localhost +Allocated port 56844 for remote forward to localhost:22 +... + +- chatting + +01:42 -!- Irssi: Join to #openssh was synced in 0 secs +01:42 < telmich> good evening +01:43 < telmich> I am trying to make use of remote port forwarding using dynamic port + allocation (port=0) -- I am wondering if there is an easy way to + access the port number on the remote side easily? +01:44 < telmich> background for this question is: I'd like to allow various clients to + login to a configuration server, which then configures the clients by + using the tunnel the client provides for the server to ssh back into +02:07 < BasketCase> telmich: afaik you need to use a tool like ss/netstat/lsof to see what port it has open +