+ideas +callback.py

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
This commit is contained in:
Nico Schottelius 2013-05-08 14:09:56 +02:00
parent e49ccedeff
commit 4ff34a7aa8
2 changed files with 58 additions and 0 deletions

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@ -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)

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@ -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