Specifying a random monitoring port with autossh
Clash Royale CLAN TAG#URR8PPP
I have many reverse ssh tunnels and because monitoring ports can't be reused, I am trying to find a free random port for monitoring.
Meanwhile I specified -M 0 and the forwards work great and in most cases: when there is a disconnection, it will automatically reconnect. However, sometimes, on rare occasion, a connection will hang and think it is connected even if it has gone stale.
Is it possible to setup a random monitoring port?
What I tried:
- When I specify a port with -M [port] , I can't monitor more than one connect
- When I specify -M 0 and use ServerAlive, rarely the connection hangs
- I added ClientAlive in sshd_config and specify ServerAlive in the command line
Because my reverse port forward occasionally becomes stale, it makes it unreliable
Thanks in advance
ssh-tunneling openssh port-forwarding
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
add a comment |
I have many reverse ssh tunnels and because monitoring ports can't be reused, I am trying to find a free random port for monitoring.
Meanwhile I specified -M 0 and the forwards work great and in most cases: when there is a disconnection, it will automatically reconnect. However, sometimes, on rare occasion, a connection will hang and think it is connected even if it has gone stale.
Is it possible to setup a random monitoring port?
What I tried:
- When I specify a port with -M [port] , I can't monitor more than one connect
- When I specify -M 0 and use ServerAlive, rarely the connection hangs
- I added ClientAlive in sshd_config and specify ServerAlive in the command line
Because my reverse port forward occasionally becomes stale, it makes it unreliable
Thanks in advance
ssh-tunneling openssh port-forwarding
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
add a comment |
I have many reverse ssh tunnels and because monitoring ports can't be reused, I am trying to find a free random port for monitoring.
Meanwhile I specified -M 0 and the forwards work great and in most cases: when there is a disconnection, it will automatically reconnect. However, sometimes, on rare occasion, a connection will hang and think it is connected even if it has gone stale.
Is it possible to setup a random monitoring port?
What I tried:
- When I specify a port with -M [port] , I can't monitor more than one connect
- When I specify -M 0 and use ServerAlive, rarely the connection hangs
- I added ClientAlive in sshd_config and specify ServerAlive in the command line
Because my reverse port forward occasionally becomes stale, it makes it unreliable
Thanks in advance
ssh-tunneling openssh port-forwarding
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
I have many reverse ssh tunnels and because monitoring ports can't be reused, I am trying to find a free random port for monitoring.
Meanwhile I specified -M 0 and the forwards work great and in most cases: when there is a disconnection, it will automatically reconnect. However, sometimes, on rare occasion, a connection will hang and think it is connected even if it has gone stale.
Is it possible to setup a random monitoring port?
What I tried:
- When I specify a port with -M [port] , I can't monitor more than one connect
- When I specify -M 0 and use ServerAlive, rarely the connection hangs
- I added ClientAlive in sshd_config and specify ServerAlive in the command line
Because my reverse port forward occasionally becomes stale, it makes it unreliable
Thanks in advance
ssh-tunneling openssh port-forwarding
ssh-tunneling openssh port-forwarding
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
asked Oct 22 '14 at 20:17
Youn ElanYoun Elan
1165
1165
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
I ended up finding the answer:
- have an echo server on the ssh server and specify that as the monitoring port for all connections (better but requires setting up an echo server)
- find an available port range and have a way for each connection to create a unique port forward on a different port.
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I ended up finding the answer:
- have an echo server on the ssh server and specify that as the monitoring port for all connections (better but requires setting up an echo server)
- find an available port range and have a way for each connection to create a unique port forward on a different port.
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
add a comment |
I ended up finding the answer:
- have an echo server on the ssh server and specify that as the monitoring port for all connections (better but requires setting up an echo server)
- find an available port range and have a way for each connection to create a unique port forward on a different port.
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
add a comment |
I ended up finding the answer:
- have an echo server on the ssh server and specify that as the monitoring port for all connections (better but requires setting up an echo server)
- find an available port range and have a way for each connection to create a unique port forward on a different port.
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
I ended up finding the answer:
- have an echo server on the ssh server and specify that as the monitoring port for all connections (better but requires setting up an echo server)
- find an available port range and have a way for each connection to create a unique port forward on a different port.
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
answered Oct 27 '14 at 20:40
Youn ElanYoun Elan
1165
1165
add a comment |
add a comment |
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