LXC Ubantu cannot connect through the extranet

[Will Smith]

Problem

1. I can't SSH to Ubuntu on LXC through the external network, but I can SSH to the internal network
2. The internal network can be connected via 22 with no problem, but the external network cannot, and the port is already open on the router.
3. I tried to turn off the firewall, but the LXC Ubuntu, which is more like a lite version, prompts me that some of the common firewalls are not installed.
4. I tried changing to a different CentOS version, but to no avail
5. CentOS in the same environment is working fine without problems

Please help me

 

[oguz]

hi,

The internal network can be connected via 22 with no problem, but the external network cannot, and the port is already open on the router.

how did you make your port forwarding rule?

it should be pointing to the internal IP address of your ubuntu container.

e.g. if you container IP is 192.168.1.100 and firewall public IP is 1.2.3.4:

internet --ssh--> firewall (1.2.3.4:2222) --forward--> 192.168.1.100:22

then you should be able to reach your container by ssh: ssh 1.2.3.4 -p 2222 (or whichever port you used)

 

[Will Smith]

OK, it is indeed a problem in this area, I found that the routing forwarding rules are duplicated, resulting in this problem, the external port is 3003, however, this port has been occupied, so there is a problem that the internal network can access the external network can not connect

Thank you very much! Have a nice life.