no communication on ports

[zablowoj]

Hi,
Strange problem with Proxmox 8.0.3 and lxc container - ubuntu 22.04.
I have fresh configured MTA (based on iRedmail) after installation and configuration everything works OK.
I need to add zabbix agent to run on this server. After installation Zabbix-agent, configuration fw (on DC level - added port 10050) I can't connect to this port from zabbix server.
Firewall on lxc is off, fail2ban is off.

 

[Dunuin]

DC level firewall rules are only for the PVE nodes. Did you allow port 10050 also on LXC level?

 

[zablowoj]

DC level firewall rules are only for the PVE nodes. Did you allow port 10050 also on LXC level?

yes,
misspelling - PVE nodes have got own rule-set,
each lxc also has got own rule-set

problem is with services/ports which I want to add after installation and configuration iRedmail

moreover,
- probing with nc from inside lxc - communication OK
- probing with nc from outside lxc - comm error