externel ip:port not reachable from inside behind nat

eb8

Member
Jun 10, 2019
17
1
8
59
hello,
I'm struggling with with a "simple" setup.

vmbr0 has ext-IP
vmbr1 is nat

LXC is connected to vmbr1 only
portforwarding from outside is working

the service within the LXC needs to check the availability of the configured ext-IP an tries to reach it's port(forwarding) -> does not work, (same with nmap)
what would be necessary to configure, that the service can check it's Port on the ext-IP?

TIA
guenter
 
Needs to be done form the outside. And why would the destination (CT) need to check this?
 

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