I would like to add more port redirection for slirp after coLinux has already started (similar to ssh, where you could escape back to ssh control and add/delete additional port forwarding entry). Is it possible in coLinux? For now, I have to edit the configuration file and restart coLinux everytime a new port is needed to be opened to the outside world.
Currenty no other way is available.
But you can leave open some more ports or a port range, more as you need currently. Than you have reserve for next time aoyou would open a new port.
For example 100 ports from 2200 to 2249 are redirected: