linux vm
IPv4 addr
10.0.0.2
A 192.0.2.5
jitsi5.example.com
docker engine
80
443
10000
TCP
TCP
UDP
80
443
10000
TCP
TCP
UDP
containers
running
jitsi &
stuff
router / firewall
Internal NIC
IPv4 addr
10.0.0.1
External NIC
IPv4 addr
192.0.2.5
port forwarding
SNAT
jitsi user
-
internal
IPv4 addr
10.0.0.10
web browser
or
jitsi app
10.0.0.0/24
jitsi user
-
external
web browser
or
jitsi app
public IPv4 addr
(or behind one)
DNS Query