13.5. IP Aliases

IP Aliases allow you to associate IP addresses of networks with a name. You can then refer to those names:

This alias is automatically defined. Please use the following command to see assigned values:

# pve-firewall localnet
local hostname: example
local IP address: 192.168.2.100
network auto detect: 192.168.0.0/20
using detected local_network: 192.168.0.0/20

The firewall automatically sets up rules to allow everything needed for cluster communication (corosync, API, SSH) using this alias.

The user can overwrite these values in the cluster.fw alias section. If you use a single host on a public network, it is better to explicitly assign the local IP address

#  /etc/pve/firewall/cluster.fw
[ALIASES]
local_network 1.2.3.4 # use the single IP address