UFW settings

[ascwonter]

Hello everyone,

I never added any rules to UFW for NoMachine. Can someone explain to me how NoMachine is working despite UFW being enabled with no specific ports opened on UFW?

Thanks!

[Haven]

Hello ascwonter,
NoMachine automatically configures the most common firewalls so users do not have to do it manually. You can find more details about this feature in server.cfg key description.

#
# Enable the server to automatically configure the firewall for all
# the configured services. On platforms that don’t support adding
# the specific executables to a white list, the needed ports are
# added at server startup and removed at server shutdown, or when,
# at run-time, a new port is needed. The default value is 1.
#
# 1: Enabled. NoMachine opens the required ports in the firewall.
#
# 0: Disabled. Firewall must be configured manually. By default
# the required ports are TCP ports 4000 for NX, 4080 and 4443
# for HTTP and UDP ports in the range 4011-4999 range.
#
#EnableFirewallConfiguration 1

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