Gufw not accepting subnet range in advanced firewall rule

[Kevin Reid]

This is observed in Gufw v14.04.2 LTS. Creating a rule with a subnet in the 'from' field of an advanced rule results in an error.

The example would be a requirement to only allow hosts in the same subnet to have access to a particular service (e.g. RDP) and so the 'from' field would be set to a subnet of 192.168.0.0/24.

Attempting to add the rule results in an error in the log of "Error running: ufw allow in log from 192.168.0.0/24 3389 > ERROR: Wrong number of arguments".

Gufw appears to be trying to run the command: "ufw allow in log from 192.168.0.0/24 3389" which errors but compare this with the syntax of ufw which would be "ufw allow in log from 192.168.0.0/24 to any port 3389". This works successfully so it looks like Gufw is presenting incorrect syntax for this configuration in this version.

[costales (costales)]

Thanks for your feedback Kevin :)

In the last version, I'm trying your screenshot and the command is:
ufw allow in log from 192.168.0.0/24 to any port 3389

Could you try the last version? It should work in your Mint version.

Thanks in advance!

[Kevin Reid (professor-knr)]

Hello Costales,

When you say the last version, which specific version do you mean? I am a Linux newbie so not fully knowledgeable on updates and versions unfortunately :-( . There is someone on linux mint forum who has tried Gufw subnet with latest ubuntu 16.04 build with success (see here http://forums.linuxmint.com/viewtopic.php?f=90&t=215465#wrap) - was this the latest version you were meaning?

[costales (costales)]

Don't worry :)
A new version of Mint will have a new version of Gufw.
This is fixed after your current version, then it's fixed in the last
versions of Mint :)
A hug!
--
Sent using Dekko from my Ubuntu device