Linux Firewall Test

Hi,

Does anyone have any recommendations on how to scan or test my Linode firewall's setup?

I'd like to be certain that what I think is open and closed is actually what's deployed.

Thanks!

4 Replies

From outside:````
nmap -v -A your.server

From inside:````
netstat -ntulp

Iptables -L will list your current firewall rules. Or ufw status if you are on Ubuntu using that.

There's a nice gui for nmap at http://nmap.org/zenmap/ which is cross platform.

Thanks for the suggestions. Those worked great!

Was looking for the same information.

Thanks a lot for the answers!

Reply

Please enter an answer
Tips:

You can mention users to notify them: @username

You can use Markdown to format your question. For more examples see the Markdown Cheatsheet.

> I’m a blockquote.

I’m a blockquote.

[I'm a link] (https://www.google.com)

I'm a link

**I am bold** I am bold

*I am italicized* I am italicized

Community Code of Conduct