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netstat (was: Re: Why does Debian allow all incoming traffic by default)

On Friday, September 21, 2018 08:55:21 AM Henning Follmann wrote:
> Run a netstat -t -l and you will see there is nothing listening. So what is
> the point of running a firewall?

I'm not the OP, but I decided to play along and run:

root@s19:~# netstat -t -l
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 localhost:smtp          *:*                     LISTEN     
tcp        0      0 *:microsoft-ds          *:*                     LISTEN     
tcp        0      0 *:netbios-ssn           *:*                     LISTEN     
tcp        0      0 *:53647                 *:*                     LISTEN     
tcp        0      0 *:sunrpc                *:*                     LISTEN     
tcp        0      0 localhost:ipp           *:*                     LISTEN     

(This on my wheezy system.)

What is that telling me, and should I be worried.

> By default no services (ipp might be the one exception) are running and
> listening. So that's your security, just don't run what you don't need.
> -H

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