[vpsFree.cz: community-list] Security port 1001

[Timotej Šiškovič]

Caff,

Akurat som sa zacal snazit riesit security trosku serioznejsie co ma ale
prekvapuje ze mi nmap hlasi otvoreny port 1001 na oboch VPSkach obvzlast
vzhladdom na iptables rules.

Toto je iptables -L output:

Chain INPUT (policy ACCEPT)
> target     prot opt source               destination
> fail2ban-ssh  tcp  --  anywhere             anywhere             multiport
> dports ssh
> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:ssh
> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http
> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https
> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:smtp
> DROP       all  --  anywhere             anywhere
>
> Chain FORWARD (policy ACCEPT)
> target     prot opt source               destination
>
> Chain OUTPUT (policy ACCEPT)
> target     prot opt source               destination
>
> Chain fail2ban-ssh (1 references)
> target     prot opt source               destination
> DROP       all  --  61.174.51.208        anywhere
> RETURN     all  --  anywhere             anywhere
>

A toto mi hlasi nmap z lokalneho PC:

> Starting Nmap 6.00 ( http://nmap.org ) at 2014-02-15 20:00 CET
> Nmap scan report for sifro.co (185.8.164.47)
> Host is up (0.058s latency).
> Not shown: 995 filtered ports
> PORT     STATE SERVICE
> 22/tcp   open  ssh
> 25/tcp   open  smtp
> 80/tcp   open  http
> 443/tcp  open  https
> 1001/tcp open  unknown
>
> Nmap done: 1 IP address (1 host up) scanned in 23.22 seconds
>

Vie mi niekto povedat WTF? resp. co robim zle?

Vdaka
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