[LUGOS] Closed port

[Damjan Kreft]

Dalibor wrote:
> z nmap -sS -p0 xxx.xxx.xxx.xxx sem dobil sledeče:
> Port       State       Service
> 20/tcp     closed      ftp-data
> 21/tcp     closed      ftp
> 25/tcp     open        smtp
> 53/tcp     closed      domain
> 80/tcp     open        http
> 110/tcp    open        pop-3
> 143/tcp    open        imap2
> 443/tcp    closed      https
> 
> Kaj točno pomeni da je port closed in kakšen smisel ima to? Npr. Apache 
> je startan in im port closed!
> 
> lp
> dalibor

open pomeni, da laufa nek servis na tem portu in da "zunanji svet" lahko 
dostopa do njega..
closed pa pomeni, da laufa nek servis, ampak je dostop do njega za 
"zunanji svet" onemogocen.. to se pravi, da firewall ne pusti prometa na 
ta port

lp, d