Re: PING zakazat/nezakazat?

From: KAB / Konference <konference (zavinac)>
Date: 09. 09. 2004, 17:01 CEST
> To druhe - tvoj pocitac nebude reagovat na pingy - imho zakazat
> mozes... Akurat ze ak si na sieti, tak ten kto ta pingne, sa 
> nedozvie ci mas zapnute PC.

  Ja bych to upravil takto: "..tak lama, ktora ta pingne, 
sa nedozvie ci mas zapnute PC." ;)

  ICMP neni ani zdaleka jedina sance, jak zjistit, jestli 
pocitac bezi a jestli je IP adresa vubec nejakemu zarizeni 
pridelena. To se da na 100% udelat jedine tak, ze pocitac 
vypnes anebo alespon z nej vytahas vsechny kabely, pripadne 
vsechny wireless karty. 

  Moznosti, jak to zjistit je rada, ted jsem jen tak narychlo 
a bez optimalizace prikazu zkusil jeden pocitac, ktery ma 
zakazany ping: 

[@home kab]# nmap -P0F 194.cen.zor.ed
Starting nmap
Interesting ports on xxx.cenzored.cz (194.cen.zor.ed):
(The 1652 ports scanned but not shown below are in state: filtered)
PORT     STATE  SERVICE
25/tcp   open   smtp
113/tcp  closed auth
139/tcp  open   netbios-ssn
443/tcp  open   https
1352/tcp open   lotusnotes
5801/tcp open   vnc-http-1
6000/tcp open   X11
Nmap run completed -- 1 IP address (1 host up) scanned in 352.201 seconds

Zdar KAB 
Received on Thu, 9 Sep 2004 17:01:59 +0200

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