> On Thursday 30 September 2004 10:15 am, Tony Ly wrote:
>
>> Theo nmap output tre^n thi`:
>> 68/tcp open dhcpclient - co' the^? ko ca^`n
>> 631/tcp open ipp - internet printing: cha('c ko ca^`n luo^n
>>
>> Ba'c co' the^? ba('t ddaa^`u tu+` file na`y: /etc/inetd.conf. Coi
>> trong ddo' co' ca'i na`o lie^n quan dde^'n dhcpclient va` ipp thi`
>> comment it out (du`ng text editor, bo? da^'u # tru+o+'c ca'i line
>
> Sau khi cha.y ca'i script /sbin/myfile, go~ :
>
> [EMAIL PROTECTED]:/home/knoppix# nmap -v localhost
>
> Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-10-02
> 05:06 EDT
> Host box (127.0.0.1) appears to be up ... good.
> Initiating SYN Stealth Scan against box (127.0.0.1) at 05:06
> Adding open port 631/tcp
> Adding open port 68/tcp
> The SYN Stealth Scan took 1 second to scan 1660 ports.
> Interesting ports on box (127.0.0.1):
> (The 1658 ports scanned but not shown below are in state: closed)
> PORT STATE SERVICE
> 68/tcp open dhcpclient
> 631/tcp open ipp
>
> Nhu+ng trong /etc/inetd.conf ta^'t ca? ca'c do`ng dde^`u dda~ # ca?
> ro^`i (file attach). Va^.y sao khi cha.y nmap -v localhost no' co`n
> ba'o 2 ca'i PORT?
>
Cha'u no'i ba('t dda^`u tu+` ca'i file na`y la` ta.i vi` nhie^`u systems
va^~n co`n du`ng no' o+? default. Ba'c tha^'y nhu+~ng services tre^n
va^~n co`n mo+? la` do /etc/services file. Ba'c edit ca'i file na`y,
ro^`i ti`m to+'i port 68 va` 631, bo? no' ra (comment it out with # sign).
Xong restart ma^'y ca'i services na`y (ko bie^'t knoppix restart la`m sao
vi` cha'u ko co' du`ng. Ne^'u ba'c ko bie^'t thi` reboot cho tie^.n).
xong cha.y nmap la.i se~ tha^'y no' ddo'ng ma^'t. Khi mi`nh ddo^?i
/etc/services thi` no' se~ ddo^?i permanent luo^n.
> Hie^.n ta.i, khi vu+`a boot ma'y le^n, chu+a cha.y /sbin/myfile thi`
> cu~ng dda~ va`o net ddu+o+.c ro^`i. Cha.y ca'i /sbin/myfile la` dde^?
> ta(ng cu+o+`ng ma^'y ca'i o^? khoa' Yale pha?i kho^ng?
Ca'i /sbin/myfile la` ca'i gi` va^.y? Co' le~ la` custom script cu?a ba'c
hay cu?a ai la`m cho ba'c pha?i ko?
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