chao bac Hai, 
Bac xem thu trong /etc/services (redhat) roi restart
network daemon.    

Chinh.
ps: hinh hu bac khong ngu ban ddem thi phai :)



--- [EMAIL PROTECTED] wrote:

> 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?
> 
> 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?
> 
> -- 
> m k h _ s g n
> 
> 
> 
> 
> > #<off># # /etc/inetd.conf:  see inetd(8) for
further
> informations.
> #
> #<off># # Internet server configuration database
> #
> #
> #<off># # Lines starting with "#:LABEL:" or
> "#<off>#" should not
> #<off># # be changed unless you know what you are
> doing!
> #
> #<off># # If you want to disable an entry so it
> isn't touched during
> #<off># # package updates just comment it out with a
> single '#' character.
> #
> #<off># # Packages should modify this file by using
> update-inetd(8)
> #
> # <service_name> <sock_type> <proto> <flags> <user>
> <server_path> <args>
> #
> #<off># #:INTERNAL: Internal services
> #<off># #echo         stream  tcp     nowait  root    internal
> #<off># #echo         dgram   udp     wait    root    internal
> #<off># #chargen      stream  tcp     nowait  root    internal
> #<off># #chargen      dgram   udp     wait    root    internal
> #<off># discard               stream  tcp     nowait  root    internal
> #<off># discard               dgram   udp     wait    root    internal
> #<off># daytime               stream  tcp     nowait  root    internal
> #<off># #daytime      dgram   udp     wait    root    internal
> #<off># time          stream  tcp     nowait  root    internal
> #<off># #time         dgram   udp     wait    root    internal
> 
> #<off># #:STANDARD: These are standard services.
> #<off># ftp           stream  tcp     nowait  root    /usr/sbin/tcpd
> /usr/sbin/in.ftpd
> 
> #<off># #:BSD: Shell, login, exec and talk are BSD
> protocols.
> 
> #<off># #:MAIL: Mail, news and uucp services.
> 
> #<off># #:INFO: Info services
> 
> #<off># #:BOOT: Tftp service is provided primarily
> for booting.  Most sites
> #<off># # run this only on machines acting as "boot
> servers."
> #<off># tftp          dgram   udp     wait    root    /usr/sbin/in.tftpd
> in.tftpd /boot
> 
> #<off># #:RPC: RPC based services
> 
> #:HAM-RADIO: amateur-radio services
> 
> #<off># #:OTHER: Other services
> #<off># #<off># netbios-ssn   stream  tcp     nowait  root
> /usr/sbin/tcpd        /usr/sbin/smbd
> #<off># printer stream tcp nowait lp
> /usr/lib/cups/daemon/cups-lpd cups-lpd
> #<off># vboxd stream  tcp     nowait  root    /usr/sbin/tcpd
> /usr/sbin/vboxd
> #<off># saft  stream  tcp     nowait  root    /usr/sbin/tcpd
> /usr/sbin/sendfiled
> #<off># #<off># 3632           stream  tcp    
> nowait.100      distccd    /usr/sbin/tcpd
> /usr/bin/distccd --inetd
> --log-file=/var/log/distccd.log --nice=10
> #<off># xtel            stream  tcp     nowait  root
>    /usr/sbin/tcpd /usr/sbin/xteld
> #<off># #<off># https   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 80
> #<off># #<off># ssmtp   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 25
> #<off># #<off># nntps   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 119
> #<off># #<off># telnets   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 23
> #<off># imaps   stream  tcp nowait  sslwrap.sslwrap
> /usr/sbin/tcpd  /usr/sbin/sslwrap  -nocert -addr
> 127.0.0.1 -port 143
> #<off># #<off># ircs   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 194
> #<off># pop3s   stream  tcp nowait  sslwrap.sslwrap
> /usr/sbin/tcpd  /usr/sbin/sslwrap  -nocert -addr
> 127.0.0.1 -port 110
> #<off># #<off># ftps-data   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 20
> #<off># #<off># ftps   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 21
> #<off># #<off># ldaps   stream  tcp nowait 
> sslwrap.sslwrap /usr/sbin/tcpd  /usr/sbin/sslwrap 
> -nocert -addr 127.0.0.1 -port 389
> #<off># amanda dgram udp wait backup /usr/sbin/tcpd
> /usr/lib/amanda/amandad
> 
> 



                
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