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Memeriksa Listen Port di Linux

Artikel ini hanya bertujuan membantu tugas administrator Linux untuk memeriksa jalannya port services.

  • netstat

Syntax : netstat option

Contoh :

netstat -tlnp | grep httpd

atau

netstat -uapn | grep bind

Dimana :

t = tcp
l = listening
n = numeric
p = program
u = udp

  • netcat

Syntax : netcat option hostname port[s]

Contoh :

netcat -n localhost 80

Dimana :

n = numeric

  • nmap (harus install paket terlebih dahulu, tidak tersedia secara default)

Syntax : nmap option host [port]

Contoh :

nmap -sT localhost -p 80

atau

nmap -sU localhost -p 53

Dimana :

sT : TCP scan

sU : UDP scan

p : port

Selamat mencoba!

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