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Netcat - Version OpenBSD

1. Installation

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$ pacman -S openbsd-netcat

2. Utilisation

  • Test port 

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    root@openbsd# nc -zv dns.quad9.net 53
Connection to dns.quad9.net (9.9.9.9) 53 port [tcp/domain] succeeded!

  • Test port via proxy 

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    root@openbsd# nc -X connect -x proxy.example.net:3128 -zv quad9.net 443
Connection to quad9.net 443 port [tcp/https] succeeded!

  • Test port via proxy avec authentification 

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    root@openbsd# nc -X connect -P username -x proxy.example.net:3128 -zv quad9.net 443
Proxy password for username@proxy.example.net:
Connection to quad9.net 443 port [tcp/https] succeeded!