netcat bağlantı sorunu

-bash-4.1# nc -l -n -v -p 2121 usage: nc [-46DdhklnrStUuvzC] [-i interval] [-p source_port] [-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_version]...

-bash-4.1# nc -l -n -v -p 2121
usage: nc [-46DdhklnrStUuvzC] [-i interval] [-p source_port]
[-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_version]
[-x proxy_address[:port]] [hostname] [port]
böyle bişey var necat kurulumu hakkında bilgisi olan varmı
 
-bash-4.1# nc -vlp 2121
usage: nc [-46DdhklnrStUuvzC] [-i interval] [-p source_port]
[-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_version]
[-x proxy_address[:port]] [hostname] [port]
-bash-4.1#
 
CentOS release 6.7 (Final)
CentOS release 6.7 (Final)
CentOS release 6.7 (Final)

-bash-4.1# yum install netcat
Loaded plugins: fastestmirror, security
Setting up Install Process
Loading mirror speeds from cached hostfile
epel/metalink | 23 kB 00:00
* base: fr.mirror.babylon.network
* epel: epel.mirrors.ovh.net
* extras: fr.mirror.babylon.network
* remi-safe: fr.mirror.babylon.network
* updates: mirror.guru
base | 3.7 kB 00:00
extras | 3.4 kB 00:00
nginx | 2.9 kB 00:00
remi-safe | 2.9 kB 00:00
updates | 3.4 kB 00:00
vesta | 2.9 kB 00:00
No package netcat available.
 
Sorunu çözdüm arkadaşlar böyle bir sorun yaşanlar olursa
service iptables stop
iptables -A INPUT -p tcp --dport 2121 -j ACCEPT
netcat komutu
nc -l 2121 sonra direk backconnet oluyor
-bash-4.1# nc -l 2121
# <==BackConnect Shell==>
 
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