| Server IP : 37.9.174.138 / Your IP : 216.73.216.117 Web Server : Apache System : Linux vps6.backend.sk 6.12.100+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.100-1 (2026-07-30) x86_64 User : ftpuser ( 1001) PHP Version : 8.4.24 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /etc/knockd/ |
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#!/bin/sh
# vstup je ip adresa a port
IP=$1
if [ $# -ne 1 ]; then
echo vstup adresa
exit 255
fi
fcia()
{
iptables -L knock -n | grep ACCEPT | grep -F " ${IP} " | egrep -q "dpt:${PORT}[^0-9]"
# 0 je ak nasiel ze uz eistuje
zatialneexistuje=$?
if [ $zatialneexistuje -eq 1 ]; then
echo povolujem
/sbin/iptables -I knock -s $IP -p tcp --dport $PORT -j ACCEPT
fi
}
PORT=22
fcia
PORT=21
fcia
PORT=10000
fcia
PORT=3306
fcia
PORT=3389
fcia
iptables -L knock -n