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#!/bin/bash
#
# Simple script blocking requests from proxy to home server
#
# This works only on Linux. It can be used to create random networking issues.
if [ $UID -ne 0 ]; then
echo "Only 'root' can modify 'iptables' rules"
exit 1
fi
# avoid keep the server blocked
function trap_ctrlc ()
{
echo "Ctrl-C caught...performing clean up"
iptables -D INPUT -p tcp --dport 2083 -j REJECT 1> /dev/null 2>&1
exit 0
}
trap "trap_ctrlc" 2
MAXWAIT=5
while true; do
_wait="$((RANDOM % MAXWAIT))"
echo "(*) Blocking the port 2083 for ${_wait}s"
iptables -A INPUT -p tcp --dport 2083 -j REJECT
sleep $_wait
echo "(*) Allowing the port 2083 for ${_wait}s"
iptables -D INPUT -p tcp --dport 2083 -j REJECT
sleep $_wait
done
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