# This file is interpreted as shell script.
# Put your custom iptables rules here, they will
# be executed with each firewall (re-)start.

BRUTEFORCE_PROTECTION_START=3
BRUTEFORCE_DROPPORT=55555
PROTO=tcp
ROUTERIP=$(uci get network.lan.ipaddr)

########################################
#SSH Brute Force protection on port 2222
PROTECTEDPORT=2222
SERVICEPORT=22
SERVICE=SSH

echo Enabling Brute Force protection for $SERVICE on port $PROTECTEDPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --set --name $SERVICE -j DNAT --to-destination $ROUTERIP:$SERVICEPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --update --seconds 60 --hitcount $BRUTEFORCE_PROTECTION_START --name $SERVICE -j DNAT --to-destination $ROUTERIP:$BRUTEFORCE_DROPPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --rcheck --seconds 60 --hitcount $BRUTEFORCE_PROTECTION_START --name $SERVICE -j LOG --log-prefix "BruteForce-${SERVICE} "
########################################

########################################
#FTP Brute Force protection on port 2221
PROTECTEDPORT=2221
SERVICEPORT=21
SERVICE=FTP

echo Enabling Brute Force protection for $SERVICE on port $PROTECTEDPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --set --name $SERVICE -j DNAT --to-destination $ROUTERIP:$SERVICEPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --update --seconds 60 --hitcount $BRUTEFORCE_PROTECTION_START --name $SERVICE -j DNAT --to-destination $ROUTERIP:$BRUTEFORCE_DROPPORT
iptables --table nat -I zone_wan_prerouting -p $PROTO --dport $PROTECTEDPORT -m state --state NEW -m recent --rcheck --seconds 60 --hitcount $BRUTEFORCE_PROTECTION_START --name $SERVICE -j LOG --log-prefix "BruteForce-${SERVICE} "
########################################

########################################
#Block URL on certain time for specified IP
#
#URL_STRING=facebook.com
#LOCAL_IP=192.168.1.188
#TIME_START=10:00
#TIME_END=16:00
#
#echo Blocking $URL_STRING from $LOCAL_IP at time interval $TIME_START - $TIME_END
#iptables -I FORWARD -s $LOCAL_IP -m string --string $URL_STRING --algo bm -m time --weekdays Mon,Tue,Wed,Thu,Fri --timestart $TIME_START --timestop $TIME_END -j DROP
########################################