firewall/firewall2.sh
Your Name 9b6c16301e fix
2024-09-12 18:55:45 -06:00

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#!/bin/bash
MY_IP="47.5.112.50"
ATTACK_THRESHOLD="50"
SERVER_IP='192.168.0.55'
NGINX_ACCESS="/tmp/access.log"
#WIREGUARD=(51820)
WIREGUARD=(57692)
WEB=(80 443)
ADGUARD=(3000 8082 853)
UPTIME=(4001)
DNS=(53 67 68)
CUPS=(631 5353)
BITCOIN=(8333 8332 8334 4050)
LND=(10009 9735 8080 28334 28333 19998 29000)
SYNCTHING=(22000 8384 21027)
NFS=(2049 111)
JELLYFIN=(8096 7359)
MACHINES=(127.0.0.1)
VIRT_BRIDGE="virbr0"
ADMIN=(22)
#### NFT CONFIG ####
NFT='/usr/sbin/nft'
NFT_TCP="$NFT add rule ip filter input tcp dport"
NFT_UDP="$NFT add rule ip filter input udp dport"
NFT6_UDP="$NFT add rule ip6 filter input udp dport"
NFT6_TCP="$NFT add rule ip6 filter input tcp dport"
NFT_DROP='counter drop'
NFT_ACCEPT='counter accept'
NFT='/usr/sbin/nft'
NFT_CACHE='/tmp/nft.cache'
TMP_BLOCK='/tmp/tmp-blocked.txt'
####
SAVED_BOTS='/opt/firewall/bots.txt'
CRAWLER_DB='/opt/firewall/crawlers.txt'
SAFE_TRAFFIC='/opt/firewall/safe.txt'
PEDO_DB='/opt/firewall/pedo.txt'
PEDO_LOG='/opt/firewall/pedo-log.txt'
ATTACKER_DB='/opt/firewall/attacker-db.txt'
ATTACKER_LOG='/opt/firewall/attackers.txt'
BOT_ACCOUNT="blockbot@detroitriotcity.com"
CRAWLER_TMP='/tmp/crawlers.txt'
DATE="$(date +%Y:%H: -d "1 hour ago")"
#DATE="$(date +%Y:%H:)";
RULE_SET='/opt/firewall/nft.rules'
MENU_TOP="=============================FireWall================================="
MENU_BOTTOM="====================================================================="
COUNTRY=(
https://www.ipdeny.com/ipblocks/data/countries/il.zone
https://www.ipdeny.com/ipblocks/data/countries/cn.zone
)
nft list table filter >$NFT_CACHE
blockCountry() {
for i in "${COUNTRY[@]}"; do
echo
echo "Blocking $i"
DB=($(curl $i))
for j in "${DB[@]}"; do
$NFT add rule ip filter input position 8 ip saddr $j $NFT_DROP
done
done
}
wireguard-networking() {
$NFT add table nat
$NFT add chain nat postrouting
$NFT add rule nat postrouting oif wg0 iif enp11s0
$NFT add rule nat postrouting oif enp11s0 iif wg0
$NFT add rule nat postrouting masquerade
$NFT add rule filter forward iifname wg0 oif enp11s0 $NFT_ACCEPT
$NFT add rule filter forward iifname enp11s0 oif wg0 $NFT_ACCEPT
$NFT add rule ip filter input ip saddr 192.168.5.0/24 $NFT_ACCEPT
}
attacker-protection() {
saved-attackers
watch
pedo-search
bot-search
}
bot-search() {
DATE="$(date +%d/%b/%Y:%H:%M -d '1 min ago')"
CRAWLERS=($(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep -Evi 'Guro|spank|report|rape|block' | grep -Ei -f $CRAWLER_DB | grep -Evi -f $SAFE_TRAFFIC | cut -d "-" -f1 | sort -u))
echo
echo "Processing Web Crawler list into NFT....."
echo
for i in "${CRAWLERS[@]}"; do
CHECK=$(cat $NFT_CACHE | grep $i)
if [ "$CHECK" = "" ]; then
$NFT add rule ip filter input position 8 ip saddr $i $NFT_DROP
echo $i >>$SAVED_BOTS
else
echo
echo "Skipping Duplicate IP $i"
echo
fi
done
}
drc-alert() {
toot activate $BOT_ACCOUNT
toot post ":emergency: :hacker_p: :hacker_e: :hacker_d: :hacker_o: :trans: :hacker_a: :hacker_l: :hacker_e: :hacker_r: :hacker_t: :emergency2: $1" -m /root/detroit/akkoma/blockbot/pedo.png
}
pedo-search() {
DATE="$(date +%d/%b/%Y:%H:%M -d '1 min ago')"
echo
PEDO_SEARCH=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep -Ei 'tag|search' | grep -Evi -f $CRAWLER_DB | grep -Ei -f $PEDO_DB | head -1)
echo $PEDO_SEARCH
if [ "$PEDO_SEARCH" ]; then
echo "Pedo Found!"
echo "Processing Pedo Searches into NFT....."
IP=$(echo $PEDO_SEARCH | cut -d ' ' -f1)
$NFT add rule ip filter input position 8 ip saddr $IP $NFT_DROP
message "[Pedo Alert] $PEDO_SEARCH"
drc-alert "$PEDO_SEARCH"
else
echo
echo "No Pedos Found"
echo
fi
}
basic-security() {
$NFT add rule filter input icmp type echo-request $NFT_DROP
$NFT add rule filter input log
$NFT rule filter input log $NFT_DROP
$NFT rule filter output $NFT_ACCEPT
$NFT rule filter forward $NFT_ACCEPT
$NFT insert rule filter input ct state established $NFT_ACCEPT
$NFT insert rule filter input iif lo $NFT_ACCEPT
# $NFT -f /opt/firewall/ipv6-filter.nft
# $NFT add rule ip6 filter input icmpv6 type nd-neighbor-solicit $NFT_DROP
# $NFT add rule ip6 filter input icmpv6 type nd-router-advert $NFT_DROP
$NFT add rule filter input drop
}
virtualization() {
ip link del virbr0
killall dnsmasq
/usr/bin/systemctl restart libvirtd
/usr/bin/virsh net-start default
/usr/bin/systemctl restart pleroma
$NFT insert rule filter input iif $VIRT_BRIDGE $NFT_ACCEPT
}
uptimeKuma() {
for i in "${UPTIME[@]}"; do
$NFT add rule ip filter input ip saddr $SERVER_IP tcp dport $i accept
done
}
admin() {
for i in "${ADMIN[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
done
}
wireguard() {
sysctl -w net.ipv4.conf.all.forwarding=1
for i in "${WIREGUARD[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_UDP $i $NFT_ACCEPT
done
}
web() {
for i in "${WEB[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
done
}
dns() {
for i in "${DNS[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_UDP $i $NFT_ACCEPT
done
}
adguard() {
for i in "${ADGUARD[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
done
}
cups() {
for i in "${CUPS[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_UDP $i $NFT_ACCEPT
done
}
bitcoin() {
for i in "${BITCOIN[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
done
}
lnd() {
for i in "${LND[@]}"; do
$NFT add rule ip filter input ip saddr $SERVER_IP tcp dport $i accept
done
}
syncthingServer() {
for i in "${SYNCTHING[@]}"; do
$NFT add rule ip filter input ip saddr $SERVER_IP tcp dport $i accept
done
}
syncthing() {
for i in "${SYNCTHING[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_UDP $i $NFT_ACCEPT
done
}
jellyfin() {
for i in "${JELLYFIN[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
#$NFT6_TCP $i $NFT_ACCEPT
#$NFT6_UDP $i $NFT_ACCEPT
done
}
kde-connect() {
$NFT_TCP 1714-1764 $NFT_ACCEPT
$NFT_UDP 1714-1764 $NFT_ACCEPT
}
nfs() {
for i in "${NFS[@]}"; do
$NFT_TCP $i $NFT_ACCEPT
$NFT_UDP $i $NFT_ACCEPT
done
}
trust() {
for i in "${MACHINES[@]}"; do
$NFT add rule filter input ip saddr $i $NFT_ACCEPT
done
}
import() {
STATS=($(cat $SAVED_BOTS | sort -u))
for i in "${STATS[@]}"; do
if [[ $i == *":"* ]]; then
echo "Skipping ipv6"
else
$NFT add rule ip filter input ip saddr $i $NFT_DROP &
fi
done
}
start() {
$NFT flush ruleset
# if [ -f "$RULE_SET" ]; then
# echo
# echo "Importing Existing Rule Set"
#$NFT -f $RULE_SET
# else
#echo
#echo "No existing Rules saved"
$NFT -f /opt/firewall/ipv4-filter.nft
# fi
if [[ $HOSTNAME == *"nas"* ]]; then
import
attacker-protection
wireguard
web
admin
adguard
dns
cups
syncthingServer
syncthing
blockCountry
jellyfin
wireguard-networking
uptimeKuma
docker restart uptime-kuma
$NFT insert rule filter input iif docker0 $NFT_ACCEPT
basic-security
else
virtualization
basic-security
fi
message "Starting Firewall"
}
research() {
DATE="$(date +%d/%b/%Y:%H:%M -d '1 min ago')"
STATS=($(cat $TMP_BLOCK | sort -u))
for i in "${STATS[@]}"; do
echo $MENU_TOP
echo " [Researching $i] "
echo
DATA=$(grep $i $NGINX_LOG | grep -Evi -f $SAFE_TRAFFIC)
echo "$DATA"
echo
echo $MENU_BOTTOM
echo
read -p 'Press Enter to Continue ' -e
done
}
automaticStatus() {
status
sleep 30
automaticStatus
}
status() {
clear
DATE="$(date +%d/%b/%Y:%H:%M -d '1 min ago')"
STATS=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | wc -l)
GET=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep GET | wc -l)
POST=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep POST | wc -l)
PUT=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep -i PUT | wc -l)
NOT_FOUND=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep 404 | wc -l)
GATEWAY=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep 502 | wc -l)
SUCCESS=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep 200 | wc -l)
CRAWL=$(grep $DATE $NGINX_ACCESS | grep -vi $MY_IP | grep -Ei -f $CRAWLER_DB | wc -l)
echo $MENU_TOP
echo "Attack Threshold: $ATTACK_THRESHOLD"
echo "Firewall Rules: $($NFT list table filter | wc -l)"
echo
echo "Traffic Last Minute: $STATS"
echo " GET: $GET"
echo " PUT: $PUT"
echo " POST: $POST"
echo " Crawlers: $CRAWL"
echo
echo "Query Stats:: "
echo " 200: $SUCCESS"
echo " 404: $NOT_FOUND"
echo " 502: $GATEWAY"
echo
echo "Dropped Traffic: $($NFT list table filter | grep -Ei 'log counter packets' | cut -d ' ' -f6)"
echo
echo "Rate-limited IP's:"
cat $TMP_BLOCK | sort -u
echo $MENU_BOTTOM
}
stop() {
#forgive
$NFT -s list ruleset | tee $RULE_SET
$NFT flush ruleset
$NFT -f /usr/share/nftables/ipv4-filter.nft
$NFT add rule filter input icmp type echo-request $NFT_ACCEPT
$NFT rule filter input $NFT_ACCEPT
$NFT rule filter output $NFT_ACCEPT
$NFT rule filter forward $NFT_ACCEPT
$NFT insert rule filter input ct state established $NFT_ACCEPT
$NFT insert rule filter input iif lo $NFT_ACCEPT
$NFT -f /opt/firewall/ipv6-filter.nft
# $NFT add rule ip6 filter input icmpv6 type nd-neighbor-solicit $NFT_ACCEPT
# $NFT add rule ip6 filter input icmpv6 type nd-router-advert $NFT_ACCEPT
message "Stopping Firewall"
}
forgive() {
IP=($(grep -vi $MY_IP $TMP_BLOCK | sort -u))
echo $IP
for i in "${IP[@]}"; do
HANDLE=$(nft -n -a list ruleset | grep $i | grep handle | cut -d '#' -f2 | cut -d ' ' -f3)
echo "Removing: $i Handle: $HANDLE"
echo $NFT delete rule ip filter input handle $HANDLE
$NFT delete rule ip filter input handle $HANDLE
done
echo "Clearing old $TMP_BLOCK"
echo >$TMP_BLOCK
}
saved-attackers() {
echo
IP=($(cat $ATTACKER_LOG | grep -vi $MY_IP | cut -d ' ' -f1 | sort -u))
for i in "${IP[@]}"; do
CHECK=$(cat $NFT_CACHE | grep $i)
if [ "$CHECK" = "" ]; then
echo "Blocking IP: $i"
logger "Blocking IP: $i"
$NFT add rule ip filter input ip saddr $i $NFT_DROP
else
echo
echo "Skipping Duplicate IP $i"
echo
fi
done
}
module-go() {
GO_SPAM=$(grep $2 $NGINX_ACCESS | grep -E "Go-http-client" | wc -l)
if [[ "$GO_SPAM" -gt 20 ]]; then
$NFT add rule ip filter input position 8 ip saddr "$1" $NFT_DROP
echo $1 >>$TMP_BLOCK
message "Go Spam Attack!"
fi
}
module-get-spam() {
GET_SPAM=$(grep $2 $NGINX_ACCESS | grep -E "GET / HTTP" | wc -l)
if [[ "$GET_SPAM" -gt 20 ]]; then
$NFT add rule ip filter input position 8 ip saddr "$1" $NFT_DROP
echo $1 >>$TMP_BLOCK
message "GET Spam Attack!"
fi
}
module-php() {
PHP_SPAM=$(grep $2 $NGINX_ACCESS | grep -E "defaults.php|config.php|upgrade.php|plugins.php|xmrlpc|cgi-bin|wp-content|wp-admin|wp-includes" | wc -l)
if [[ "$PHP_SPAM" -gt 2 ]]; then
$NFT add rule ip filter input position 8 ip saddr "$1" $NFT_DROP
echo $1 >>$TMP_BLOCK
message "Wordpress Attack!"
fi
}
module-lightning() {
LN_SPAM=$(grep $2 $NGINX_ACCESS | grep "lnurlp/verita84" | wc -l)
if [[ "$LN_SPAM" -gt 5 ]]; then
$NFT add rule ip filter input position 8 ip saddr "$1" $NFT_DROP
message "Lightning Spam Attack!"
echo $1 >>$TMP_BLOCK
fi
}
message() {
BOT_ACCOUNT="blockbot@detroitriotcity.com"
echo "$1" | /root/go/bin/algia dm-post -u 33c74427f3b2b73d5e38f3e6c991c122a55d204072356f71da49a0e209fb6940 --stdin
}
watch() {
DATE="$(date +%d/%b/%Y:%H:%M -d '1 min ago')"
echo "Scanning $DATE"
echo
IP=($(grep $DATE $NGINX_ACCESS | grep -Evi -f $CRAWLER_DB | grep -Evi -f $SAFE_TRAFFIC | grep -vi $MY_IP | grep -vi '127.0.0.1' | cut -d ' ' -f1 | sort -u))
for i in "${IP[@]}"; do
module-lightning "$i" "$DATE"
module-php "$i" "$DATE"
module-go "$i" "$DATE"
module-get-spam "$i" "$DATE"
COUNT=$(grep $DATE $NGINX_ACCESS | grep $i | grep -Evi -f $SAFE_TRAFFIC | wc -l)
CHECK=$(cat $NFT_CACHE | sort -u | grep $i)
if [[ "$COUNT" -gt $ATTACK_THRESHOLD ]]; then
echo "Danger!"
echo "$IP $CHECK $COUNT"
if [ "$CHECK" = "" ]; then
echo "Blocking IP: $i Count: $COUNT"
logger "Blocking IP: $i with a count of: $COUNT"
echo $i >>$TMP_BLOCK
$NFT add rule ip filter input position 8 ip saddr $i $NFT_DROP
message "Blocking IP: $i with a count of: $COUNT"
else
echo
echo "Skipping Duplicate IP"
echo
fi
else
echo
echo "$i count: $COUNT below Threshhold: $ATTACK_THRESHOLD"
echo
fi
done
}
test-bots() {
TEST=($(cat $SAVED_BOTS))
for i in "${TEST[@]}"; do
DATA=$(grep $i $NGINX_ACCESS | grep -Evi -f $CRAWLER_DB)
if [ "$DATA" = "" ]; then
echo "No Data. Probably OK"
else
echo $DATA
echo
read -p 'Press Enter to Continue ' -e
fi
done
}
menu() {
clear
echo
echo $MENU_TOP
echo "1. Start"
echo "2. Stop"
echo "3. Reseearch"
echo "4. Forgive"
echo "5. Status"
echo "6. Live Traffic"
echo "7. Test Bot Search Rules"
echo "0. Quit"
echo $MENU_BOTTOM
echo
read -p 'Choice: ' CHOICE
echo
if [ "$CHOICE" = "1" ]; then
echo
echo "Starting Firewall"
start
read -p 'Press Enter to Continue ' -e-
elif [ "$CHOICE" = "2" ]; then
echo
echo "Stopping Firewall"
stop
read -p 'Press Enter to Continue ' -e
elif [ "$CHOICE" = "3" ]; then
research
read -p 'Press Enter to Continue ' -e
elif [ "$CHOICE" = "4" ]; then
forgive
elif [ "$CHOICE" = "5" ]; then
status
read -p 'Press Enter to Continue ' -e
elif [ "$CHOICE" = "6" ]; then
tail -f $NGINX_ACCESS | grep -Evi -f $SAFE_TRAFFIC | grep -Evi -f $CRAWLER_DB
read -p 'Press Enter to Continue ' -e
elif [ "$CHOICE" = "7" ]; then
test-bots
read -p 'Press Enter to Continue ' -e
elif [ "$CHOICE" = "0" ]; then
exit
fi
echo
menu
}
if [ "$1" = "start" ]; then
start
elif [ "$1" = "virt" ]; then
virtualization
elif [ "$1" = "bot-search" ]; then
bot-search
elif [ "$1" = "attacker-protection" ]; then
attacker-protection
elif [ "$1" = "country" ]; then
blockCountry
elif [ "$1" = "status" ]; then
automaticStatus
elif [ "$1" = "forgive" ]; then
forgive
elif [ "$1" = "watch" ]; then
watch
elif [ "$1" = "research" ]; then
research
elif [ "$1" = "stop" ]; then
stop
elif [ "$1" = "message" ]; then
message $2
elif [ "$1" = "test" ]; then
test-bots
elif [ "$1" = "saved" ]; then
saved-bots
else
menu
fi