suricata rsyslog

scripts/conf/20-suricata.conf

@@ -0,0 +1,2 @@
+$template SuricataTemplate, "<%PRI%>%syslogtag:1:32%%msg:::sp-if-no-1st-sp%%msg%"
+user.alert /var/log/suricata.log;SuricataTemplate

scripts/install.sh

@@ -102,7 +102,11 @@ source ./scripts/subinstallers/platform.sh
 echo "Setting up firewall (iptables)"
 if [ ! -f "/etc/iptables/rules.v4" ]; then
     echo "Setting iptables rules..."
-    ./scripts/subinstallers/iptables.sh
+    source ./scripts/subinstallers/suricata.sh
+    source ./scripts/subinstallers/iptables.sh
+    source ./scripts/subinstallers/ip6tables.sh
+    #source ./scripts/subinstallers/iptables_docker.sh
+    source ./scripts/subinstallers/iptables_cleanup.sh
 else
     echo "iptables rules exist. Leaving alone."
 fi

scripts/subinstallers/ip6tables.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+set -e
+
+# resetting ip6tables rules
+sudo ip6tables -F
+sudo ip6tables -t nat -F
+sudo ip6tables -X MISTBORN_LOG_DROP 2>/dev/null || true
+sudo ip6tables -X MISTBORN_INT_LOG_DROP 2>/dev/null || true
+
+# ip6tables: log and drop chain (external threats)
+sudo ip6tables -N MISTBORN_LOG_DROP
+sudo ip6tables -A MISTBORN_LOG_DROP -m limit --limit 6/min -j LOG --log-prefix "[Mistborn-IPTables-Dropped]: " --log-level 4
+sudo ip6tables -A MISTBORN_LOG_DROP -j DROP
+
+# ip6tables: log and drop chain (internal threats)
+sudo ip6tables -N MISTBORN_INT_LOG_DROP
+sudo ip6tables -A MISTBORN_INT_LOG_DROP -m limit --limit 6/min -j LOG --log-prefix "[Mistborn-IPTables-Internal-Dropped]: " --log-level 4
+sudo ip6tables -A MISTBORN_INT_LOG_DROP -j DROP
+
+# ip6tables
+echo "Setting ip6tables rules"
+sudo ip6tables -P INPUT ACCEPT
+sudo ip6tables -I INPUT -i lo -j ACCEPT
+sudo ip6tables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+sudo ip6tables -A INPUT -j MISTBORN_LOG_DROP
+
+sudo ip6tables -P INPUT DROP
+sudo ip6tables -P FORWARD DROP
+sudo ip6tables -P OUTPUT ACCEPT
+

scripts/subinstallers/iptables.sh

@@ -4,6 +4,8 @@ set -e
 
 figlet "Mistborn: Configuring Firewall"
 
+source ./scripts/subinstallers/vars.sh
+
 echo "stop iptables wrappers"
 if [ "$DISTRO" == "ubuntu" ]; then
     # Disable UFW
@@ -11,27 +13,27 @@ if [ "$DISTRO" == "ubuntu" ]; then
     sudo systemctl disable ufw || true
 fi
 
-# default interface
-iface=$(ip -o -4 route show to default | egrep -o 'dev [^ ]*' | awk 'NR==1{print $2}')
-
-# real public interface
-riface=$(ip -o -4 route get 1.1.1.1 | egrep -o 'dev [^ ]*' | awk 'NR==1{print $2}')
-
 # resetting iptables
 sudo iptables -F
 sudo iptables -t nat -F
 sudo iptables -X MISTBORN_LOG_DROP 2>/dev/null || true
+sudo iptables -X MISTBORN_INT_LOG_DROP 2>/dev/null || true
 sudo iptables -X MISTBORN_WIREGUARD_INPUT 2>/dev/null || true
 sudo iptables -X MISTBORN_WIREGUARD_FORWARD 2>/dev/null || true
 sudo iptables -X MISTBORN_WIREGUARD_OUTPUT 2>/dev/null || true
 sudo iptables -X MISTBORN_DOCKER_OUTPUT 2>/dev/null || true
 sudo iptables -X MISTBORN_DOCKER_INPUT 2>/dev/null || true
 
-# iptables: log and drop chain
+# iptables: log and drop chain (external threats)
 sudo iptables -N MISTBORN_LOG_DROP
 sudo iptables -A MISTBORN_LOG_DROP -m limit --limit 6/min -j LOG --log-prefix "[Mistborn-IPTables-Dropped]: " --log-level 4
 sudo iptables -A MISTBORN_LOG_DROP -j DROP
 
+# iptables: log and drop chain (internal threats)
+sudo iptables -N MISTBORN_INT_LOG_DROP
+sudo iptables -A MISTBORN_INT_LOG_DROP -m limit --limit 6/min -j LOG --log-prefix "[Mistborn-IPTables-Internal-Dropped]: " --log-level 4
+sudo iptables -A MISTBORN_INT_LOG_DROP -j DROP
+
 # wireguard rules chains
 sudo iptables -N MISTBORN_WIREGUARD_INPUT
 sudo iptables -N MISTBORN_WIREGUARD_FORWARD
@@ -73,54 +75,3 @@ sudo iptables -t nat -I POSTROUTING -o $iface -j MASQUERADE
 #    sudo iptables -t nat -I POSTROUTING -o $riface -j MASQUERADE
 #fi
 
-# resetting ip6tables rules
-sudo ip6tables -F
-sudo ip6tables -t nat -F
-sudo ip6tables -X MISTBORN_LOG_DROP 2>/dev/null || true
-
-# ip6tables: log and drop chain
-sudo ip6tables -N MISTBORN_LOG_DROP
-sudo ip6tables -A MISTBORN_LOG_DROP -m limit --limit 6/min -j LOG --log-prefix "[Mistborn-IPTables-Dropped]: " --log-level 4
-sudo ip6tables -A MISTBORN_LOG_DROP -j DROP
-
-# ip6tables
-echo "Setting ip6tables rules"
-sudo ip6tables -P INPUT ACCEPT
-sudo ip6tables -I INPUT -i lo -j ACCEPT
-sudo ip6tables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-sudo ip6tables -A INPUT -j MISTBORN_LOG_DROP
-
-sudo ip6tables -P INPUT DROP
-sudo ip6tables -P FORWARD DROP
-sudo ip6tables -P OUTPUT ACCEPT
-
-# iptables-persistent
-if [ ! "$(dpkg-query -l iptables-persistent)" ]; then
-    echo "Installing iptables-persistent"
-    
-    # answer variables
-    echo iptables-persistent iptables-persistent/autosave_v4 boolean true | sudo debconf-set-selections
-    echo iptables-persistent iptables-persistent/autosave_v6 boolean true | sudo debconf-set-selections
-    
-    # install
-    sudo -E apt-get install -y iptables-persistent ipset
-else
-    echo "Saving iptables rules"
-    sudo bash -c "iptables-save > /etc/iptables/rules.v4"
-    echo "Saving ip6tables rules"
-    sudo bash -c "ip6tables-save > /etc/iptables/rules.v6"
-fi
-
-# IP forwarding
-sudo sed -i 's/.*net.ipv4.ip_forward.*/net.ipv4.ip_forward=1/' /etc/sysctl.conf
-
-# VM Overcommit Memory
-sudo grep -i "vm.overcommit_memory" /etc/sysctl.conf && sudo sed -i 's/.*vm.overcommit_memory.*/vm.overcommit_memory=1/' /etc/sysctl.conf || echo "vm.overcommit_memory=1" | sudo tee -a /etc/sysctl.conf
-
-# Force re-read of sysctl.conf
-sudo sysctl -p /etc/sysctl.conf
-
-# rsyslog to create /var/log/iptables.log
-sudo cp ./scripts/conf/15-iptables.conf /etc/rsyslog.d/
-sudo chown root:root /etc/rsyslog.d/15-iptables.conf
-sudo systemctl restart rsyslog

scripts/subinstallers/iptables_cleanup.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+# iptables-persistent
+if [ ! "$(dpkg-query -l iptables-persistent)" ]; then
+    echo "Installing iptables-persistent"
+    
+    # answer variables
+    echo iptables-persistent iptables-persistent/autosave_v4 boolean true | sudo debconf-set-selections
+    echo iptables-persistent iptables-persistent/autosave_v6 boolean true | sudo debconf-set-selections
+    
+    # install
+    sudo -E apt-get install -y iptables-persistent ipset
+else
+    echo "Saving iptables rules"
+    sudo bash -c "iptables-save > /etc/iptables/rules.v4"
+    echo "Saving ip6tables rules"
+    sudo bash -c "ip6tables-save > /etc/iptables/rules.v6"
+fi
+
+# IP forwarding
+sudo sed -i 's/.*net.ipv4.ip_forward.*/net.ipv4.ip_forward=1/' /etc/sysctl.conf
+
+# VM Overcommit Memory
+sudo grep -i "vm.overcommit_memory" /etc/sysctl.conf && sudo sed -i 's/.*vm.overcommit_memory.*/vm.overcommit_memory=1/' /etc/sysctl.conf || echo "vm.overcommit_memory=1" | sudo tee -a /etc/sysctl.conf
+
+# Force re-read of sysctl.conf
+sudo sysctl -p /etc/sysctl.conf
+
+# rsyslog to create /var/log/iptables.log
+sudo cp ./scripts/conf/15-iptables.conf /etc/rsyslog.d/
+sudo chown root:root /etc/rsyslog.d/15-iptables.conf
+sudo systemctl restart rsyslog

scripts/subinstallers/iptables_docker.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -e
+
+source ./scripts/subinstallers/vars.sh
+
+# start from scratch
+sudo iptables -X MISTBORN-DOCKER-USER 2>/dev/null || true
+
+sudo iptables -N DOCKER-USER || true
+sudo iptables -N MISTBORN-DOCKER-USER || true
+
+# default Mistborn Docker User chain
+sudo iptables -A MISTBORN-DOCKER-USER -i $iface -s 10.0.0.0/8 -j RETURN
+sudo iptables -A MISTBORN-DOCKER-USER -i $iface -s 172.16.0.0/12 -j RETURN
+sudo iptables -A MISTBORN-DOCKER-USER -i $iface -s 192.168.0.0/16 -j RETURN
+sudo iptables -A MISTBORN-DOCKER-USER -i $iface -j MISTBORN_INT_LOG_DROP
+
+# add chain to DOCKER-USER
+sudo iptables -I DOCKER-USER -j MISTBORN-DOCKER-USER

scripts/subinstallers/platform.sh

@@ -5,13 +5,16 @@
 UNAME=$(uname | tr "[:upper:]" "[:lower:]")
 DISTRO=""
 VERSION_ID=""
+VERSION_CODENAME=""
 # If Linux, try to determine specific distribution
 if [ "$UNAME" == "linux" ]; then
     # use /etc/os-release to get distro 
     DISTRO=$(cat /etc/os-release | awk -F= '/^ID=/{print $2}')
     VERSION_ID=$(cat /etc/os-release | awk -F= '/^VERSION_ID=/{print $2}' | tr -d '"')
+    VERSION_CODENAME=$(cat /etc/os-release | awk -F= '/^VERSION_CODENAME=/{print $2}' | tr -d '"')
 fi
 
 figlet "UNAME: $UNAME"
 figlet "DISTRO: $DISTRO"
 figlet "VERSION: $VERSION_ID"
+figlet "CODENAME: $VERSION_CODENAME"

scripts/subinstallers/suricata.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+set -e
+
+# minimal dependencies
+sudo -E apt-get -y install libpcre3 libpcre3-dbg libpcre3-dev build-essential libpcap-dev   \
+                libyaml-0-2 libyaml-dev pkg-config zlib1g zlib1g-dev \
+                make libmagic-dev libjansson-dev
+
+## recommended dependencies
+#sudo -E apt-get -y install libpcre3 libpcre3-dbg libpcre3-dev build-essential libpcap-dev   \
+#                libnet1-dev libyaml-0-2 libyaml-dev pkg-config zlib1g zlib1g-dev \
+#                libcap-ng-dev libcap-ng0 make libmagic-dev         \
+#                libgeoip-dev liblua5.1-dev libhiredis-dev libevent-dev \
+#                python-yaml rustc cargo
+
+# iptables/nftables integration
+sudo -E apt-get -y install libnetfilter-queue-dev libnetfilter-queue1  \
+                libnetfilter-log-dev libnetfilter-log1      \
+                libnfnetlink-dev libnfnetlink0
+
+
+if [ "$DISTRO" == "ubuntu" ]; then
+    echo "Installing Suricata Ubuntu PPA"
+    sudo -E add-apt-repository -y ppa:oisf/suricata-stable
+    sudo -E apt-get update
+    sudo -E apt-get install -y suricata
+elif [ "$DISTRO" == "debian" ]; then
+    echo "deb http://http.debian.net/debian $VERSION_CODENAME-backports main" | \
+        sudo -E tee -a /etc/apt/sources.list.d/backports.list
+    sudo -E apt-get update
+    sudo -E apt-get install -y suricata -t ${VERSION_CODENAME}-backports
+else
+    echo "Basic Suricata installation"
+    sudo -E apt-get install -y suricata
+fi
+
+# iptables
+sudo iptables -A INPUT -j NFQUEUE
+sudo iptables -I FORWARD -j NFQUEUE
+sudo iptables -I OUTPUT -j NFQUEUE
+
+# rsyslog to create /var/log/suricata.log
+sudo cp ./scripts/conf/20-suricata.conf /etc/rsyslog.d/
+sudo chown root:root /etc/rsyslog.d/20-suricata.conf
+sudo systemctl restart rsyslog

scripts/subinstallers/vars.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+# default interface
+iface=$(ip -o -4 route show to default | egrep -o 'dev [^ ]*' | awk 'NR==1{print $2}')
+
+# real public interface
+riface=$(ip -o -4 route get 1.1.1.1 | egrep -o 'dev [^ ]*' | awk 'NR==1{print $2}')