initial working router
This commit is contained in:
parent
14f47abc67
commit
ce2a1ecb0f
3 changed files with 303 additions and 47 deletions
333
frankenrouter.py
333
frankenrouter.py
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@ -1,18 +1,284 @@
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# frankenrouter.py by afx (c) 2018 deflax.net [42/9073]
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# frankenrouter.py by afx (c) 2018 deflax.net
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import subprocess
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import requests
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import json
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import datetime
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import os
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dburl = 'https://www.datapoint.bg/vmanager/slavetables/1'
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clientiface = 'ens19'
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workscriptpath = '/root/fr-workscripts/'
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###
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def writefile(filename, data):
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wr = open(filename, 'w')
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wr.write(data)
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wr.close()
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def bashexec(workfile, data):
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today = int(datetime.datetime.now().strftime("%s")) * 1000
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script = """
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#!/bin/bash
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#
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# {0} generated at {1}
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#
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IPT="/sbin/iptables"
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SYSCTL="/sbin/sysctl -w"
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# Internet Interface
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INET_IFACE="ens18"
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INET_ORB="87.120.110.11"
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# Localhost Interface
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LO_IFACE="lo"
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LO_IP="127.0.0.1"
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{2}""".format(workfile, today, data)
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filename = os.path.join(workscriptpath, workfile + '.sh')
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prevfile = os.path.join(workscriptpath, workfile + '-{}'.format(today) + '.bak')
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subprocess.call('mv {0} {1}'.format(filename, prevfile), shell=True)
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writefile(filename, script)
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subprocess.call('chmod +x {}'.format(filename), shell=True)
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subprocess.call('{}'.format(filename), shell=True)
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def initfw():
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data = """
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echo "Loading kernel modules ..."
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/sbin/modprobe ip_tables
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/sbin/modprobe ip_conntrack
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# /sbin/modprobe iptable_filter
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# /sbin/modprobe iptable_mangle
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# /sbin/modprobe iptable_nat
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# /sbin/modprobe ipt_LOG
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# /sbin/modprobe ipt_limit
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# /sbin/modprobe ipt_MASQUERADE
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# /sbin/modprobe ipt_owner
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# /sbin/modprobe ipt_REJECT
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# /sbin/modprobe ipt_mark
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# /sbin/modprobe ipt_tcpmss
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# /sbin/modprobe multiport
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# /sbin/modprobe ipt_state
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# /sbin/modprobe ipt_unclean
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/sbin/modprobe ip_nat_ftp
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/sbin/modprobe ip_conntrack_ftp
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/sbin/modprobe ip_conntrack_irc
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if [ "$SYSCTL" = "" ]
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then
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echo "1" > /proc/sys/net/ipv4/ip_forward
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else
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$SYSCTL net.ipv4.ip_forward="1"
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fi
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if [ "$SYSCTL" = "" ]
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then
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echo "1" > /proc/sys/net/ipv4/tcp_syncookies
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else
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$SYSCTL net.ipv4.tcp_syncookies="1"
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fi
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if [ "$SYSCTL" = "" ]
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then
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echo "1" > /proc/sys/net/ipv4/conf/all/rp_filter
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else
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$SYSCTL net.ipv4.conf.all.rp_filter="1"
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fi
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if [ "$SYSCTL" = "" ]
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then
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echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
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else
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$SYSCTL net.ipv4.icmp_echo_ignore_broadcasts="1"
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fi
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if [ "$SYSCTL" = "" ]
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then
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echo "0" > /proc/sys/net/ipv4/conf/all/accept_source_route
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else
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$SYSCTL net.ipv4.conf.all.accept_source_route="0"
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fi
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if [ "$SYSCTL" = "" ]
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then
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echo "1" > /proc/sys/net/ipv4/conf/all/secure_redirects
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else
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$SYSCTL net.ipv4.conf.all.secure_redirects="1"
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fi
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#if [ "$SYSCTL" = "" ]
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#then
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# echo "1" > /proc/sys/net/ipv4/conf/all/log_martians
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#else
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# $SYSCTL net.ipv4.conf.all.log_martians="1"
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#fi
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echo "Flushing Tables ..."
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# Reset Default Policies
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$IPT -P INPUT ACCEPT
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$IPT -P FORWARD ACCEPT
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$IPT -P OUTPUT ACCEPT
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$IPT -t nat -P PREROUTING ACCEPT
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$IPT -t nat -P POSTROUTING ACCEPT
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$IPT -t nat -P OUTPUT ACCEPT
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$IPT -t mangle -P PREROUTING ACCEPT
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$IPT -t mangle -P OUTPUT ACCEPT
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$IPT -F
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$IPT -t nat -F
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$IPT -t mangle -F
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$IPT -X
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$IPT -t nat -X
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$IPT -t mangle -X
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if [ "$1" = "stop" ]
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then
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echo "Firewall completely flushed! Now running with no firewall."
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exit 0
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fi
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$IPT -P INPUT DROP
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$IPT -P OUTPUT DROP
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$IPT -P FORWARD DROP
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$IPT -N bad_packets
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$IPT -N bad_tcp_packets
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$IPT -N icmp_packets
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$IPT -N udp_inbound
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$IPT -N udp_outbound
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$IPT -N tcp_inbound
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$IPT -N tcp_outbound
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#DEFAULT
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#$IPT -A bad_packets -p ALL -i $INET_IFACE -s $LOCAL_NET -j LOG --log-prefix "fp=bad_packets:2 a=DROP "
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#$IPT -A bad_packets -p ALL -i $INET_IFACE -s $LOCAL_NET -j DROP
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#$IPT -A bad_packets -p ALL -m state --state INVALID -j LOG --log-prefix "fp=bad_packets:1 a=DROP "
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$IPT -A bad_packets -p ALL -m state --state INVALID -j DROP
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$IPT -A bad_packets -p tcp -j bad_tcp_packets
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$IPT -A bad_packets -p ALL -j RETURN
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#$IPT -A bad_tcp_packets -p tcp -i $LOCAL_IFACE -j RETURN
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#$IPT -A bad_tcp_packets -p tcp ! --syn -m state --state NEW -j LOG --log-prefix "fp=bad_tcp_packets:1 a=DROP "
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$IPT -A bad_tcp_packets -p tcp ! --syn -m state --state NEW -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL NONE -j LOG --log-prefix "fp=bad_tcp_packets:2 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL NONE -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL ALL -j LOG --log-prefix "fp=bad_tcp_packets:3 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL ALL -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL FIN,URG,PSH -j LOG --log-prefix "fp=bad_tcp_packets:4 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL FIN,URG,PSH -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j LOG --log-prefix "fp=bad_tcp_packets:5 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,RST SYN,RST -j LOG --log-prefix "fp=bad_tcp_packets:6 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
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#$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,FIN SYN,FIN -j LOG --log-prefix "fp=bad_tcp_packets:7 a=DROP "
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$IPT -A bad_tcp_packets -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
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$IPT -A bad_tcp_packets -p tcp -j RETURN
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### ICMP
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#$IPT -A icmp_packets --fragment -p ICMP -j LOG --log-prefix "fp=icmp_packets:1 a=DROP "
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#$IPT -A icmp_packets --fragment -p ICMP -j DROP
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#$IPT -A icmp_packets -p ICMP -s 0/0 --icmp-type 8 -j DROP
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#$IPT -A icmp_packets -p ICMP -s 0/0 --icmp-type 11 -j ACCEPT
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#$IPT -A icmp_packets -p ICMP -j RETURN
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$IPT -A icmp_packets -p ICMP -j ACCEPT
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#LOCAL
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$IPT -A udp_inbound -p UDP -s 0/0 --destination-port 137 -j DROP
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$IPT -A udp_inbound -p UDP -s 0/0 --destination-port 138 -j DROP
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$IPT -A udp_inbound -p UDP -s 0/0 --source-port 67 --destination-port 68 -j ACCEPT
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$IPT -A udp_inbound -p UDP -s 0/0 --destination-port 53 -j ACCEPT
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$IPT -A udp_inbound -p UDP -j RETURN
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$IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 60022 -j ACCEPT
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$IPT -A tcp_inbound -p TCP -j RETURN
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$IPT -A udp_outbound -p UDP -s 0/0 -j ACCEPT
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$IPT -A tcp_outbound -p TCP -s 0/0 -j ACCEPT
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###############################################################################
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echo "Process INPUT chain ..."
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$IPT -A INPUT -p ALL -i $LO_IFACE -j ACCEPT
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$IPT -A INPUT -p ALL -j bad_packets
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#INPUT index: 3
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$IPT -A INPUT -p ALL -i $INET_IFACE -m state --state ESTABLISHED,RELATED -j ACCEPT
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$IPT -A INPUT -p TCP -i $INET_IFACE -j tcp_inbound
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$IPT -A INPUT -p UDP -i $INET_IFACE -j udp_inbound
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$IPT -A INPUT -p ICMP -i $INET_IFACE -j icmp_packets
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$IPT -A INPUT -m pkttype --pkt-type broadcast -j DROP
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$IPT -A INPUT -j LOG --log-prefix "fp=INPUT:99 a=DROP "
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echo "Process FORWARD chain ..."
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$IPT -A FORWARD -p ALL -j bad_packets
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$IPT -A FORWARD -i $INET_IFACE -j ACCEPT
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#FORWARD index: 3
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$IPT -A FORWARD -j LOG --log-prefix "fp=FORWARD:99 a=DROP "
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echo "Process OUTPUT chain ..."
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#$IPT -A OUTPUT -m state -p icmp --state INVALID -j DROP
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$IPT -A OUTPUT -p ALL -s $LO_IP -j ACCEPT
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$IPT -A OUTPUT -p ALL -o $LO_IFACE -j ACCEPT
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#OUTPUT index: 3
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$IPT -A OUTPUT -p ALL -o $INET_IFACE -j ACCEPT
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$IPT -A OUTPUT -j LOG --log-prefix "fp=OUTPUT:99 a=DROP "
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###############################################################################
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#$IPT -t nat -A POSTROUTING -o $INET_IFACE -j MASQUERADE
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"""
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return data
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def setvlans(clientiface, vlanmin=120, vlanmax=130):
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#vlans
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data = ''
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for vlanid in range(vlanmin, vlanmax, 1):
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dhcpconf_template = """
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#dhcpd.conf autogenerated by frankenrouter
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authoritative;
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default-lease-time 3600;
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max-lease-time 7200;
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ddns-update-style none;
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option subnet-mask 255.255.255.0;
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option domain-name-servers 87.120.110.2, 8.8.8.8;
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#vlan {0}
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host vlan{0}-vm {{
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hardware ethernet 8A:32:CD:E4:EE:11;
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fixed-address 10.0.{0}.10;
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}}
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subnet 10.0.{0}.0 netmask 255.255.255.0 {{
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option routers 10.0.{0}.1;
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range 10.0.{0}.11 10.0.{0}.99;
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}}
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""".format(vlanid)
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writefile('/root/fr-vlanconf/v{0}.dhconf'.format(vlanid), dhcpconf_template)
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data += """
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### VLAN {0}
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echo "setting up vlan: {0}"
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kill -9 `cat /root/fr-vlanconf/v{0}.dhpid`
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rm /root/fr-vlanconf/v{0}.dhpid
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ip link del {1}.{0}
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ip link add link {1} name {1}.{0} type vlan id {0}
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ip link set dev {1}.{0} up
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ip addr add 10.0.{0}.1/24 dev {1}.{0}
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$IPT -I INPUT 3 -p ALL -i {1}.{0} -d 10.0.{0}.255 -j ACCEPT
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$IPT -I INPUT 3 -p ALL -i {1}.{0} -s 10.0.{0}.0/24 -j ACCEPT
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#$IPT -I FORWARD 3 -p ALL -i {1}.{0} -j ACCEPT
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#$IPT -I FORWARD 3 -p ALL -i $INET_IFACE -o {1}.{0} -d 10.0.{0}.10 -m state --state NEW -j ACCEPT
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$IPT -I FORWARD 3 -p ALL -i {1}.{0} -o $INET_IFACE -s 10.0.{0}.10 -j ACCEPT
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$IPT -I OUTPUT 3 -p ALL -o {1}.{0} -j ACCEPT
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touch /root/fr-vlanconf/v{0}.dhpid
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touch /root/fr-vlanconf/v{0}.dhlease
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dhcpd -4 -cf /root/fr-vlanconf/v{0}.dhconf -lf /root/fr-vlanconf/v{0}.dhlease -pf /root/fr-vlanconf/v{0}.dhpid {1}.{0}
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""".format(vlanid, clientiface)
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return data
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def setpubips():
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db_result = requests.get(dburl, headers={"content-type": "application/json"}, ti
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meout=30 )
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db_result = requests.get(dburl, headers={"content-type": "application/json"}, timeout=30 )
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proxjson = db_result.json()
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for key, value in proxjson['addresses'].items():
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pass
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@ -21,47 +287,32 @@ meout=30 )
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#data += 'iptables -P FORWARD -j ACCEPT -i '
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data = """
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ip addr add 87.120.110.43/24 dev $PUBIF label $PUBIF:0
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ip addr add 87.120.110.44/24 dev $PUBIF label $PUBIF:1
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ip addr add 87.120.110.45/24 dev $PUBIF label $PUBIF:2
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"""
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ip link add vtap122 link $INET_IFACE type macvlan
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ip addr add 87.120.110.41/24 dev vtap122
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ip link set dev vtap122 up
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$IPT -t nat -A PREROUTING -d 87.120.110.41 -j DNAT --to-destination 10.0.122.10
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$IPT -t nat -A POSTROUTING -s 10.0.122.10 -j SNAT --to-source 87.120.110.41
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ip link add vtap120 link $INET_IFACE type macvlan
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ip addr add 87.120.110.43/24 dev vtap120
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ip link set dev vtap120 up
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$IPT -t nat -A PREROUTING -d 87.120.110.43 -j DNAT --to-destination 10.0.120.10
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$IPT -t nat -A POSTROUTING -s 10.0.120.10 -j SNAT --to-source 87.120.110.43
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ip link add vtap121 link $INET_IFACE type macvlan
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ip addr add 87.120.110.44/24 dev vtap121
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ip link set dev vtap121 up
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$IPT -t nat -A PREROUTING -d 87.120.110.44 -j DNAT --to-destination 10.0.121.10
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$IPT -t nat -A POSTROUTING -s 10.0.121.10 -j SNAT --to-source 87.120.110.44
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"""
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return data
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def setvlans(vlanmin=101, vlanmax=200, clientiface)
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#vlans
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data = ''
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for vlanid in range(vlanmin, vlanmax, 1):
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data += """
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kill -9 `cat /root/vlanconf/v{0}.dhpid`
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rm /root/vlanconf/v{0}.dhpid
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ip link del {1}.{0}
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ip link add link {1} name {1}.{0} type vlan id {0}
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ip link set dev {1}.{0} up
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ip addr add 10.0.{0}.1/24 dev {1}.{0}
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touch /root/vlanconf/v{0}.dhlease
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dhcpd -4 -cf /root/vlanconf/v{0}.dhconf -lf /root/vlanconf/v{0}.dhlease -pf /root/vl
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anconf/v{0}.dhpid {1}.{0}
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""".format(vlanid, clientiface)
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return data
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def bashexec(workfile, data)
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script = """
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#!/bin/bash
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#
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# {0} generated at {1}
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#
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{2}""".format(workfile, datetime.datetime.now(), data)
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wr = open(workfile, 'w')
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wr.write(data)
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wr.close()
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subprocess.call('chmod +x {}'.format(workfile), shell=True)
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subprocess.call('./{}'.format(workfile), shell=True)
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def routerinit():
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bashexec('globalfwconfig.sh', setglobalfw())
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bashexec('vlanconfig.sh', setvlans())
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bashexec('pubipconfig.sh', setpubips())
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bashexec('fwfconfig', initfw())
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bashexec('vlfconfig', setvlans(clientiface))
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bashexec('ipfconfig', setpubips())
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if __name__ == "__main__":
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routerinit()
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@ -2,8 +2,10 @@
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Description=Slave FW Autostarter
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[Service]
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Type=oneshot
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ExecStart=/root/slavefw.sh
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WorkingDirectory=/root/
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Type=forking
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ExecStart=/bin/bash /root/frankenrouter/slavefw.sh
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KillMode=process
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[Install]
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WantedBy=multi-user.target
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7
slavefw.sh
Normal file → Executable file
7
slavefw.sh
Normal file → Executable file
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@ -1,8 +1,11 @@
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#!/bin/bash
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PUBIF=ens18
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TRANSPORT_IP="1.2.3.252/24"
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TRANSPORT_GW="1.2.3.1"
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TRANSPORT_IP="87.120.110.252/24"
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TRANSPORT_GW="87.120.110.1"
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mkdir -p /root/fr-vlanconf
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mkdir -p /root/fr-workscripts
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ip addr add $TRANSPORT_IP dev $PUBIF
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sleep 5
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