first commit

etc_org/ufw/after.init

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+#!/bin/sh
+#
+# after.init: if executable, called by ufw-init. See 'man ufw-framework' for
+#             details. Note that output from these scripts is not seen via the
+#             the ufw command, but instead via ufw-init.
+#
+# Copyright 2013 Canonical Ltd.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3,
+#    as published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+set -e
+
+case "$1" in
+start)
+    # typically required
+    ;;
+stop)
+    # typically required
+    ;;
+status)
+    # optional
+    ;;
+flush-all)
+    # optional
+    ;;
+*)
+    echo "'$1' not supported"
+    echo "Usage: after.init {start|stop|flush-all|status}"
+    ;;
+esac

etc_org/ufw/after.rules

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+#
+# rules.input-after
+#
+# Rules that should be run after the ufw command line added rules. Custom
+# rules should be added to one of these chains:
+#   ufw-after-input
+#   ufw-after-output
+#   ufw-after-forward
+#
+
+# Don't delete these required lines, otherwise there will be errors
+*filter
+:ufw-after-input - [0:0]
+:ufw-after-output - [0:0]
+:ufw-after-forward - [0:0]
+# End required lines
+
+# don't log noisy services by default
+-A ufw-after-input -p udp --dport 137 -j ufw-skip-to-policy-input
+-A ufw-after-input -p udp --dport 138 -j ufw-skip-to-policy-input
+-A ufw-after-input -p tcp --dport 139 -j ufw-skip-to-policy-input
+-A ufw-after-input -p tcp --dport 445 -j ufw-skip-to-policy-input
+-A ufw-after-input -p udp --dport 67 -j ufw-skip-to-policy-input
+-A ufw-after-input -p udp --dport 68 -j ufw-skip-to-policy-input
+
+# don't log noisy broadcast
+-A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-to-policy-input
+
+# don't delete the 'COMMIT' line or these rules won't be processed
+COMMIT

etc_org/ufw/after6.rules

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+#
+# rules.input-after
+#
+# Rules that should be run after the ufw command line added rules. Custom
+# rules should be added to one of these chains:
+#   ufw6-after-input
+#   ufw6-after-output
+#   ufw6-after-forward
+#
+
+# Don't delete these required lines, otherwise there will be errors
+*filter
+:ufw6-after-input - [0:0]
+:ufw6-after-output - [0:0]
+:ufw6-after-forward - [0:0]
+# End required lines
+
+# don't log noisy services by default
+-A ufw6-after-input -p udp --dport 137 -j ufw6-skip-to-policy-input
+-A ufw6-after-input -p udp --dport 138 -j ufw6-skip-to-policy-input
+-A ufw6-after-input -p tcp --dport 139 -j ufw6-skip-to-policy-input
+-A ufw6-after-input -p tcp --dport 445 -j ufw6-skip-to-policy-input
+-A ufw6-after-input -p udp --dport 546 -j ufw6-skip-to-policy-input
+-A ufw6-after-input -p udp --dport 547 -j ufw6-skip-to-policy-input
+
+# don't delete the 'COMMIT' line or these rules won't be processed
+COMMIT

etc_org/ufw/applications.d/cups

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+[CUPS]
+title=Common UNIX Printing System server
+description=CUPS is a printing system with support for IPP, samba, lpd, and other protocols.
+ports=631
+

etc_org/ufw/applications.d/openssh-server

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+[OpenSSH]
+title=Secure shell server, an rshd replacement
+description=OpenSSH is a free implementation of the Secure Shell protocol.
+ports=22/tcp

etc_org/ufw/before.init

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+#!/bin/sh
+#
+# before.init: if executable, called by ufw-init. See 'man ufw-framework' for
+#              details. Note that output from these scripts is not seen via the
+#              the ufw command, but instead via ufw-init.
+#
+# Copyright 2013 Canonical Ltd.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License version 3,
+#    as published by the Free Software Foundation.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+set -e
+
+case "$1" in
+start)
+    # typically required
+    ;;
+stop)
+    # typically required
+    ;;
+status)
+    # optional
+    ;;
+flush-all)
+    # optional
+    ;;
+*)
+    echo "'$1' not supported"
+    echo "Usage: before.init {start|stop|flush-all|status}"
+    ;;
+esac

etc_org/ufw/before.rules

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+#
+# rules.before
+#
+# Rules that should be run before the ufw command line added rules. Custom
+# rules should be added to one of these chains:
+#   ufw-before-input
+#   ufw-before-output
+#   ufw-before-forward
+#
+
+# Don't delete these required lines, otherwise there will be errors
+*filter
+:ufw-before-input - [0:0]
+:ufw-before-output - [0:0]
+:ufw-before-forward - [0:0]
+:ufw-not-local - [0:0]
+# End required lines
+
+
+# allow all on loopback
+-A ufw-before-input -i lo -j ACCEPT
+-A ufw-before-output -o lo -j ACCEPT
+
+# quickly process packets for which we already have a connection
+-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+
+# drop INVALID packets (logs these in loglevel medium and higher)
+-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
+-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
+
+# ok icmp codes for INPUT
+-A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT
+-A ufw-before-input -p icmp --icmp-type source-quench -j ACCEPT
+-A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT
+-A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT
+-A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT
+
+# ok icmp code for FORWARD
+-A ufw-before-forward -p icmp --icmp-type destination-unreachable -j ACCEPT
+-A ufw-before-forward -p icmp --icmp-type source-quench -j ACCEPT
+-A ufw-before-forward -p icmp --icmp-type time-exceeded -j ACCEPT
+-A ufw-before-forward -p icmp --icmp-type parameter-problem -j ACCEPT
+-A ufw-before-forward -p icmp --icmp-type echo-request -j ACCEPT
+
+# allow dhcp client to work
+-A ufw-before-input -p udp --sport 67 --dport 68 -j ACCEPT
+
+#
+# ufw-not-local
+#
+-A ufw-before-input -j ufw-not-local
+
+# if LOCAL, RETURN
+-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
+
+# if MULTICAST, RETURN
+-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
+
+# if BROADCAST, RETURN
+-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
+
+# all other non-local packets are dropped
+-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
+-A ufw-not-local -j DROP
+
+# allow MULTICAST mDNS for service discovery (be sure the MULTICAST line above
+# is uncommented)
+-A ufw-before-input -p udp -d 224.0.0.251 --dport 5353 -j ACCEPT
+
+# allow MULTICAST UPnP for service discovery (be sure the MULTICAST line above
+# is uncommented)
+-A ufw-before-input -p udp -d 239.255.255.250 --dport 1900 -j ACCEPT
+
+# don't delete the 'COMMIT' line or these rules won't be processed
+COMMIT

etc_org/ufw/before6.rules

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+#
+# rules.before
+#
+# Rules that should be run before the ufw command line added rules. Custom
+# rules should be added to one of these chains:
+#   ufw6-before-input
+#   ufw6-before-output
+#   ufw6-before-forward
+#
+
+# Don't delete these required lines, otherwise there will be errors
+*filter
+:ufw6-before-input - [0:0]
+:ufw6-before-output - [0:0]
+:ufw6-before-forward - [0:0]
+# End required lines
+
+
+# allow all on loopback
+-A ufw6-before-input -i lo -j ACCEPT
+-A ufw6-before-output -o lo -j ACCEPT
+
+# drop packets with RH0 headers
+-A ufw6-before-input -m rt --rt-type 0 -j DROP
+-A ufw6-before-forward -m rt --rt-type 0 -j DROP
+-A ufw6-before-output -m rt --rt-type 0 -j DROP
+
+# quickly process packets for which we already have a connection
+-A ufw6-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A ufw6-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+-A ufw6-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+
+# drop INVALID packets (logs these in loglevel medium and higher)
+-A ufw6-before-input -m conntrack --ctstate INVALID -j ufw6-logging-deny
+-A ufw6-before-input -m conntrack --ctstate INVALID -j DROP
+
+# ok icmp codes for INPUT (rfc4890, 4.4.1 and 4.4.2)
+-A ufw6-before-input -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
+# codes 0 and 1
+-A ufw6-before-input -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
+# codes 0-2
+-A ufw6-before-input -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type echo-request -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT
+# IND solicitation
+-A ufw6-before-input -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT
+# IND advertisement
+-A ufw6-before-input -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT
+# MLD query
+-A ufw6-before-input -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT
+# MLD report
+-A ufw6-before-input -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT
+# MLD done
+-A ufw6-before-input -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT
+# MLD report v2
+-A ufw6-before-input -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT
+# SEND certificate path solicitation
+-A ufw6-before-input -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT
+# SEND certificate path advertisement
+-A ufw6-before-input -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT
+# MR advertisement
+-A ufw6-before-input -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+# MR solicitation
+-A ufw6-before-input -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+# MR termination
+-A ufw6-before-input -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+
+# ok icmp codes for OUTPUT (rfc4890, 4.4.1 and 4.4.2)
+-A ufw6-before-output -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
+-A ufw6-before-output -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
+# codes 0 and 1
+-A ufw6-before-output -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
+# codes 0-2
+-A ufw6-before-output -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type echo-request -j ACCEPT
+-A ufw6-before-input -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
+-A ufw6-before-output -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT
+-A ufw6-before-output -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT
+# IND solicitation
+-A ufw6-before-output -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT
+# IND advertisement
+-A ufw6-before-output -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT
+# MLD query
+-A ufw6-before-output -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT
+# MLD report
+-A ufw6-before-output -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT
+# MLD done
+-A ufw6-before-output -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT
+# MLD report v2
+-A ufw6-before-output -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT
+# SEND certificate path solicitation
+-A ufw6-before-output -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT
+# SEND certificate path advertisement
+-A ufw6-before-output -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT
+# MR advertisement
+-A ufw6-before-output -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+# MR solicitation
+-A ufw6-before-output -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+# MR termination
+-A ufw6-before-output -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT
+
+# ok icmp codes for FORWARD (rfc4890, 4.3.1)
+-A ufw6-before-forward -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
+-A ufw6-before-forward -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
+# codes 0 and 1
+-A ufw6-before-forward -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
+# codes 0-2
+-A ufw6-before-forward -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
+-A ufw6-before-forward -p icmpv6 --icmpv6-type echo-request -j ACCEPT
+-A ufw6-before-forward -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
+# ok icmp codes for FORWARD (rfc4890, 4.3.2)
+# Home Agent Address Discovery Reques
+-A ufw6-before-input -p icmpv6 --icmpv6-type 144 -j ACCEPT
+# Home Agent Address Discovery Reply
+-A ufw6-before-input -p icmpv6 --icmpv6-type 145 -j ACCEPT
+# Mobile Prefix Solicitation
+-A ufw6-before-input -p icmpv6 --icmpv6-type 146 -j ACCEPT
+# Mobile Prefix Advertisement
+-A ufw6-before-input -p icmpv6 --icmpv6-type 147 -j ACCEPT
+
+# allow dhcp client to work
+-A ufw6-before-input -p udp -s fe80::/10 --sport 547 -d fe80::/10 --dport 546 -j ACCEPT
+
+# allow MULTICAST mDNS for service discovery
+-A ufw6-before-input -p udp -d ff02::fb --dport 5353 -j ACCEPT
+
+# allow MULTICAST UPnP for service discovery
+-A ufw6-before-input -p udp -d ff02::f --dport 1900 -j ACCEPT
+
+# don't delete the 'COMMIT' line or these rules won't be processed
+COMMIT

etc_org/ufw/sysctl.conf

@@ -0,0 +1,57 @@
+#
+# Configuration file for setting network variables. Please note these settings
+# override /etc/sysctl.conf. If you prefer to use /etc/sysctl.conf, please
+# adjust IPT_SYSCTL in /etc/default/ufw.
+#
+
+# Uncomment this to allow this host to route packets between interfaces
+#net/ipv4/ip_forward=1
+#net/ipv6/conf/default/forwarding=1
+#net/ipv6/conf/all/forwarding=1
+
+# Turn on Source Address Verification in all interfaces to prevent some
+# spoofing attacks
+net/ipv4/conf/default/rp_filter=1
+net/ipv4/conf/all/rp_filter=1
+
+# Do not accept IP source route packets (we are not a router)
+net/ipv4/conf/default/accept_source_route=0
+net/ipv4/conf/all/accept_source_route=0
+net/ipv6/conf/default/accept_source_route=0
+net/ipv6/conf/all/accept_source_route=0
+
+# Disable ICMP redirects. ICMP redirects are rarely used but can be used in
+# MITM (man-in-the-middle) attacks. Disabling ICMP may disrupt legitimate
+# traffic to those sites.
+net/ipv4/conf/default/accept_redirects=0
+net/ipv4/conf/all/accept_redirects=0
+net/ipv6/conf/default/accept_redirects=0
+net/ipv6/conf/all/accept_redirects=0
+
+# Ignore bogus ICMP errors
+net/ipv4/icmp_echo_ignore_broadcasts=1
+net/ipv4/icmp_ignore_bogus_error_responses=1
+net/ipv4/icmp_echo_ignore_all=0
+
+# Don't log Martian Packets (impossible packets)
+net/ipv4/conf/default/log_martians=0
+net/ipv4/conf/all/log_martians=0
+
+# Change to '1' to enable TCP/IP SYN cookies This disables TCP Window Scaling
+# (http://lkml.org/lkml/2008/2/5/167)
+net/ipv4/tcp_syncookies=0
+
+#net/ipv4/tcp_fin_timeout=30
+#net/ipv4/tcp_keepalive_intvl=1800
+
+# normally allowing tcp_sack is ok, but if going through OpenBSD 3.8 RELEASE or
+# earlier pf firewall, should set this to 0
+net/ipv4/tcp_sack=1
+
+# Uncomment this to turn off ipv6 autoconfiguration
+#net/ipv6/conf/default/autoconf=0
+#net/ipv6/conf/all/autoconf=0
+
+# Uncomment this to enable ipv6 privacy addressing
+#net/ipv6/conf/default/use_tempaddr=2
+#net/ipv6/conf/all/use_tempaddr=2

etc_org/ufw/ufw.conf

@@ -0,0 +1,10 @@
+# /etc/ufw/ufw.conf
+#
+
+# Set to yes to start on boot. If setting this remotely, be sure to add a rule
+# to allow your remote connection before starting ufw. Eg: 'ufw allow 22/tcp'
+ENABLED=no
+
+# Please use the 'ufw' command to set the loglevel. Eg: 'ufw logging medium'.
+# See 'man ufw' for details.
+LOGLEVEL=low

etc_org/ufw/user.rules

@@ -0,0 +1,11 @@
+*filter
+:ufw-user-input - [0:0]
+:ufw-user-output - [0:0]
+:ufw-user-forward - [0:0]
+:ufw-user-limit - [0:0]
+:ufw-user-limit-accept - [0:0]
+### RULES ###
+-A ufw-user-limit -m limit --limit 3/minute -j LOG --log-prefix "[UFW LIMIT BLOCK] "
+-A ufw-user-limit -j REJECT
+-A ufw-user-limit-accept -j ACCEPT
+COMMIT

etc_org/ufw/user6.rules

@@ -0,0 +1,6 @@
+*filter
+:ufw6-user-input - [0:0]
+:ufw6-user-output - [0:0]
+:ufw6-user-forward - [0:0]
+### RULES ###
+COMMIT