248 lines
8.1 KiB
Plaintext
Executable File
248 lines
8.1 KiB
Plaintext
Executable File
# I'm trying to make this config as simple as possible. Comment out
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# options you don't want to use, uncomment them to use them.
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# Don't forget to rename this file to 'options'!
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# Config file version. Don't change this. Will be used some day to
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# figure out if we need to alert the user that they need to redo their
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# config file.
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CONFIG_VERSION=0.9
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# This is for testing purposes.
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IPTABLES=/bin/true
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IP6TABLES=/bin/true
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# Uncomment below to actually activate firewall
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#IPTABLES=/sbin/iptables
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#IP6TABLES=/sbin/ip6tables
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# This is important for loading kernel modules
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MODPROBE=/sbin/modprobe
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# Extra modules to load such as ftp connection tracking
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#MODULES_LOAD="nf_conntrack_ftp nf_conntrack_h323 nf_conntrack_irc nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_proto_sctp nf_conntrack_proto_udplite nf_conntrack_sip nf_conntrack_tftp nf_conntrack_sane"
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# Run commands before/after rules
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PRERUN="$BASEDIR/conf/prerun"
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POSTRUN="$BASEDIR/conf/postrun"
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# Do we want NAT/Conntrack/Forward features?
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#NAT=1
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#CONNTRACK=1
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#FORWARD=1
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# Use old style state matches or new conntrack matches?
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# By default, lets use conntrack.
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#STATE_TYPE="conntrack"
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# Blocking incoming connections by default?
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#BLOCKINCOMING=1
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# Clamp MSS, useful on DSL/VPN links
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# Space separated list of interfaces to apply this on
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#CLAMPMSS="ppp0 eth0"
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# Default IPv4 policies
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# IPV4_INPUT set to DROP is different from BLOCKINCOMING,
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# as BLOCKINCOMING only blocks syn packets for TCP while still
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# allowing established connections even if connection tracking is off.
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# BLOCKINCOMING does however, deny all incoming UDP just like INPUT=DROP does.
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IPV4_INPUT=ACCEPT
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IPV4_OUTPUT=ACCEPT
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IPV4_FORWARD=DROP
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# Do we run a LAN DHCP server? Put the interfaces here
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# where this server is providing services.
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#LANDHCPSERVER="eth0 eth1"
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# Primary external interface
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# Can be an interface name (ppp0, eth0) or auto
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# which will try to detect the proper interface,
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# but requires a default route to be properly setup
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# first.
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# We recommend manually defining this unless you really
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# need to automagically detect the interface.
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EXTIF="eth0"
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# Primary external IP address
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# Can be an IP address or auto, which will try to detect
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# the primary external IP using the information from EXTIF
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# This is mostly useful for people who have a dynamic external
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# IP address. Everyone else should manually define this to
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# avoid potential detection issues.
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EXTIP="auto"
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# Program/script for finding the default external interface
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# Only used if EXTIF is set to auto
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#
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# If you need to write your own script to find the info, change below
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#EXTIF_FIND="$BASEDIR/bin/get_default_if"
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# Pattern for finding the default external interface IP address
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# Only used if EXTIP is set to auto
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#
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# If you need to write your own script to find the info, change below
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# note that the script passes the interface from $EXTIF as first option
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#EXTIP_FIND="$BASEDIR/bin/get_default_ip"
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# Internal Interface
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#INTINF=ppp+
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# Port forwardings, requires NAT
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#PORTFW=$BASEDIR/conf/port-forwards
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# Multiport support?
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# yes/no/auto (auto will try to detect if we support multiport or not,
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# may not always work but is recommended unless you have a reason otherwise)
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IPTABLES_MULTIPORT=auto
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# Multiport options - use to override defaults
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#NF_MULTIPORT="xt_multiport"
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#NF_MULTIPORT_MAX_PORTS="7"
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# Allow outgoing DNS requests - important if you did not activate connection
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# tracking. Set this to the interfaces you wish to use for outgoing requests
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# plus the IP addresses of your upstream servers (recommended up to 3) if you need to.
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#DNS_REQUESTS_OUT="eth0|4.2.2.1|4.2.2.2|4.2.2.3 eth1"
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# TCP/UDP/Protocol to allow
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TCPPORTS="20 21 22 53 80 113 123 443"
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UDPPORTS="53"
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# common protocols to allow include ipsec, gre, and ipv6
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ALLOWEDPROTO="41 47 50 51"
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# IPs that are allowed to bypass firewall
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TRUSTEDIP="127.0.0.1"
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# Don't track these IPs, useful in some occasions. Don't
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# use otherwise.
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DONTTRACK="127.0.0.1"
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# Intercept IPv4 packets for use in a transparent proxy
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#IPV4_INTERCEPT=$BASEDIR/conf/ipv4-intercept
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# IP range(s) to forward
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#ROUTING=$BASEDIR/conf/ipv4-routing
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# Mark ipv4 packets for advanced purposes
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#IPv4_MARK=$BASEDIR/conf/ipv4-marks
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# IP NAT Rules
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# SNAT:<INT IF>:<INT IP>:<EXT IF>:<EXT IP>
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# MASQ:<INT IF>:<INT IP>:<EXT IF>
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# NETMAP:<INT IF>:<INT IP RANGE>:<EXT IF>:<EXT IP RANGE>
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#NAT_RANGE=""
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# Hacks to either block specific kinds of attacks or fix problems
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#
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# NS-IN-DDOS - Block DNS DDoS using NS/IN spoof, see:
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# http://www.stupendous.net/archives/2009/01/24/dropping-spurious-nsin-recursive-queries/
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#
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# MULTI-NIC-ARP-LOCK - By default, in Linux, arp requests may be answered by interfaces that
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# do not actually have the IP in question. In some (alot in my case),
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# I have things going through specific wires for a reason. This fixes
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# that and makes it behave as expected.
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#
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HACK_IPV4="NS-IN-DDOS"
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# IP NAT Rules
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# SNAT:<INT IF>:<INT IP>:<EXT IF>:<EXT IP>
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# MASQ:<INT IF>:<INT IP>:<EXT IF>
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#NAT_RANGE=
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# IP Ranges to block all traffic incoming/outgoing
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# New functionality in 0.9.8 obsoletes BLOCKTCPPORTS and BLOCKUDPPORTS
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BLOCKEDIP=$BASEDIR/conf/ipv4-blocked
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# Strip ECN off of packets - helps with blackholes
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# Either individual IPs or 0.0.0.0/0
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#STRIPECN="0.0.0.0/0"
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# Block private LAN traffic (RFC reserved space) going OUT on these interfaces
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# for security reasons. This has the potential to cause issues if your
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# provider uses private IP space for uplinks in PPPoE/PPPoA, so don't use it
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# and use BLOCK_INCOMING_RFC1981 instead.
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#BLOCK_OUTGOING_RFC1918="ppp0"
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# Block private LAN traffic (RFC reserved space) coming IN on these interfaces
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# for security reasons. This is a bit more safer to use if your provider uses
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# private IP space for the other end of PPP links.
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#BLOCK_INCOMING_RFC1918="ppp0"
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# RFC1918 Space override, don't change or uncomment this unless you absolutely need to
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#RFC1918_SPACE="192.168.0.0/16 172.16.0.0/12 10.0.0.0/8"
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# IPv6 related features. Commenting out IPV6 variable disables ALL
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# IPv6 related items
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#IPV6=1
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# Do we want IPv6 FORWARD and Connection tracking features?
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#IPV6_FORWARD=1
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#IPV6_CONNTRACK=1
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# Default IPv6 policies
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# IPV6_INPUT set to DROP is different from IPV6_BLOCKINCOMING,
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# as BLOCKINCOMING only blocks syn packets for TCP while still
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# allowing established connections even if connection tracking is off.
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# BLOCKINCOMING does however, deny all incoming UDP just like INPUT=DROP does.
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IPV6_INPUT=ALLOW
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IPV6_OUTPUT=ALLOW
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IPV6_FORWARD=DROP
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# Allow outgoing DNS requests - important if you did not activate connection
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# tracking. Set this to the interfaces you wish to use for outgoing requests
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# plus the IP addresses of your upstream servers (recommended up to 3) if you need to.
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#IPV6_DNS_REQUESTS_OUT="eth0|2001::1|2001::2|2001::3 eth1"
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# Default block all incoming ipv6 connections?
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#IPV6_BLOCKINCOMING=1
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# Special case for routers that have ipv6 clients behind them.
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# Useful if clients do not have proper ipv6 firewalls. Give list
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# of IPv6 netblocks to enable this on.
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#IPV6_ROUTEDCLIENTBLOCK=""
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# IP range(s) to forward
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#IPV6_ROUTING=$BASEDIR/conf/ipv6-routing
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# Mark ipv6 packets for advanced purposes
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#IPV6_MARK=$BASEDIR/conf/ipv6-marks
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# IPv6 Ranges to block all traffic incoming/outgoing
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#IPV6_BLOCKEDIP=$BASEDIR/conf/ipv6-blocked
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# Clamp MSS, useful on DSL/VPN links
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# Space separated list of interfaces to apply this on
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# it may be used eventually.
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#IPV6_CLAMPMSS="he-ipv6"
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# Interface IPv6 comes in on (either tunnel or real network interface)
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#IPV6_INT=he-ipv6
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# LAN interface for IPv6
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#IPV6_LAN=eth1
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# Trusted IPv6 ranges
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#IPV6_TRUSTED="::1"
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# Allowed incoming IPv6 ports (for now, use $TCPPORTS and $UDPPORTS to
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# have same for both ipv4 and ipv6)
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#IPV6_TCPPORTS=$TCPPORTS
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#IPV6_UDPPORTS=$UDPPORTS
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# IPv6 range to forward
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#IPV6_FORWARDRANGE=""
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# Allow critical ICMP messages to go through, such as packet too big.
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# You should _really_ make sure you don't disable this if you have any
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# kind of MTU changes inside or outside your network.
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# Allows: time-exceeded packet-too-big
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IPV6_ICMP_CRITICAL=1
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# Allow other common IPV6 ICMP messages through the firewall. Though not
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# really critical, these can help with general IPv6 usage/diagnostic
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# Allows: destination-unreachable parameter-problem
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#IPV6_ICMP_OPT=1 |