MiniUPnP project. (c) 2006-2022 Thomas Bernard Homepage : http://miniupnp.free.fr/ Mirror: https://miniupnp.tuxfamily.org/ github: https://github.com/miniupnp/miniupnp If you find some outdated information in this documentation, please fix or report the issue on https://github.com/miniupnp/miniupnp or the web forum https://miniupnp.tuxfamily.org/ ================================ *BSD/pf ================================= To Build and Install : - first use ./configure For more details about options : > ./configure -h then edit config.h to fine tune to your preferences. - use BSD make to compile. - add "rdr-anchor miniupnpd" or/and "anchor miniupnpd" lines to /etc/pf.conf (Since OpenBSD 4.7, rdr-anchor lines are no longer used and should be removed, leaving only the anchor lines). - some FreeBSD users reported that it is also necessary for them to explicitly allow udp traffic on 239.0.0.0/8 by adding the two following lines to /etc/pf.conf : pass out on $int_if from any to 239.0.0.0/8 keep state pass in on $int_if from any to 239.0.0.0/8 keep state - don't forget to " pfctl -f /etc/pf.conf " - you can check your modifications are taken into account with "pfctl -s nat" and "pfctl -s rule". Look for the "rdr-anchor miniupnpd" (if applicable) and/or "anchor miniupnpd" lines. - OpenBSD users may need to add a multicast_host= line to /etc/rc.conf.local see $man 8 netstart - install as root using : # make install or # PREFIX=/usr/local make install - run as root : The daemon needs rights to modify pf rules. =========================== *BSD,*Solaris/ipf ============================= configure tries to detect wether ipf or pf should be used. If it fails, you can use ./configure --firewall=ipf Installation steps are allmost the same as with pf. *Solaris users would be interested in reading informations from : http://blogs.sun.com/avalon/category/IPFilter ============================= Mac OS X/ipfw =============================== - To enable non standard compilation options, > ./configure -h - use either 'bsdmake -f Makefile.bsd' (if available) or 'make' to build ============================== Mac OS X/pf ================================ Starting with Mac OS X 10.7 Lion, pf replaced ipfw as the OS X firewall. also bsdmake is not available anymore. Make sure you have installed the Xcode commande line tools (from the Xcode Preferences menu or using 'xcode-select --install' command) You need to download xnu sources : https://opensource.apple.com/tarballs/xnu/ - If version of xnu >= 4570, > ./configure Then edit config.h, adding line "#define PFVAR_NEW_STYLE" to it. > INCLUDES="-I.../xnu/bsd -I.../xnu/libkern" make ============================ Linux/netfilter ============================== To Build and install : - make sure you have libiptc available on your system : if you are using debian, "apt-get install iptables-dev" Some versions of the iptables-dev package don't include the necessary files : read "how to get libiptc with its headers on debian" below. In anycase, libiptc is available in iptables sources packages from http://netfilter.org - edit and run netfilter/iptables_init.sh shell script. This script must allways be run before the daemon to set up initial rules and chains. - Build and edit the config.h file > ./configure > vi config.h - Build the daemon > make If not using iptables from your system, > ./configure --iptablespath=/path/to/iptables-1.4.1 > make - install as root using : > make install - A miniupnpd script should be installed to /etc/init.d and the configuration files to /etc/miniupnpd - anytime, you can use the netfilter/iptables_flush.sh script to flush all rules added by the daemon. - after killing the daemon, you can get back to iptables initial state by running the netfilter/iptables_removeall.sh script. Don't forget to edit the script to your convenience. NOTE: a /etc/init.d/miniupnpd script will be installed. If it suits you, you can use is with start, stop or restart argument. # /etc/init.d/miniupnpd restart How to get libiptc with its headers on debian : (Note: that should be useless now that netfilter/tiny_nf_nat.h is included) - Use apt-get to get sources : > apt-get source iptables you should then have an iptables-x.x.x/ directory. - configure and compile : > cd iptables-x.x.x/ > ./configure --enable-static > make - it is now possible to compile miniupnpd using the following command : > ./configure --iptablespath=/path/to/iptables-x.x.x > make ======================== Linux/netfilter nftables ========================= install the required development libraries. For debian : > apt-get install libnftnl-dev libmnl-dev To build : > ./configure --firewall=nftables > make see : https://miniupnp.tuxfamily.org/forum/viewtopic.php?p=4370 https://github.com/miniupnp/miniupnp/pull/114 =========================== Configuration ============================= Edit the /etc/miniupnpd.conf file to set options. Almost all options are also available through command line switches. A basic configuration would set : ext_ifname : WAN network interface (interface connected to the internet) listening_ip : LAN network interface (network where to supply NAT traversal) enable_natpmp=yes enable_upnp=yes and the permission rules (see below). Historically, LAN had to be specified by IP/mask, such as listening_ip=192.168.0.1/24 but if you compiled with IPv6 support, you need to specify an interface name : listening_ip=eth0 The current code assumes there is only one IPv4 address assigned to LAN interfaces. That is not the case with some CARP setup, there is then a risk the wrong mask would be picked. You can force the mask when using interface names : listening_ip=eth0/24 Some users want to use miniupnpd on a NAT router which is connected to the internet through another NAT router (NAT behind NAT). This kind of setup is strongly discouraged. miniupnpd will refuses to launch when detecting a private (RFC1918) "WAN" IP address. The ext_ip option sould be added : ext_ifname=eth1 # "WAN" network interface, whose IP could be 192.168.1.22 ext_ip=80.1.2.3 # Real public IP address listening_ip=eth0 Please note that miniupnpd doesn't redirect any port on the other NAT router. UPNP requests forwarding is not implemented. It is however possible to use STUN. See the ext_perform_stun / ext_stun_host / ext_stun_port options. it is also possible to set a different interface for IPv6 WAN ext_ifname=eth0 ext_ifname6=sit0 miniupnpd supports some kind of security check for allowing or disallowing redirection to be made. The UPnP permission rules are read from the miniupnpd.conf configuration file. When a new redirection is requested, permission rules are evaluated in top-down order and the first permission rule matched gives the response : redirection allowed or denied. If no rule is matching, the redirection is allowed, so it is a good practice to have a "catch all" deny permission rule at the end of your permission ruleset. Sample permission ruleset : allow 4662-4672 192.168.1.34/32 4662-4672 deny 0-65535 192.168.1.34/32 0-65535 allow 1024-65535 192.168.1.0/24 1024-65535 deny 0-65535 0.0.0.0/0 0-65535 With this ruleset, redirections are allowed only for host on the subnet 192.168.1.0/255.255.255.0 for the ports 1024 or above. There is an exception for the host 192.168.1.34 for which only redirections from/to port 4662 to 4672 are allowed. You can generate the uuid for your UPnP device with the uuidgen available under linux. The following following OpenBSD package is also providing a "uuid" tool : http://www.openbsd.org/4.0_packages/i386/uuid-1.5.0.tgz-long.html An web based uuid generator is also available : http://kruithof.xs4all.nl/uuid/uuidgen On linux systems, one could also use the command 'cat /proc/sys/kernel/random/uuid' to generate an uuid. More simple, use the genuuid makefile target : > make genuuid This target is needed by the "install" target, so it is done automatically during install. To stop the daemon use : # kill `cat /var/run/miniupnpd.pid` or if your linux system use /etc/init.d/ # /etc/init.d/miniupnpd stop * Signals : miniupnpd handles the following signals : SIGUSR1: Send public IP address change notification SIGUSR2: Handle special actions in Tomato Firmware version Or rewrite the lease_file SIGINT: Close gracefully SIGTERM: Close gracefully SIGPIPE: Ignore There is code to detect change in network interfaces bsd/ifacewatcher.c and linux/ifacewatcher.c, but if that code doesn't work for you, you may want to send SIGUSR1 to miniupnpd if your public IP address changed.