Netatalk 4.1.2
Name
macipgw — MacIP Gateway Daemon
Synopsis
macipgw [-d debugclass] [-f configfile] [-n nameserver] [-u unprivileged-user] [-z zone] [network] [netmask]
macipgw [ -v | -V ]
Description
macipgw provides IP connectivity for devices connected through an AppleTalk-only network, i.e. LocalTalk or Apple Remote Access (ARA). macipgw is normally started out of /etc/rc.
MacIP (formerly known as KIP) is a protocol that allows the encapsulation of IP packets in AppleTalk packets. macipgw registers itself as a MacIP gateway on the AppleTalk network and configures and brings up a tunnel interface (see tun(4)). It then forwards IP packets received from the AppleTalk network to the kernel through the tunnel interface. Likewise, IP packets received through the tunnel are forwarded to the AppleTalk device registered for the destination IP address.
Unlike other MacIP gateways, macipgw needs its own IP (sub-)net to operate, and does not use proxy-ARP for the addresses registered. The gateway will always use the first address in the network for the local address, i.e. 192.168.1.1 for the network 192.168.1.0/24.
If present, macipgw reads configuration options from /usr/etc/macipgw.conf (or equivalent pkgconf path.) Command line options will take precedence over configuration file options. See below for an example.
macipgw will log operational messages through syslog(3) under the facility LOG_DAEMON.
Options
-d <debugclass>
Specifies that the daemon should not fork, and that a trace of all actions be written to stdout. See the source code for useful values of debugclass.
-f <configfile>
Consult <configfile> instead of macipgw.conf for the configuration information.
-n <nameserver>
Specifies the IP address of a DNS name server the AppleTalk devices connected through the gateway should use.
-u <unprivileged-user>
Drop root privileges and change to user unprivileged-user after the server has started.
-z <zone>
Specifies that macipgw should register in zone instead of the default zone.
-v | -V
Show version information and exit.
<network>
Specifies the network number to use for the clients.
<netmask>
Specifies the netmask for the network.
Examples
Example: macipgw invocation
/usr/local/libexec/macipgw -n 192.168.1.1 -z "Remote Users" 192.168.1.0 255.255.255.0
Starts macipgw, assigning the Class C network 192.168.1.0 for devices connected through the gateway, specifying that the system macipgw is running on can be used as a name server, and that it should register in the zone Remote Users.
Example: macipgw.conf configuration file
[Global]
network = 192.168.151.0
netmask = 255.255.255.0
nameserver = 8.8.8.8
zone = My Zone
unprivileged user = foobar
See Also
tun(4), ip(4), atalkd(8), syslog(3), syslogd(8)
Bugs
No information besides the log messages is available on which AppleTalk devices are using the gateway.
Author
Stefan Bethke <[email protected]>
