Add the Forwarding option.

[oweals/tinc.git] / doc / tinc.texi

diff --git a/doc/tinc.texi b/doc/tinc.texi
index 71babb1c1ba4989eb12f90ebaa8f50b4d0fe9a48..091b5e7a0e50f3692722b6f92f39b5d9c32e6e05 100644 (file)
--- a/doc/tinc.texi
+++ b/doc/tinc.texi
@@ -818,6 +818,26 @@ Tinc will expect packets read from the virtual network device
 to start with an Ethernet header.
 @end table
 
+@cindex Forwarding
+@item Forwarding = <off|internal|kernel> (internal)
+This option selects the way indirect packets are forwarded.
+
+@table @asis
+@item off
+Incoming packets that are not meant for the local node,
+but which should be forwarded to another node, are dropped.
+
+@item internal
+Incoming packets that are meant for another node are forwarded by tinc internally.
+
+This is the default mode, and unless you really know you need another forwarding mode, don't change it.
+
+@item kernel
+Incoming packets are always sent to the TUN/TAP device, even if the packets are not for the local node.
+This is less efficient, but allows the kernel to apply its routing and firewall rules on them,
+and can also help debugging.
+@end table
+
 @cindex GraphDumpFile
 @item GraphDumpFile = <@var{filename}> [experimental]
 If this option is present,
@@ -928,11 +948,18 @@ specified in the configuration file.
 When this option is used the priority of the tincd process will be adjusted.
 Increasing the priority may help to reduce latency and packet loss on the VPN.
 
+@cindex StrictSubnets
+@item StrictSubnets <yes|no> (no) [experimental]
+When this option is enabled tinc will only use Subnet statements which are
+present in the host config files in the local
+@file{@value{sysconfdir}/tinc/@var{netname}/hosts/} directory.
+
 @cindex TunnelServer
 @item TunnelServer = <yes|no> (no) [experimental]
 When this option is enabled tinc will no longer forward information between other tinc daemons,
-and will only allow nodes and subnets on the VPN which are present in the
+and will only allow connections with nodes for which host config files are present in the local
 @file{@value{sysconfdir}/tinc/@var{netname}/hosts/} directory.
+Setting this options also implicitly sets StrictSubnets.
 
 @end table