Document effect of settings changes on existing connections/forwardings.

[sgt/putty] / doc / config.but

diff --git a/doc/config.but b/doc/config.but
index 9ba5f37..3566d5d 100644 (file)
--- a/doc/config.but
+++ b/doc/config.but
@@ -2443,11 +2443,15 @@ address to listen on, by specifying (for instance) \c{127.0.0.5:79}.
 See \k{using-port-forwarding} for more information on how this
 works and its restrictions.
 
+In place of port numbers, you can enter service names, if they are
+known to the local system. For instance, in the \q{Destination} box,
+you could enter \c{popserver.example.com:pop3}.
+
 You can modify the currently active set of port forwardings in
-mid-session using \q{Change Settings}. If you delete a local or
-dynamic port forwarding in mid-session, PuTTY will stop listening
-for connections on that port, so it can be re-used by another
-program. If you delete a remote port forwarding, note that:
+mid-session using \q{Change Settings} (see \k{using-changesettings}).
+If you delete a local or dynamic port forwarding in mid-session, PuTTY
+will stop listening for connections on that port, so it can be re-used
+by another program. If you delete a remote port forwarding, note that:
 
 \b The SSHv1 protocol contains no mechanism for asking the server to
 stop listening on a remote port.
@@ -2463,6 +2467,11 @@ although the port cannot be reused by another program, you can at
 least be reasonably sure that server-side programs can no longer
 access the service at your end of the port forwarding.
 
+If you delete a forwarding, any existing connections established using
+that forwarding remain open. Similarly, changes to global settings
+such as \q{Local ports accept connections from other hosts} only take
+effect on new forwardings.
+
 \S{config-ssh-portfwd-localhost} Controlling the visibility of
 forwarded ports