noip.c (do_implicit_bind): Handle `SAME' impbind entries properly.

[preload-hacks] / README

diff --git a/README b/README
index 980f5a4b2aa80b12aead7bc02393ac6c4f1f5a0e..4abb92c376fca6e8fa571159da51202658cabf10 100644 (file)
--- a/README
+++ b/README
@@ -180,37 +180,33 @@ noip
        ## standard configuration
 
        ## debug
        ## standard configuration
 
        ## debug

-       realconnect +172.29.199.2:25
-       realconnect +172.29.199.2:53
-       realconnect +172.29.199.2:80
-       realconnect +172.29.199.2:3128
-       realconnect +127.0.0.1:6010-6020
-       realconnect -127.0.0.0/8
+       realconnect +127.0.0.1:6010-6020, +[::1]:6010-6020
+       realconnect +127.0.0.1:53, +[::1]:53
+       realconnect +local:22
+       realconnect -127.0.0.0/8, -[::1]

        realconnect -local
 
        realconnect -local
 

-       (172.29.199.2 is the IP address of the machine I took this
-       from.)  What this says is as follows.
+       What this says is as follows.

 
          * Don't produce debugging output, but let me turn it on easily
            if I feel the urge.
 
 
          * Don't produce debugging output, but let me turn it on easily
            if I feel the urge.
 

-         * Allow direct connection to my SMTP server, on port 25.  (The
-           `+' means `allow'.)
+         * Allow conversations with SSH-forwarded X displays, which
+           listen on the loopback interface.  Notice that the IPv6
+           address must be enclosed in square brackets because colons
+           are having to do double-duty here.

 
 

-         * Allow conversations with my local DNS server.  (The noip
-           hack is not particularly discriminating.  It replaces UDP
-           sockets with Unix-domain datagram sockets, just as it
-           replaces TCP sockets with Unix-domain stream sockets.)
+         * Allow conversations with my local DNS server.  (I run
+           `unbound' on all of my servers, to do DNSsec validation.
+           The noip hack is not particularly discriminating.  It
+           replaces UDP sockets with Unix-domain datagram sockets, just
+           as it replaces TCP sockets with Unix-domain stream sockets.)

 
 

-         * Allow conversations with my local web server.
-
-         * Allow conversations with my local squid proxy.
-
-         * Allow conversations with SSH-forwarded X displays.
+         * Allow conversations with my local SSH server.

 
          * Don't allow any other communication with anything else on
            the loopback network 127.0.0.0/8.  (I've still no idea why
 
          * Don't allow any other communication with anything else on
            the loopback network 127.0.0.0/8.  (I've still no idea why

-           each machine needs 16 million IP addresses for talking to
+           each machine needs 16 million IPv4 addresses for talking to

            itself.  The `-' means `deny'.)
 
          * Don't allow any other communication with any of my other
            itself.  The `-' means `deny'.)
 
          * Don't allow any other communication with any of my other


@@ -261,6 +257,25 @@ noip
        stuff that Emacs does magically find the SSH tunnel and work
        without me having to care.
 
        stuff that Emacs does magically find the SSH tunnel and work
        without me having to care.
 

+  Testing
+
+       noip provides a handy way for testing network servers and so on
+       safely.  For a start, you can run your test server apparently on
+       the same port as the real one.  Because noip consults the
+       environment variable NOIP_SOCKETDIR to find out where to put its
+       sockets, you can run two at a time and they don't interfere.
+       And noip doesn't care what port numbers your program tries to
+       bind, so you don't need to jump through stupid hoops in order to
+       test programs which use `privileged' ports.
+
+  Other applications
+
+       There are certainly loads of handy things you can do with noip.
+       If you think of one, let me know!
+
+                                                               Mark Wooding
+                                                       mdw@distorted.org.uk
+

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