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Viewing changes to network-protocol.txt

  • Committer: Teddy Hogeborn
  • Date: 2012-06-13 22:06:57 UTC
  • mto: This revision was merged to the branch mainline in revision 596.
  • Revision ID: teddy@recompile.se-20120613220657-qvq7c7nrndl3t413
* plugins.d/mandos-client.c (get_flags): Don't clobber errno.
  (up_interface): Removed; replaced with "interface_is_up".
  (interface_is_up, interface_is_running,
   lower_privileges_permanently, take_down_interface): New.
  (bring_up_interface): Return "error_t".  Use new functions
                        "interface_is_up", "get_flags", and
                        "interface_is_running".
  (main): Save all interfaces either autodetected or specified with
          --interface in argz vector "interfaces".  Save interfaces to
          take down on exit in argz vector "interfaces_to_take_down".
          Save interface names for DEVICE variable to network hooks as
          argz_vector "interfaces_hooks".  Bug fix: Be privileged
          while stopping network hooks.
* plugins.d/mandos-client.xml (SYNOPSIS): Changed --interface synopsis.
  (DESCRIPTION): Updated to document use of all interfaces.
  (OPTIONS): Updated description of "--interface".
* network-hooks.d/bridge: Parse comma-separated DEVICE environment
                          variable.
* network-hooks.d/openvpn: - '' -
* network-hooks.d/wireless: - '' -

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Lines of Context:
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The Mandos server announces itself as a Zeroconf service of type
2
 
"_mandos._tcp". The Mandos client sends a line of text where the first
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whitespace-separated field is the protocol version, which currently is
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"1".  The client and server then start a TLS protocol handshake with a
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slight quirk: the Mandos server program acts as a TLS "client" while
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the connecting Mandos client acts as a TLS "server".  The Mandos
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client must supply an OpenPGP certificate, and the fingerprint of this
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certificate is used by the Mandos server to look up (in a list read
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from a file at start time) which binary blob to give the client.  No
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other authentication or authorization is done by the server.
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| Mandos Client                              |     | Mandos Server |
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|--------------------------------------------+-----+---------------|
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| Connect                                    |     |               |
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| "1\r\n"                                    | ->  |               |
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| TLS handshake                              | <-> | TLS handshake |
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| OpenPGP public key (part of TLS handshake) | ->  |               |
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|                                            | <-  | Binary blob   |
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|                                            |     | Close         |