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  • Committer: Teddy Hogeborn
  • Date: 2019-07-14 23:39:53 UTC
  • mto: This revision was merged to the branch mainline in revision 384.
  • Revision ID: teddy@recompile.se-20190714233953-1zmsd3o062xloazt
Server bug fix: Allow restarts when using port= option

If the Mandos server is configured to use a specific TCP port to
listen to (by using the port= option in mandos.conf or the command
line --port option), that port becomes unusable for a time when the
Mandos server is restarted, making restarts fail.  Avoid this by, if a
port number is specified, using SO_REUSEADDR when binding the
listening TCP socket to a port number.

* mandos (IPv6_TCPServer.server_bind): Set self.allow_reuse_address if
                                       a port number is specified.

Reported-by: Juan Miguel Alcarria Herrera <juanmi@arco2000.es>

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mandos-options.xml
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    <emphasis>not</emphasis> run in debug mode.
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  </para>
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  <para id="priority_compat">
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    GnuTLS priority string for the <acronym>TLS</acronym> handshake.
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    The default is <quote><literal
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    >SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA</literal>
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    <literal>:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160</literal></quote>.
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    See <citerefentry><refentrytitle
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    >gnutls_priority_init</refentrytitle>
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    <manvolnum>3</manvolnum></citerefentry> for the syntax.
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    <emphasis>Warning</emphasis>: changing this may make the
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    <acronym>TLS</acronym> handshake fail, making server-client
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    communication impossible.  Changing this option may also make the
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    network traffic decryptable by an attacker.
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  </para>
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  <para id="priority">
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    GnuTLS priority string for the <acronym>TLS</acronym> handshake.
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    The default is <quote><literal
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    >SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA</literal></quote>.
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    See <citerefentry><refentrytitle
 
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    The default is
 
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    <quote><literal>SECURE128&#8203;:!CTYPE-X.509&#8203;:+CTYPE-RAWPK&#8203;:!RSA&#8203;:!VERS-ALL&#8203;:+VERS-TLS1.3&#8203;:%PROFILE_ULTRA</literal></quote>
 
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    when using raw public keys in TLS, and
 
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    <quote><literal>SECURE256&#8203;:!CTYPE-X.509&#8203;:+CTYPE-OPENPGP&#8203;:!RSA&#8203;:+SIGN-DSA-SHA256</literal></quote>
 
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    when using OpenPGP keys in TLS,.  See <citerefentry><refentrytitle
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    >gnutls_priority_init</refentrytitle>
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    <manvolnum>3</manvolnum></citerefentry> for the syntax.
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    <emphasis>Warning</emphasis>: changing this may make the