secnet 0.3.1~beta3

Ian Jackson ijackson at
Thu May 8 20:02:06 BST 2014

Hash: SHA256

I am pleased to announce secnet 0.3.1~beta3.  This is the 3rd beta of
secnet 0.3.1.

0.3.1 contains bugfixes, including some security fixes to
vulnerabilities which are exposed to internal vpn traffic.  It also
has a new feature intended to help with underlying network with broken
handling of large packets.

0.3.1~beta3 contains two portability fixes; one to an incompatibility
with some recent versions of GCC and one to a bug introduced in
0.3.1~beta1 affecting non-i386 builds.

0.3.1~beta3 can be found here:

If you are able to do so conveniently, please test it.  It should be
backwards-compatibile with previous versions.  For those on the SGO
VPN: chiark is currently running 0.3.1~beta2.

For a summary of the changes see the changelog extracts below.  For
full details see the git history.

secnet (0.3.1~beta3) unstable; urgency=low

  * Build fixes for non-i386 architectures and gcc 4.8.2.

 -- Ian Jackson <ijackson at>  Thu, 08 May 2014 19:53:43 +0100

secnet (0.3.1~beta2) unstable; urgency=low

  Fix relating to new fragmentation / ICMP functionality:
  * Generate ICMP packets correctly in point-to-point configurations.

 -- Ian Jackson <ijackson at>  Sat, 03 May 2014 18:58:09 +0100

secnet (0.3.1~beta1) unstable; urgency=low

  Security fixes (vulnerabilities are to inside attackers only):
  * SECURITY: Fixes to MTU and fragmentation handling.
  * SECURITY: Correctly set "unused" ICMP header field.
  * SECURITY: Fix IP length check not to crash on very short packets.

  New feature:
  * Make the inter-site MTU configurable, and negotiate it with the peer.

  Bugfixes etc.:
  * Fix netlink SEGV on clientless netlinks (i.e. configuration error).
  * Fix formatting error in p-t-p startup message.
  * Do not send ICMP errors in response to unknown incoming ICMP.
  * Fix formatting error in secnet.8 manpage.
  * Internal code rearrangements and improvements.

  Packaging improvements:
  * Updates to release checklist in
  * Additions to the test-example suite.

 -- Ian Jackson <ijackson at>  Thu, 01 May 2014 19:02:56 +0100
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