[ANN] tperimeter 1.113 Released And Available

Tim Daneliuk tundra at tundraware.com
Sat Jun 9 23:46:09 CEST 2012

'tperimeter' Version 1.113 is released and available at:


The last public release was 1.112

What's New

Changed the wrapper file rebuild logic to delete outstanding access
requests independently of how often the script is run (either by
cron, or manually).  This means that the 'cron' frequency now
determines the average waiting time before a user's request is
fulfilled.  The '${DURATION}' variable in 'rebuild-hosts.allow.sh'
sets how long access will be permitted (The default value is 10

Minor documentation updates, typo fixes, and housekeeping.

What Is 'tperimeter'?

Have you ever been away from the office and needed, say, ssh access to
your system? Ooops - you can't do that because in your zealous pursuit
of security, you set your TCP wrappers to prevent outside access to all
but a select group of hosts. Worse still, everywhere you go, your local
IP address changes so there is no practical way to open up the wrappers
for this situation.

'tperimeter' is a dynamic TCP wrapper control system that gives you
(limited) remote control of your TCP wrapper configuration. It does this
via a web interface that you've (hopefully) secured with https/SSL. You
just log in, specify your current IP address and one of the services you
want to access. 'tperimeter' will then briefly open a hole in your
wrappers long enough to let you in. It then automatically closes the
hole again. Voila! Remote access to your system, wherever you are. You
get much of the facility of a VPN or so-called "port knocking" without
most of the aggravation. As a side benefit, 'tperimeter' will also
simplify management of your standard /etc/hosts.allow TCP wrapper
control file.

'tperimeter' is written in python, shell script, and html. It is very
small and easy to maintain. It was developed and tested on FreeBSD 4.x/8.x,
and apache 1.x/2.x, but should run with very minor (or no) modification on
most Unix-like systems like Linux or Mac OS X hosts. It comes complete
with documentation in html, pdf, dvi, and Postscript formats. There is
no licensing fee for any use, personal, commercial, government,
or institutional.

Tim Daneliuk     tundra at tundraware.com
PGP Key:         http://www.tundraware.com/PGP/

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