[VOIPSEC] VoIP and security, in relationship to source code "openess"

[Network Fortius]

Hi, all,

I have been enjoying the very interesting discussions on this list, for 
a little more than a week, but have not seen (and could not find in the 
archives - by the way, would anybody have anything against making this 
list part of http://gmane.org/, so that we could enjoy some searching 
capabilities?!?) the subject of security, vis-à-vis "openness" of code. 
I am mainly interested in expert opinion about the very well known 
http://asterisk.org/ and the recently announced new release of 
http://www.sipfoundry.org/sipX/index.html (perhaps even other little 
known ones, e.g. http://isdn.jolly.de/) - any comments?!?

Regards,
Stef