On Feb 28, 2007, at 2:03 PM, Bill Fassler wrote:

> I started a thread on this a while back.  I see now that with 0.99.5  
> I can now use "decode as" with more choices including "IP".  That  
> puts me VERY close to being able to dissect our software going  
> through the VPN tunnel (when it is not encrypted I.E. when I use a  
> NULL encryption key).  The only problem is that the there is a 5  
> byte variation of a PPP protocol before the encapsulation starts.   
> In other words, if I had the option of adding an offset to the  
> "decode as" mechanism I would be all set.  I believe this would make  
> it possible for "legitimate" folks to debug code through a VPN  
> tunnel. An offset into the "decode as" would be much more versatile  
> than trying to write seperate plugins or dissectors for each  
> variation of VPN encapsulation protocols.

...but would mean we wouldn't have dissectors for those VPN  
encapsulation protocols.

Luis, am I misremembering, or is it possible to write dissectors in  
Lua?  If so, then, at least for versions of Wireshark with Lua  
support, that'd be a way to let people quickly write dissectors for  
those protocols.
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