Wireshark-users: Re: [Wireshark-users] Help in displaying specific columns
From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Mon, 20 Sep 2010 10:45:19 -0700
On Sep 20, 2010, at 10:26 AM, Stephen Fisher wrote:

> You can use the -T fields option, but I'm pretty sure that wasn't 
> available in tethereal.  Tethereal is very old and has security 
> vulnerabilities that are fixed in Wireshark/Tshark (not to mention a lot 
> of new features).

Or, to put it another way, the last version of the program in question called "Tethereal" rather than "TShark" was version 0.99.1, so if you're running something called "Ethereal" or "Tetheral" it's version 0.99.1 or earlier.  The current version of those programs is 1.4.0.