Limits on number os ssh users? X users?

[John Vetterli]

On Wed, 15 Feb 2006, James Knott wrote:
> William O'Higgins Witteman wrote:
>> Are there limits to how many users can be logged in at once to a Linux
>> box via ssh?  Are there limits for X sessions?  Or is it just hardware
>> and bandwidth?  If the limits are in hardware, how many users would be
>> likely before performance issues or memory outages stopped the increase?
> In recent versions of Linux, you're limited to only 4 billion users,
> though I doubt you'd want them all to connect at the same time.  ;-)

My guess is that you would be limited by the number of simultaneous tcp 
connections the kernel can handle, or the number of open file descriptors.

JV
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