How to limit maximum number of TCP connections

[Eddie G.O'Connor Jr-I]

On 06/28/2012 02:06 AM, Ed Greshko wrote:
> On 06/28/2012 02:02 PM, Ed Greshko wrote:
>> On 06/28/2012 01:27 PM, Jatin K wrote:
>>> well..... suppose I've 5 clients in my office ( say A,B, C, D, E ) and a linux box
>>> which is working as a router ( gateway ), I want  to allow only 4 concurrent pcs to
>>> access the Internet, say if A,B,C,D is using internet then fifth client E can not
>>> access the internet until any of previous connected clients ( A,B,C, or D) gets
>>> disconnected/session ended
>> Define "access internet".....
>>
>> Do you mean *all* protocols?  So, you want to stop a 5th system from browsing, ftp,
>> ssh, ntp, pop, imap, etc?  So, if A, B, C, and D are using these protocols...which
>> can happen without direct user input (pop/imap polls, facebook and rss feed updates,
>> etc.)  you want to block E for an indeterminate amount of time?
>>
>> Seriously?
>>
>> I think you need to state the problem you are trying to solve....not ask for a
>> solution which really sounds wrong headed.
>>
>>
> You do realize that the users being barred access will be getting "timeout" notices
> and such on their browsers and they a very likely to be quite irritated in short order.

Funnily enough, I once worked in a company that did something "like" 
this, it was a sort of "network provisioning / monitoring / bandwidth & 
time allotment" thingie. It was strictly for the guys in the Mailroom 
and the Storage Room.....apparently they were surfing porn and AOL-ing 
all day, so the network admins had set it up where the connection would 
only run be "live" for a certain amount of time between the two of them, 
there were a total of 4 machines two guys in the mail room and 2 in the 
storage room. When BOTH machines in the mail room were active, the ones 
in the storage room were "dead" until at least ONE of the machines in 
the mail room went dead,...don't ask me how they did it......but it 
worked......at least until the company went under!....LoL!


EGO II