On 2/6/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
On Tue, 6 Feb 2007, Bryan Sant wrote:
> You can't. You can only handle 2^16 - n TCP connections at the same
> time.
Where does this limitation come from? One might be tempted to relate the
maximum number of TCP connections to the 16-bit size of a TCP port number,
but that doesn't work because TCP connections are typically identified by
a four-tuple which includes the source and destination IP addresses as
well as the source and destination port numbers. In theory, a TCP stack
with only a single bound IP address can maintain ~64K independent
connections to _every_ peer even when using only a single local port, so
I'm guessing the 2^16 - n number must be coming from some other
implementation-dependent limitation. Or am I just up in the night? :-)
You can only handle 64K connections per NATed client. There is a max
limit controlled by your TCP/IP stack, but that can be tweaked in
/proc/sys/net.
-Bryan
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