Hello!

Can anybody tell the difference between ECB(event Control Block) and PCB
in case of TCP/IP

You can tweak ECB by maximum/minimyum packet receive buffers
and PCB by pre-allocated PCB count (it seems dynamic as well)

total PCB count at:
_tcp
total ECB
\e

What is the difference are they both a connection buffer?

Best regards,
Heiti Ernits