From the TCP document
I have read this:
First, client sends a TCP packet with_ SYN=1, ACK=0 and ISN(Sequence Number)= 5000_. Do not forget, sequence number is random and it could be between 0 to 4,294,967,295.
I have some questions,
Why the seq number set to random, there will be safer?
Is it usually the SYN=1? can it be set to any random number like seq number? if can, will it have more small protection?