tcp synack造句

This requirement comes from the fact that outbound packets ( for example, a TCP SYNACK ) as responses to inbound packets ( for example, a TCP SYN ) coming in through a PCP mapping as already rewritten by a NAT device or firewall, must also go back the same way so appropriate inverse packet rewritting can be performed.
It's difficult to find tcp synack in a sentence. 用tcp synack造句挺难的