On Mon, 12 Mar 2001, fooler wrote:
> SYN_RECV is a part of a three-way handshake. the remote side is sending a
>SYN(chronize) packet to establish a
> connection at your side. after receiving that SYN packet at your side, it
>ACK(nowledge) and the same time sending a
> SYN packet back from the remote side while you are now in the SYN_RECV state until
>the remote side ACK it. this is
> called a three-way handshake. when the remote site ACK it, an ESTABLISHED connection
>comes next.
> try to run "tcpdump host <ipaddress of remote side>" and from the remote side,
>do a "telnet <your ip address> 25"
> and give it to me the tcpdump output for packet analysis so that i could explain it
>to you the causes of your problem.
>
Here's what happens when a client browser (i.e Netscape) is accessing a
website (i.e. www.netscape.com):
1)
client browser --------> web server
port: 14000 port: 80
SYN (syn request)
2)
client browser <-------- web server
ACK
SYN
3)
client browser --------->web server
ACK
I'm just sharing...
:)
---
roi
angeles communications
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