Page 62 SonicWALL TELE3 SP Administrator’s Guide
From
204.71.200.74 / 80 (02:00:cf:58:d3:6a)
To
207.88.211.116 / 1937 (00:40:10:0c:01:4e)
The SonicWALL receives SYN,ACK from remote host.
4. TCP sent on LAN [SYN,ACK]
From
204.71.200.74 / 80 (02:00:cf:58:d3:6a)
To
192.168.168.158 / 1282 (00:a0:4b:05:96:4a)
The SonicWALL forwards SYN,ACK to LAN client.
5. TCP received on LAN [ACK]
From
192.168.168.158 / 1282 (00:a0:4b:05:96:4a)
To
204.71.200.74 / 80 (02:00:cf:58:d3:6a)
Client sends a final ACK, and waits for start of data transfer.
6. TCP sent on WAN [ACK]
From
207.88.211.116 / 1937 (00:40:10:0c:01:4e
To
204.71.200.74 / 80 (02:00:cf:58:d3:6a)
The SonicWALL forwards the client ACK to the remote host and waits for the data transfer to
begin.
When using packet traces to isolate network connectivity problems, look for the location where
the three-way handshake is breaking down. This helps to determine if the problem resides with
the SonicWALL configuration, or if there is a problem on the Internet.
