Table of Contents
Advertisement
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.
Select Packet Trace from the Diagnostic tool menu.
Tip!
Packet Trace requires an IP address. The SonicWALL DNS Name Lookup tool can be used to find the
IP address of a host.
7. Type the IP address of the remote host in the Trace on IP address field, and click Start. You must
type an IP address in the Trace on IP address field; do not type a host name, such as
"www.yahoo.com". The Trace is off turns from red to green with Trace Active displayed.
8. Contact the remote host using an IP application such as Web, FTP, or Telnet.
9. Click Refresh and the packet trace information is displayed.
10. Click Stop to terminate the packet trace, and Reset to clear the results.
Captured Packets
The Captured Packets table displays the packet number and the content of the packet, for instance, ARP
Request send on WAN 42 bytes.
Packet Detail
Select a packet in the Captured Packets table to display packet details. Packet details include the packet
number, time, content, source of the IP address, and the IP address destination.
System Page 49
Advertisement
Table of Contents
