Exam NSE4_FGT-6.2 topic 1 question 75 discussion

Refer to the exhibit.

In the network shown in the exhibit, the web client cannot connect to the HTTP web server. The administrator runs the FortiGate built-in sniffer and gets the following output:
FortiGate # diagnose sniffer packet any "port 80" 4
interfaces=[any]
filters=[port 80]
11.510058 port3 in 10.0.1.10.49255 ->
10.200.1.254.80: syn 697263124
11.760531 port3 in 10.0.1.10.49256 ->
10.200.1.254.80: syn 868017830
14.505371 port3 in 10.0.1.10.49255 ->
10.200.1.254.80: syn 697263124
14.755510 port3 in 10.0.1.10.49256 ->
10.200.1.254.80: syn 868017830
What should the administrator do next to troubleshoot the problem?