Since, you are using a Dialup tunnel, make sure you have split tunnel disabled. On FortiGate, go to the respective tunnel config under VPN > IPsec tunnels > Edit the Network config and check whether Split tunnel is enabled or disabled. If it is enabled, kindly disable and check whether you have a policy from dialup tunnel to WAN interface. If the configuration is fine as mentioned above, check if you are able to ping 22.214.171.124 from the machine, check the DNS resolution. If it still doesn't works then share the output of below commands- diag deb reset diag deb flow filter addr x.x.x.x diag deb flow trace start 100 diag deb en where x.x.x.x is any public IP other than 126.96.36.199 for which traffic is not initiated by any other machine
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