step 1. ping google.com to check if get reply
step 2. if can’t ping google.com succcessfully but ping 8.8.8.8 works , you can try to open 53 TCP UDP port
step 1. ping google.com to check if get reply
step 2. if can’t ping google.com succcessfully but ping 8.8.8.8 works , you can try to open 53 TCP UDP port