Our firm has a OA server in the network through port mapped to the network, server, then there are the upper deep convinced the firewall, the firewall top is a typical AR huawei router, outer net access address is: 221.111.90. * : 8899, all using normal, but there is only an external location, network is provided by your ISP on an external network IP access the OA url, normal use at ordinary times, each transplanting there will be 1-2 hours couldn't access the OA site, during the IP configuration directly to the laptop computer in the network can't access, but in a network IP network, you can access, after 1 to 2 hours, is back to normal, feeling the IP are forbidden to access the same at the time, and not just a IP networks outside, outside any network IP will meet, meet should be replaced after another IP networks outside and then returned to normal, you help me analyze the great god, OA server firewall is to prevent an IP access, lead to intermittent access be stopped? Thank you, thank you very much.

CodePudding user response:

Who knows, this first caught see if TCP handshake is directly by the reset?