I have a large customer who has problems with his Network. They called us and told some of the computers are losing connection to the domain server (maintained by the network company) and internet many times a day. We checked and came to the result that they have network problems (maybe switch, router etc.).
The problem is they have another company to look after their network (and server as I told). We don’t have any access to this router’s and switches’. So our network team can’t analyze this problem. That company specialized on Network tells me, all there switches and routers are working fine and if something is not working they will get an alarm. They told me to test the network with Wireshark or other Tool. How can I test the Server and client with Wireshark? Is there any other better Tool?