So, client PC is connected to the server through a hub that also connects both to a router? Hubs are stupid. Is no reason or way that a hub will block anything beyond bandwidth, and hubs are rare these days. Is very hard to find a hub anymore. I bought a 5 port hub about a year ago for a very specific job to be able to run packet tracing software on a specific switch port parallel to a piece of hardware, and locating that hub was nearly impossible. It was either do that or marry two switch ports through software, which was very specifically not authorized. In your case, is almost acting like you are using a layer 3 switch that is also a router that is not configured correctly with access list. Really is acting like you have a router between client PC and server though. Could even be a layer two switch like Cisco that is not configured correctly. Switches can be incredibly smart too.
But, if you are connected through a hub from a client PC to a server, and can talk to it through DNS, makes no sense that you cannot talk through IP address, unless IP leases are changing so incredibly fast that DNS is always correct, IP address through DHCP pool is changing. I doubt that is happening. But, IP config would tell you what your IP address is readily.
By the way, I'm not an IT guy, I'm a phone guy that the bosses told to study, go take CCNA. I took the test once, brutal, just brutal. Now I have to study more, go get beat up again. Right now, I lknow enough to be a moron with a headache. Thinking about some of this stuff makes my head want to explode.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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