Hey folks, I just bought a house recently and it appears that the in-wall ethernet jacks don't work and I found out why: the ethernet cables are not connected to anything (see pics below).
What is the best/proper way to have ethernet cables connected? I would need to put the modem/router in this box (pic #2) in order to supply an internet connection to all of the rooms right?
Also I was told that this box is not "finished." It is supposed to have a power supply so that I can install the modem in the garage. Would it be difficult for a newbie like myself to do this on my own? Here are some pictures I took, any help is much appreciated, thanks!
Picture #1: Telephone box outside of the house. These wires lead into the garage. Blue lines are telephone. Note yellow CAT5e cable not connected to anything here (highlighted in red).
Picture #2: Panel inside the garage. Lead wires from outside of the house (cable/telephone/ethernet) come from the left side of the box and connect to the wires that go into the house on the right side. Highlighted in purple is the telephone line from outside the house (pic 1). This is connected to the telephone lines that go to all the rooms inside the house (highlighted in yellow.. does this look like a half-assed job?). Red is the CAT5e from outside of the house that's connected to nothing. Blue is a power source I think.. and lastly, highlighted green are all the CAT5e that go into each room. This is what I need help on. Do I need to terminate each of these wires with an RJ45/8P8C connector and plug them into a router? If so then I must install the modem/router in this box correct?
What is the best/proper way to have ethernet cables connected? I would need to put the modem/router in this box (pic #2) in order to supply an internet connection to all of the rooms right?
Also I was told that this box is not "finished." It is supposed to have a power supply so that I can install the modem in the garage. Would it be difficult for a newbie like myself to do this on my own? Here are some pictures I took, any help is much appreciated, thanks!
Picture #1: Telephone box outside of the house. These wires lead into the garage. Blue lines are telephone. Note yellow CAT5e cable not connected to anything here (highlighted in red).

Picture #2: Panel inside the garage. Lead wires from outside of the house (cable/telephone/ethernet) come from the left side of the box and connect to the wires that go into the house on the right side. Highlighted in purple is the telephone line from outside the house (pic 1). This is connected to the telephone lines that go to all the rooms inside the house (highlighted in yellow.. does this look like a half-assed job?). Red is the CAT5e from outside of the house that's connected to nothing. Blue is a power source I think.. and lastly, highlighted green are all the CAT5e that go into each room. This is what I need help on. Do I need to terminate each of these wires with an RJ45/8P8C connector and plug them into a router? If so then I must install the modem/router in this box correct?

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