2 RJ45 connectors on a one WAN cable

Posted by mr_stavo on Server Fault See other posts from Server Fault or by mr_stavo
Published on 2010-03-19T23:48:47Z Indexed on 2010/03/19 23:51 UTC
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networking

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lan

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ethernet

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router

Hello,

I encountered strange setup on a network at company where I do some work. They have internet connection from small ISP located in the same building, all I see is one CAT5 cable with 2 RJ45 connectors. One is going to WAN port on the router and another into LAN port on the same router. This is the only way for internet connection to work. I tried to connect my laptop to one of the RJ45 but it won't work.

Now, what is the purpose for such setup?

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