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Router WAN and LAN Sockets: Differences, Functions, and RJ45 Connection Explained

golec2604 29913 7
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 14860547
    golec2604
    Level 16  
    The WAN socket in home routers is marked in green and the rest in yellow. The size of these sockets is the same that is RJ45. Is there any difference in action ??
    It is known that the WAN is to support the external Internet and LAN to share the net. But I did little tests and connected the external internet to the WAN socket, then to the LAN socket and there was an internet connection on each of them and it always worked on every device. So I somehow didn't notice the difference in action.
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  • #2 14860593
    bogiebog
    Level 43  
    Some routers can be set up so that WAN becomes LAN.


    What IP does the computer get in both cases?

    Show the result "tracert -d 8.8.8.8" in both cases.
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  • #3 14861246
    golec2604
    Level 16  
    I am now unable to do this. Generally, yes.
    I can not connect the external internet directly to the LAN sockets as it is normally connected to the premises by LAN, or when there is a LAN cable from the provider's modem ??
  • #4 14861274
    jdubowski
    Tube devices specialist  
    golec2604 wrote:
    I can not connect the external internet directly to the LAN sockets as it is normally connected to the premises by LAN, or when there is a LAN cable from the provider's modem ??


    If your box is in router mode then no.
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  • #5 14861363
    golec2604
    Level 16  
    I used to have internet with UPC, they only gave the modem and to share the internet I used an old netia adsl wifi router that did not have a WAN input. I connected the LAN cable from the modem to this router to the LAN socket and the internet worked, divided the net into several computers via wifi and LAN too.

    Then why are you saying no ??
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  • #6 14861932
    m.jastrzebski
    Network and Internet specialist  
    golec2604 wrote:
    The WAN socket in home routers is marked in green and the rest in yellow. The size of these sockets is the same that is RJ45. Is there any difference in action ??
    It is known that the WAN is to support the external Internet and LAN to share the net. But I did little tests and connected the external internet to the WAN socket, then to the LAN socket and there was an internet connection on each of them and it always worked on every device. So I somehow didn't notice the difference in action.
    in home copper WAN routers and LAN NAT is implemented. In fact, it is a router with 2 ports plus a 5-port switch (one port is used to connect the switch to the LAN port.
    When you plugged the cable from the provider to the LAN, you plugged it into the switch. The computer connected to the second LAN and then the computer got the IP address from the provider, which is usually assigned to the router on the Wan port. There is a good chance (depending on the accessor) that 2 computers would not work at the same time when the provider is blocked from assigning more than 1 address to your devices. But without specifying the addressing you have on the router (wan) it's hard to say anything more. if you plug in the cable from the supplier through the switch to the Wan, it would also work.
  • #7 14862002
    golec2604
    Level 16  
    But on this router (it was exactly asmax 1004g router) there was no WAN socket, so I connected the modem cable to the router's LAN socket and it divided the internet between several computers via WiFi and also through the LAN cable connected to this router, the computers got internal IP addresses. And this is very surprising to me, because in this case I do not understand the essence of the additional WAN socket, since everything works on the LAN.

    It looked as if the net went through the switch to the router from the router to wifi and computers,
    and if someone hooked up with a cable, it would rule that the internet returned to the switch from the router and the switch to the connected computer.

    Strange, but that's how it worked.
  • #8 14864148
    golec2604
    Level 16  
    Any hint ??
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Topic summary

The discussion revolves around the functionality of WAN and LAN sockets in home routers, specifically the differences and similarities in their operation. Users note that while WAN sockets are typically designated for external internet connections and LAN sockets for internal network sharing, some routers allow for configurations where the WAN can function as a LAN. Tests conducted by users show that connecting the external internet to either socket can yield internet access on multiple devices. However, concerns are raised about potential limitations, such as IP address assignment from the internet service provider, which may restrict simultaneous connections. The conversation highlights the practical implications of using LAN sockets for internet sharing, even in the absence of a dedicated WAN socket, as experienced with specific router models.
Summary generated by the language model.
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