The cable modem of my ISP is restricted to four devices. Is it possible to avoid this restriction if i connect a WIFI Router with own DHCP server, static IPs etc. to the cable modem so that I can connect multiple devices to my WIFI Router which uses only one position of my cable modem?

  • 1
    Using the word restricted can be misleading. Do you mean your ISP only allows 4 devices to be connected simultaneously? Or do you mean the modem is physically limited to 4 ports?
    – CharlieRB
    Apr 6 '15 at 12:44
  • If you connect networking equipment then all devices would be connected to that equipment not the modem.
    – Ramhound
    Apr 6 '15 at 13:13

Yes, if you have a wifi router plugged into the cable modem, the cable modem thinks only one device is connected. Additionally, all wi-fi routers (that I know of) come with a feature which mirrors the MAC address of your current computer so that the cable modem thinks it is just your same old computer still connected, not a new machine of any kind.

  • if doing this he may want to see if he can just bridge the modem. This way he avoids double NATing devices behind the wifi router.
    – Devan
    Apr 6 '15 at 22:43
  • The config file of my modem says: MaximumNumberofCPEs = 5. Can this be solved by bridge the modem and how can I setup this? thx for that :-) Apr 7 '15 at 11:30
  • This was the solution. I changed the mode of my wifi setup which is plugged into the cable modem to "Router" instead of "Access Point". I enabled the MAC mirror function in my wifi router and everything works now. This is my wifi router tp-link.com/at/products/details/?model=TL-WR702N#app Apr 7 '15 at 13:05

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.