G+_Joshua Delaughter Posted August 22, 2015 Share Posted August 22, 2015 In what instances is using MAC address cloning necessary? I was helping a friend move into a college apartment complex, and their router wouldn't pull an IP address from the ISP, but their computer would. I verified that the routers WAN port was set to DCHP, and I know the ISP didn't assign a static IP address, because computers would just pull an address when on DCHP The ISP is a fiber to the home municipal provider, so there isn't a modem that the tenants have access to, just an Ethernet port in the wall. The ISP support said "there is no modem". It that true with FTTH? After cloning the PCs MAC to the routers WAN interface, it worked. I talked to some of the other tenants, and they didn't have to do that. Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted August 22, 2015 Share Posted August 22, 2015 Sounds like they are filtering the MAC based on vendor. you can try to change the MAC to the same vendor prefix as his computer. On a legit level, its not needed much anymore. It was when ISPs did NOT like you using a router to share the connection. So they would 'lock/filter' the MAC address, so to overcome that, you would use the same MAC on your router as on the modem (cable/DLS) Nowadays, its more for arp poisioning MItM attacks, appearing to be a different vendor (hack into a corp network and they use Dells, make your computer appear as a Dell) Link to comment Share on other sites More sharing options...
G+_Jason Marsh Posted August 22, 2015 Share Posted August 22, 2015 I'd be willing to bet it's nothing more than the ISP trying to guarantee the availability of their wireless service by blocking use of non-ISP APs, because noooobody would figure out how to get one on their network, right? Meanwhile, they've probably got their own APs cranked up to 11, walking on each other all over the place. Link to comment Share on other sites More sharing options...
G+_Joshua Delaughter Posted August 22, 2015 Author Share Posted August 22, 2015 Jason Marsh nah, they don't provide wifi at this complex, and they don't even try to push routers on the customer. The city has been really great about the service. Great prices, and amazing speed. We have a really small regional airport (2 gates total), and they installed wifi, with gigabit backend. My first thought was to bash it, but it was actually really fast when I tested it. Link to comment Share on other sites More sharing options...
G+_Joshua Delaughter Posted August 22, 2015 Author Share Posted August 22, 2015 Eddie Foy very strange, I was able to find a user posting in a linksys forum about having a similar problem with that local ISP, but cloning their MAC address didn't help, so it's possible that it's unrelated. Now I'm really curious about the modem situation with FTTH, Fr. Robert Ballecer, SJ possible segment topic? Link to comment Share on other sites More sharing options...
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