MAC address

Here is the situation: A friend of mine uses cable internet. His provider restricts it to only one MAC address. He wants to connect a second computer to the internet, using second NIC and his machine as a router/gateway. The question is if the provider can find out that a second computer is attached /coz they'll cut him off if they find out/. Are the MAC addresses or the original IP preserved in the IP packet?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

No, they generally are not at the lower levels of traffic.  Only the IP addess remains in the header, and if your friend's computer is using ICS to share the connection, it will use NAT to translat the address back out to the "public address."

Your friend should use a SOHO gateway (D-Link, Linksys) for this.  It works much better, does not require the "main" PC to remain on, and is pretty typical even for a single PC setup, since it provides extra security to the computer.

I don't know many cable companies that still restrict you to one PC, though.  Sounds like this place sucks!

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
When you have an ISP that restricts to a single MAC address, follow qwaletee's recommendation, get a linksys router, and use the "Clone Mac Address" option in the advanced properties. This way, the ISP gets the MAC of the router, not your NIC.
mitttkoAuthor Commented:
aha, sucks

is the destination of the packets recognized only by ports?
and what about the internal-net MACs? can the me "seen" from the provider?
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

mitttkoAuthor Commented:
to Wiired
are there any other soho /cheap/ routers around that do that trick? d-link?
mitttkoAuthor Commented:
can THEY BE "seen"...
mitttkoAuthor Commented:
<<No, they generally are not at the lower levels of traffic>>
just got that
Most Dlink's also have the Clone MAC address feature, but Iam not sure of any others off hand.
Price wise, between the Linksys and the Dlink...depends who is on sale. :-)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Apple Networking

From novice to tech pro — start learning today.