[Gorzaloon]

What about MAC filtering?

I authorize only two MAC numbers on my router, one for each laptop.

[MichiganMan]

What about MAC filtering?

I authorize only two MAC numbers on my router, one for each laptop.

MAC filtering is almost no protection.  MAC addresses are transmitted in the clear and can be spoofed easily.  ie. My router allows me to set its MAC address.  MAC filtering is like locking your screen door.  It will only keep out those that value your property.  That said, I still do it myself for the heck of it. But I also have real security measures in place as well.

[zeugma]

I authorize only two MAC numbers on my router, one for each laptop.

That helps if you want to make the bad guy's job a little bit harder, but it is trivial to spoof a MAC address.

[Still Thinking]

What about MAC filtering?

Very easily spoofed. Only useful if you're trying to keep out somebody's grandma.

[Little Pig]

MAC filtering is worthless too, because MACs are easily spoofed.

[Little Pig]

MAC filtering is worthless too, because MACs are easily spoofed. If I can see your traffic, I can pretend to have one of the authorized MAC addresses. I can even kick the legitimate one off the network, and keep kicking it to prevent it from re-connecting.

[Parthalan]

"What about MAC filtering?
I authorize only two MAC numbers on my router, one for each laptop."

MAC addresses can be cloned. With a free sniffer utility I can find out your MAC address and clone it. Then I am in your network easier than finding a password.