Can I connect a credit card machine to the internet via my macbook's ethernet jack?

I need to buy a credit card machine and wanted to know if I could share my macbook internet connection via ethernet jack with a POS device like the verifone vx510 or Hypercom T4220 IP
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GreatGermConnect With a Mentor Commented:
Apple makes this quite easy:

Consult the manual on the credit card machine you purchase to see how to set the network settings.
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