I'm ready to block all RMS SO POS 2.0 machines from accessing the Internet, but obviously still need to be able to process credit cards. Are the credit cards going out over SSL port 443? We're not using Debit Cards which go out over port 5003 correct? Do I have to unblock DNS requests in order to resolve the CC (domain) name lookup resolution or is there an other way around this?
Any other ports or services that anybody can think of that need to be unblocked?
I'm ready to block all RMS SO POS 2.0 machines from accessing the Internet, but obviously still need to be able to process credit cards. Are the credit cards going out over SSL port 443? We're not using Debit Cards which go out over port 5003 correct? Do I have to unblock DNS requests in order to resolve the CC (domain) name lookup resolution or is there an other way around this?
Any other ports or services that anybody can think of that need to be unblocked?
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