An available network cable (RJ-45 end on a CAT-5/6/6e cable) connected to an existing network. NOTE: Some credit card terminals support a wireless connection, this is possible to use, but wired is always preferred for reliability.
LAN connections should have a 1ms ping response time with less than 0.1% packet loss on average.
Internet connections for having a ping response time to Google of less than 50ms and less than 0.5% packet loss on average.
If you are providing a “segmented” network to separate the POS terminals from the payment devices you MUST:
Be able to ping the payment terminal from the POS device
Be able to ping the IP of the credit card processing company from the payment terminal
These need to be tested and operational before we will start our work
If you don’t know what a “segmented” network is, then this likely does not apply to you
If you restrict outbound traffic with a firewall see the Firewall Ports section below.