PCI (Payment Card Industry Security Standard)_Req 1.3.7

PCI (Payment Card Industry Security Standard)

Install and maintain a firewall configuration to protect cardholder data

Req 1.3.7

1.3.7 Do not disclose private IP addresses and routing information to unauthorized parties. Note: methods to obscure IP addressing may include but are not limited to: – network address translation (NAT) – placing servers containing cardholder data behind proxy servers/firewalls – removal or filtering of route advertisements for private networks that employ registered addressing – internal use of RFC1918 address space instead of registered addresses.

Restricting the disclosure of internal or private IP addresses is essential to prevent a hacker “learning” the IP addresses of the internal network and using that information to access the network. Methods used to meet the intent of this requirement may vary depending on the specific networking technology being used. For example the controls used to meet this requirement may be different for IPv4 networks than for IPv6 networks.


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