I created a DNS name confirmation confirmation tool in Express + Node.js for API cooperation between servers. Since name resolution is performed on Node.js on the server, it is possible to check in the same environment as the actual applic…

I am building a DMZ in my home lab with the Cisco ASA 5505. In the case of a simple inside-outside setting, set the security level to inside: 100, outside: 0 and allow traffic from outside by FW and NAT. However, inclusion of the DMZ makes…