IT technical memo of networking

Entries from 2017-03-11 to 1 day

Check the status of DNS name resolution with Express + Node.js

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…

Security level setting when building DMZ with ASA

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…

This Blog is English Version of my JP's.

Sorry if my English sentences are incorrect.