ASAHI Net's fixed IP address becomes a dynamic global IP address

How I fixed ASAHI Net's fixed IP option that had started assigning a dynamic global IP address.

Contracted with AsahiNet for Provider-Only Service to Use Static IP

Signing up for AsahiNet's provider-only plan just to get a static IP address.

How to stop the secondary SSID on Aterm WR8750N

How to disable the secondary SSID on the Aterm WR8750N router from the Quick Setup Web UI.

Resetting Aterm WR8750N to factory default state

How to factory-reset the Aterm WR8750N router with the physical RESET switch.

[iOS] Survey of Libraries for Checking Network Connection Status

Comparing iOS reachability libraries surfaced by pod search Reachability.

[iOS] Reachability - A Library for Checking Network Connection Status

A short intro to tonymillion/Reachability for checking network status in iOS apps.

[Technical Terms] Official Names of SYN and ACK in TCP 3-Way Handshake

A short memo on the official names of SYN and ACK in the TCP 3-way handshake, and how the connection is established.

[DoS Attack] Teardrop Attack

A note on Teardrop, a DoS attack that abuses overlapping IP-fragment offsets to crash vulnerable TCP/IP stacks.

[Windows10] L2TP/IPSec VPN client connection setup

Reference notes for L2TP/IPSec VPN client setup on Windows 10, including a Mac VPN Server tweak.

[Wi-Fi] Difference between 'wireless connection/joining' and 'simultaneous communication after wireless connection'

Q&A memo distinguishing Yamaha WLX302's wireless connection limits from its simultaneous communication limits.