行動網路無法連線？三星手機簡易解決方案 / Mobile Network Not Connecting? Easy Solutions for Samsung Phones

如果手機無法連上4G或5G網路，除了重開機或短暫切換成飛航模式之外，還可以將SIM卡的網路模式暫時切換，讓4G或5G網路斷線後重連，這樣就可以讓行動網路重新運作了。

If your phone can't connect to a 4G or 5G network, besides restarting your phone or briefly switching to airplane mode, you can also temporarily switch the network mode of your SIM card to disconnect and reconnect to the 4G or 5G network. This can get your mobile network working again.

AdGuard Home不只是拿來擋廣告 / AdGuard Home Is More Than Just an Ad Blocker

自從裝起了AdGuard Home來擔任我住處的DNS伺服器之後，我用它擋掉了很多奇怪的廣告。除此之外，它還能拿來自訂Domain Name，真的是太實用了！

Since I set up AdGuard Home as the DNS server for my place, it has blocked a lot of weird ads. Besides that, it can also be used for custom domain names, which is really practical!

雜談：弱電箱換上了MikroTik路由器 / TALK: I Placed a MikroTik Router in the Low-Voltage Wiring Box

由於放在弱電箱裡面的無線基地臺一直當機，這次索性購買了MikroTik路由器RB450Gx4來用用看。這款號稱最適合放在弱電箱裡面的路由器，究竟會是如何呢？

自己講課的無線訊號自己架：5分鐘內用公用電腦架設「無線基地臺講課系統」 / Set up My Own WIFI in Each Lecture: Use a Public Computer to Set up a "WIFI Access Point Lecture System" Within 5 Minutes

由於我的演講跟課程大多時候都需要台下學生、聽眾連上網際網路，所以我自己會在講課之前將公用電腦變成可供127人連線的無線基地臺，還要滿足我講課的投影跟供電的需求。所需設備只有一臺已經連上網路的Windows電腦(Windows 10/11)，以及一個電源插座而已。以下說明我的規劃。

Ubuntu就是連不上192.168.0.1的路由器 / Ubuntu Just Can’t Connect to the Router With Ip 192.168.0.1

結果是因為brdige。

Docker網路問題 / Network Issue in Docker

執行Docker的時候出現了「ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network」錯誤訊息，該怎麼處理好呢？

行動基地臺的可連線裝置數量限制 / The Client Device Number Limitation of Access Points

裝一臺無線基地臺(Access Point, AP)就能讓整間會議室的人都能上網嗎？你可能想得太簡單了。