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Tag: Linux

Mastering the Art of Changing Java Versions in Ubuntu: A Comprehensive Guide

Posted on 2023-03-06

To change the default Java version in Ubuntu, you can follow these steps: Check the installed Java versions on your system using the command: 1. Check the installed Java versions on your…

How to install iDempiere ERP on your Raspberry Pi

Posted on 2023-02-24

This guide will teach you how to quickly make an Ubuntu Operation System SD card, boot it on Raspberry Pi 4, and set up the iDempiere server. Preparation Optionally: Prepare the SD…

What is the difference between ufw and iptables?

Posted on 2023-02-19

ufw and iptables are closely related. In Ubuntu, ufw is a front-end interface to iptables that provides simpler commands and options for setting iptables rules and managing the firewall. When you set…

Raspberry Pi 使用DDNS應用

Posted on 2019-06-16

iDempiere Port Forwording

Posted on 2019-06-01

iDempiere 預設 https port 為 8443. 若要修改為443 需要用到 root 權限. 安全上考量,建議維持 8443 Port. 再利用 iptables 進行Port Forwarding即可. 參考程式碼如下.

EMail 自主管理或代管比較

Posted on 2018-11-29

企業或組織幾乎都會有自己的專屬網域來管理員工的信箱,例如 ninniku.tw 而不會使用免費信箱來做為對外聯繫信箱。 專屬網域有許多好處: 1. 離職員工信箱管理:可以設定離職員工信箱FORWARD到該主管信箱。 2.可以對員工信箱進行備份。 3.可以和企業資訊系統整合。 專屬網域可以用代管或自行建立主機管理兩種方式。 評估兩個關鍵點: 1.員工人數 2.是否有能力維護。 以下計算邊際人數,超過該值,建議自主管理比較有利。 Gmail 一個帳號五年的成本 9,000。 邊際人數= 65,000 / 9,000 = 7.2 Gandi 一個帳號五年的成本 3,780。 邊際人數 = 65,000 /  3,780 = 17.2…

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