Online Tools

Password

• Password Generator: https://passwrd.in 
• Modemly : Find the default password of the routers

Linux VPS Benchmark

• https://bench.monster/ 
  curl -LsO bench.monster/speedtest.sh; bash speedtest.sh
curl -LsO bench.monster/speedtest.sh; bash speedtest.sh -asia
• yabs.sh 
  curl -sL yabs.sh | bash 
• bench.sh 
  wget -qO- bench.sh | bash
• benchy.pw
  wget -qO- benchy.pw | sh
  

 DNS/IP

• DNS Check
• DNSChecker
• Google Admin Toolbox Dig
• Google Admin Toolbox Check MX
• Nslookup.io

Network Troubleshoot

• Port Forwarding Tester 
• Ping.pe
• CanYouSeeMe.org

IP Reputation (IP 聲望)

架設網站或者郵件伺服器之前，最好先評估伺服器的公用 IP 的聲望指數。如果太低，就會影響服務的可用性。

• Cisco: Talos
• Google: Google Postmaster Tools
• Sender Score

World Time

• Time.is