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Free webmaster tools:
1.Non-secure Web Sites (HTTP)
2.Secure Web Sites (HTTPS)
3.Incoming Mail Server (POP3)
4.Outgoing Mail Server (SMTP)
5.FTP server
6.Network Device (Ping, ICMP)
7.DNS server
8.Port availability (Telnet)
9.Web Service (SOAP/HTTP)
10.User data protocol (UDP)
Tests by Dotcom-Monitor