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Important Ports (25 (Simple Mail Transfer Protocol (SMTP) (SMTP is used…
Important Ports
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23
Telnet
Telnet is the primary method used to manage network devices at the command level. Unlike SSH which provides a secure connection, Telnet does not, it simply provides a basic unsecured connection.
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Domain Name System (DNS)
The DNS is used widely on the public internet and on private networks to translate domain names into IP addresses, typically for network routing. A DNS server can also be set up within a private network to private naming services between the hosts of the internal network without being part of the global system.
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NetBIOS
NetBIOS itself is not a protocol but is typically used in combination with IP with the NetBIOS over TCP/IP (NBT) protocol. NBT has long been the central protocol used to interconnect Microsoft Windows machines.
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