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Ports and protocols
Ports and protocols
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Question
Answer
49
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TACACS Login Host Protocol
53
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DNS - Domain Name System
UDP 67 68
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DHCP - Dynamic Host Configuration Protocol
UDP 69
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TFTP - Trivial File Transfer Protocol
UDP 123
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NTP - Network Time Protocol
UDP 1812 1813
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RADIUS
20 21
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FTP - File Transfer Protocol
22
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SSH
23
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Telnet
25, 587
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SMTP - Simple Mail Transfer Protocol
110
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POP3 - Post Office Protocol
995
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POP3S - Internet Message Access Protocol over TLS/SSL
143
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IMAP - Internet Message Access Protocol
993
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IMAPS - Internet Message Access Protocol over TLS/SSL
80
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HTTP - Hypertext Transfer Protocol
443
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HTTPS - Hypertext Transfer Protocol over SSL/TLS
389
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LDAP - Lightweight Directory Access Protocol
636
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LDAPS - Lightweight Directory Access Protocol over TLS/SSL
88
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Kerberos authentication agent
445
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Active Directory, Windows Shares
3268 3269
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Microsoft Global Catalog Active Directory
1433 1434
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Microsoft SQL
137 138 139
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NetBIOS
500
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ISAKMP - IKE-Internet Key Exchange
161 162
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SNMP - Simple Network Management Protocol
179
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BGP - Border Gateway Protocol
514
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syslog
554
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RTSP - Real Time Streaming Protocol
1723
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PPTP - Point-to-Point Tunneling Protocol
3389
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RDP - Remote Desktop Protocol
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