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Security+ 601 Ports

Port Numbers

QuestionAnswer
21 FTP File Transfer Protocol is used to transfer files from host to host
22 SSH, SCP, SFTP Secure Shell is used to remotely administer network devices and systems. SCP is used for secure copy and SFTP for secure FTP.
23 Telnet Unencrypted method to remotely administer network devices (should not be used)
25 SMTP Simple Mail Transfer Protocol is used to send email over the Internet
69 TFTP Trivial FTP is used as a simplified version of FTP to put a file on a remote host, or get a file from a remote host
80 HTTP Hyper Text Transfer Protocol is used to transmit web page data to a client for unsecured web browsing
88 Kerberos Used for network authentication using a system of tickets within a Windows domain
110 POP3 Post Office Protocol v3 is used to receive email from a mail server
119 NNTP Network News Transfer Protocol is used to transport Usenet articles
135 RPC/DCOMscm Remote Procedure Call is used to located DCOM ports request a service from a program on another computer on the network
137-139 NetBIOS is used to conduct name querying, sending of data, and other functions over a NetBIOS connection
143 IMAP Internet Message Access Protocol is used to receive email from a mail server with more features than POP3
161 SNMP Simple Network Management Protocol is used to remotely monitor network devices
162 SNMPTRAP Used to send Trap and InformRequests to the SNMP Manager on a network
389 LDAP Lightweight Directory Access Protocol is used to maintain directories of users and other objects
443 HTTPS Hyper Text Transfer Protocol Secure is used to transmit web page data to a client over an SSL/TLS-encrypted connection
445 SMB Server Message Block is used to provide shared access to files and other resources on a network
465/587 SMTP with SSL/TLS Simple Mail Transfer Protocol used to send email over the Internet with an SSL and TLS secured connection
514 Syslog Syslog is used to conduct computer message logging, especially for routers and firewall logs
636 LDAP SSL/TLS LDAP is used to maintain directories of users and other objects over an encrypted SSL/TLS connection
860 iSCSI iSCSI is used for linking data storage facilities over IP
989/990 FTPS File Transfer Protocol Secure is used to transfer files from host to host over an encrypted connection
993 TCP IMAP4 with SSL/TLS Internet Message Access Protocol is used to receive email from a mail server over an SSL/TLSencrypted connection
995 POP3 (SSL/TLS) Post Office Protocol v3 is used to receive email from a mail server using an SSL/TLS-encrypted connection
1433 Ms-sql-s Microsoft SQL server is used to receive SQL database queries from clients
1645/1646 RADIUS (alternative) Remote Authentication Dial-In User Service is used for authentication and authorization (1645) and accounting (1646)
1701 L2TP Layer 2 Tunnel Protocol is used as an underlying VPN protocol but has no inherent security
1723 PPTP Point-to-Point Tunneling Protocol is an underlying VPN protocol with built-in security
1812/1813 RADIUS Remote Authentication Dial-In User Service is used for authentication and authorization (1812) and accounting (1813)
3225 FCIP Fibre Channel IP is used to encapsulate Fibre Channel frames within TCP/IP packets
3260 iSCSI Target iSCSI Target is as the listening port for iSCSI-targeted devices when linking data storage facilities over IP
3389 RDP Remote Desktop Protocol is used to remotely view and control other Windows systems via a Graphical User Interface
3868 Diameter A more advanced AAA protocol that is a replacement for RADIUS
6514 Syslog over TLS It is used to conduct computer message logging, especially for routers and firewall logs, over a TLS-encrypted connection
53 DNS Domain Name Service is used to resolve hostnames to IPs and IPs to hostnames
Created by: Btown914
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