port numbers ocred.pdf

TCP Port Number | Application Protocol Function 20121 FTP (File Transfer Protocol) File transfer control data (20) and file data (21) 2 SSH (Secure Shell) Encrypted terminal emulation 23 Telnet Terminal emulation (not secure) 25 SMTP (Simple Mail Transfer Protocol) 80 HTTP (Hypertext Transfer Protoc...

TCP Port Number | Application Protocol Function 20121 FTP (File Transfer Protocol) File transfer control data (20) and file data (21) 2 SSH (Secure Shell) Encrypted terminal emulation 23 Telnet Terminal emulation (not secure) 25 SMTP (Simple Mail Transfer Protocol) 80 HTTP (Hypertext Transfer Protocol) Web pages (not secure) 110 POP3 (Post Office Protocol 3) Incoming e-mail 143 IMAP (Internet Message Access Protocol) | Incoming e-mail 443 HTTPS (HTTP Secure, HTTP over SSL) | Secure web pages 3389 RDP (Remote Desktop Protocol) Port Number | Protocol Type | Utility Protocol [ Outgoing e-mail Remote Desktop Function 53 upp DNS (Domain Name System) | Allows the use of DNS naming 67,68 uDP DHCP (Dynamic Host IP addressing provided by Configuration Protocol) a DHCP server (67) to network client (68) 137-139 161,162 TCP/UDP UDpP | NetBIOS/NetBT (NetBIOS | Enables legacy (pre-TCP/IP) over TCP/IP) SNMP (Simple Network apps to run on TCP/IP networks Remote management of network Management Protocol) devices; SNMP manager (161) and SNMP agent (162) 389 TCP LDAP (Lightweight Querying directories Directory Access Protocol) 445 TCP SMBJCIES (Server Message | Windows naming/folder sharing Block/Common Internet and cross-platform file sharing File System)