Security + Ports

Front 1

Port 21

Back 1

TCP FTP file transfer Protocol

Front 2

Port 22

Back 2

TCP UDP SSH, SCP, SFTP secure Shell, secure Copy, Secure FTP

Front 3

Port 23

Back 3

TCP UDP Telnet unencrypted remote administered network devices clear text

Front 4

Port 25

Back 4

TCP SMTP simple mail transfer protocol

Front 5

Port 53

Back 5

TCP UDP DNS Domain Name Service used to resolve host names to IPs and IPs to host names

Front 6

Port 69

Back 6

UDP TFTP trivial FTP simplified FTP to put a file on a remote host or get a file, lightweight

Front 7

Port 80

Back 7

TCP Http hyper text transfer protocol web pages unsecured

Front 8

Port 88

Back 8

TCP UDP Kerberos network authentication system of tickets Windows domain

Front 9

Port 110

Back 9

TCP POP3 post office protocol v3 receive mail from mail server unencrypted

Front 10

Port 119

Back 10

TCP NNTP network news transfer Protocol transports Usenet articles

Front 11

Port 135

Back 11

TCP UDP RPC/DCOM-scm Remote Procedure Call is used to locate DCOM ports to request a service from a program on another computer on the network

Front 12

Ports 137, 138,139

Back 12

TCP UDP NetBIOS netBIOS is used to conduct name querying, sending of data, and other functions over a netBIOS connection

Front 13

Port 143

Back 13

TCP IMAP Internet Message Access Protocol is used to receive email from a mail server with more features than POP3 unencrypted

Front 14

Port 161

Back 14

UDP SNMP Simple Network Management Protocol is used to remotely monitor network devices

Front 15

Port 162

Back 15

TCP UDP SNMPTRAP used to trap and Inform Requests to the SNMP Manager on a network

Front 16

Port 389

Back 16

TCP UDP LDAP Lightweight Directory Access Protocol is used to maintain directories of users and other objects AD windows unencrypted

Front 17

Port 443

Back 17

TCP HTTPS hyper text transfer Protocol Secure is used to transmit web page data to a client over an SSL/TLS encrypted connection

Front 18

Port 445

Back 18

TCP SMB Server Message Block is used to provide shared access to files and other resources on a network

Front 19

Ports 465 587

Back 19

TCP SMTP with SSL/TLS Simple Mail Transfer Protocol used to send email over the internet with an SSL and TLS secured connection

Front 20

Port 514

Back 20

UDP Syslog is used to conduct computer message logging, especially for routers and firewall logs

Front 21

Port 636

Back 21

TCP UDP LDAP SSL/ TLS LDAP is used to maintain directories of users and other objects over an encrypted SSL/TLS connection Active directory

Front 22

Port 860

Back 22

TCP iSCSI is used for linking data storage facilities over IP storage area networks

Front 23

Ports 989 990

Back 23

TCP FTPS File Transfer Protocol Secure is used to transfer files from host to host over an encrypted connection

Front 24

Port 993

Back 24

TCP IMAP4 with SSL/TLS Internet Message Access Protocol used to receive email from a mail server over SSL/TLS encrypted connection

Front 25

Port 995

Back 25

TCP POP3 SSL/TLS post office Protocol v3. used to receive email from a mail server using an SSL/TLS encrypted connection better confidentiality

Front 26

Port 1433

Back 26

TCP Ms-sql-s Microsoft SQL server is used to receive SQL database queries from clients

Front 27

Ports 1645 1646

Back 27

UDP RADIUS alternative Remote Authentication Dial-in User Service is used for authentication and authorization 1645, and accounting 1646

Front 28

Port 1701

Back 28

UDP L2TP Layer 2 Tunnel Protocol is used as an underlying VPN protocol but has no inherent security pair with Ipsec

Front 29

Port 1723

Back 29

TCP UDP PPTP point to point tunneling protocol is an underlying VPN Protocol with built in security

Front 30

Port 1812 1813

Back 30

UDP RADIUS Remote Authentication Dial in User Service is used for authentication and authorization 1812,and accounting 1813 default

Front 31

Port 3225

Back 31

TCP UDP FCIP Fibre Channel IP is used to encapsulate Fibre Channel frames within TCP/IP packets

Front 32

Port 3260

Back 32

TCP iSCSI Target is a listening port for a iSCSI targeted devices when linking data storage facilities over IP

Front 33

Port 3389

Back 33

TCP UDP RDP Remote Desktop Protocol used to remotely view and control other Windows systems via a Graphical User Interface

Front 34

Port 3868

Back 34

TCP Diameter A more advanced AAA protocol that is a replacement for RADIUS

Front 35

Port 6514

Back 35

TCP Syslog over TLS it is used to conduct computer message logging, especially for routers and firewall logs, over a TLS encrypted connection

Front 36

UDP ports

Back 36

22,23,53,69,88,

135, 137,138,139,161,162,

389, 514,636,

1645,1646, 1701,1812,1813,

3225,3389