Porturi uzuale folosite in retelistica
In retelistica un port este o componenta software specifica unei aplicatii sau proces care are rolul de punct terminal intr-o comunicatie folosita de protocoalele stratului Transport din Internet Protocol Suite, cum ar fi Transmission Control Protocol (TCP) sau User Datagram Protocol (UDP). Un anumit port este identificat de numarul sau, de adreasa IP la care este asociat si de protocolul folosit in comunicatie.
Lista porturilor uzuale folosite in retele-digitale si care trebuie avute in vedere la securizarea unui sistem[retea]:
21 “FTP”-Port. Transfer data through ftp.
22 “SSH”-Port. Connect a Secure Shell.
23 “Telnet”-Port. Terminal emulation.
25 “SMTP”-Port. Email delivery (see also port 465).
53 “DNS”-Port. Resolve domain names into ip addresses.
79 “Finger”-Port. Show informations about a user.
80 “HTTP”-Port. Communicate with the webserver.
110 “POP3″-Port. Used by clients to connect to an email server.
115 “SFTP”-Port. Used by “Simple File Transfer Protocol” to transfer files.
135 “RPC”-Port. Remote Procedure Calls.
139 “NetBIOS”-Port. Netbios (Network Basic Input Output System).
143 “IMAP”-Port. To access and manage mailboxes.
194 “IRC”-Port. Access IMAP mailboxes.
389 “LDAP”-Port. Querying and modifying directory services.
443 “HTTPS”-Port. Hypertext Transfer Protocol over Secure Socket Layer.
445 “SMB”-Port. Used to provide shared access to files and printers.
465 “SMTPS”-Port. Secured mail transfer.
1433 “MS SQL”-Port. To communicate with a SQL server.
1723 “PPTP”-Port. Point-to-Point Tunneling (VPN).
3306 “MySQL”-Port. To access MySQL databases.
3389 “Remote Desktop”-Port. Windows Remotedesktop.
5900 “VNC”-Port. Used by Virtual Network Computing to share desktops.
8080 “HTTP-Alt”-Port. Proxy and Caching Servers.
