Browsing Tag

enumeration

Port 53 – DNS

DNS (Domain Name System) uses both TCP and UDP port 53 The most commonly used port for DNS is UDP 53. This port is used when a computer, mobile etc.. connect with a DNS server to resolve a particular domain name. Domain Name System uses …

Port 161/162 – SNMP

SNMP (Simple Network Management Protocol) is an application layer protocol that use the UDP protocol to support and manage routers, hubs and switches other network devices on an IP network. SNMP protocol has been found enabled on a variety…

Port 88 – Kerberos

Kerberos is a protocol that is used for network authentication. Various versions are used by *nix and Windows. But if you notice a machine with port 88 (Kerberos ) open you can be fairly sure that it is a Domain Controller. So, if you…

Port 111/135 – RPC/MSRPC

Remote Procedure Call (RPC) is a protocol that one program can use to request a service from a program located in another machine on a network without having to understand the network's details. A procedure call is also sometimes known as a…

Port 25 – SMTP

SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving e-mail. It is normally worked with one of two other protocols, POP3 or IMAP, that allow the user to save messages in a server mailbox and download them…

Port 23 – Telnet

Telnet protocol considered insecure because it doesn't encrypt data. The protocol is old and is affected by various Code-Execution vulnerabilities, might be worth checking exploit-db.com for that. Brute force Telnet with Nmap: nmap -p…
SignupSubscribe to our newsletter to get the latest ethical hacking & penetration testing tutorials & resources.

Subscribe to our newsletter to get the latest ethical hacking & penetration testing tutorials & resources.