#InvestigationMethodology #Network

Port	Protocole	Transfer Protocol	Secure	Secure version
20	FTP - Data	UDP	No
21	FTP - Transfer	TCP	No	Today we use SFTP and FTPS for a secured connection
22	SSH	TCP	Yes
23	Telnet	TCP	No	Replaced by SSH
25	SMTP (Simple Mail Transfer Protocol)	TCP	No	465 - SMTPS 587 - STARTTLS
53	DNS	TCP + UDP	No	DNSSEC
67	DHCPCli	UDP	N/A
68	DHCPSRV	UDP	N/A
80	HTTP	TCP	No	443 - HTTPS
110	POP3	TCP	No	995 - POP3S
135	NetBIOS	UDP	N/A
139	SMB	TCP	N/A
143	IMAP	TCP	No	993 - IMAPS
163	SNMP	UDP	Yes	Secure since V3
389	LDAP	TCP	No	636 - LDAPS
443	HTTPS	TCP	Yes
513	rlogin
2049	NFS	TCP	Yes	Since version V4
3389	RDP	TCP	Yes