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Network Scanning, Example of Common TCP Services & Corresponding Port…
Network Scanning
Types of TCP Scans (Jia Le)
FIN scan (-sF) FIN
Null scan (-sN) NULL (No Flag set)
Xmas scan (-sX) FIN, PSH & URG
SYN scan (-sS) SYN
Maimon Scan (-sM) FIN & ACK
ACK Scan (-sA) ACK
Window Scan (-sW) ACK
Custom Scan (--scanflags) ANY Flags
Nmap Options/Switch (zenn)
-O (operating system)
-p <port range> (scan specific port)
-sV (determine version info)
-T (set timing template)
-sC / --script=default(Run Default Scripts)
--traceroute (Run traceroute to target)
6 Types of Nmap Timing Template
T0: Paranoid
T1: Sneaky
T3: Normal
T5: Insane
T4: Aggressive
T2: Polite
Types of Port Status
Open
Filtered
Unfiltered
Closed
Open | Filtered
Closed | Filtered
Nmap Flag
URG
ACK
RST
SYN
PSH
FIN
Example of Common UDP Services & Corresponding Port
DNS (53)
SNMP (161/162)
DHCP(67/68)
RDP (3389)
IMAP (143)
Examples of Network Scanning Tools
Nmap
Nessus
Nexpose
Wireshark
Nmap Live Host Discovery (JIA LE)
ARP Scan (-PR) [ARP Request Packet]
ICMP Echo Scan (-PE)
ICMP Timestamp Scan (-PP)
ICMP Address Mask Scan (-PM)
Example of Common TCP Services & Corresponding Port (Doris)
SMB(445)
HTTP(80)
HTTPS(443)
FTP (20/21)
Telnet(23)
SSH(22)
SMTP (25)
IMAP(143)
POP3(110)