SNMP
SNMPSimple Network Management ProtocolMIB
SNMP (Simple Network Management Protocol) monitors network devices. Public/private community strings expose system information, running processes, and network configuration.
Ports
| Port | Protocol | Description |
|---|---|---|
| 161 | udp | SNMP |
| 162 | udp | SNMP trap |
Fingerprints
| Banner / Probe | Expected Response |
|---|---|
nmap -sV -p <port> <target> | Service banner and version info |
nc -nv <target> <port> | Raw banner grab |
Key Files
| Path | Description |
|---|---|
/etc/passwd | List of system users |
/etc/shadow | Password hashes for local users |
/etc/ssh/sshd_config | SSH server configuration |
~/.ssh/id_rsa | SSH private key |
Default Credentials
| Username | Password | Context |
|---|---|---|
admin | admin | Generic admin account |
root | root | Generic root account |
Known CVEs
| Identifier | Type | Description |
|---|---|---|
— | Info | Public community string default |
Exploitation Primitives
| Technique | Tool / Command | Result |
|---|---|---|
| SNMP Walk | snmpwalk -v2c -c public <target> | Full SNMP data dump |
| SNMP Brute | onesixtyone -c community.txt <target> | Community string brute force |
Notes
Always start with full port scan: `nmap -sV -sC -p- <target>`.
Check for default credentials before brute-forcing.
Use service-specific NSE scripts: `nmap --script <service>-* -p <port> <target>`.
Remember to check both IPv4 and IPv6 if applicable.
Seen on
ShodanCensysFOFAZoomEye
References