Port 161 hacktricks

1. What is port 161 and 162 used for?
2. What is SNMP 161?
3. Is SNMP port 161 TCP or UDP?
4. What is the difference between port 161 and 162?
5. Is SNMP a security risk?
6. What is SNMP attacks?
7. What is port 161 commonly used for?
8. What is the protocol for port 161?
9. Can SNMP be hacked?
10. Should port 161 be open?
11. Is UDP port 161 Secure?
12. What is port 162 used for?
13. What is SNMP used for?
14. Should port 161 be open?

What is port 161 and 162 used for?

SNMP uses both port 161 and port 162 for sending commands and messages. The "SNMP manager" at the head of your system sends commands down to a network device, or "SNMP agent," using destination port 161.

What is SNMP 161?

161. SNMP. Port 161 is the default port on network devices to which SNMP queries are sent during the discovery and monitoring processes. Defined in the column m_SnmpPort in the database table snmpStack.

Is SNMP port 161 TCP or UDP?

SNMP is a request/response protocol. UDP port 161 is its well-known port. SNMP uses UDP as its transport protocol because it has no need for the overhead of TCP.

What is the difference between port 161 and 162?

SNMP ports are utilized via UDP 161 for SNMP Managers communicating with SNMP Agents (i.e. polling) and UDP 162 when agents send unsolicited Traps to the SNMP Manager.

Is SNMP a security risk?

SNMP is known to be a common weak point in device security. Default, guessible, and hardcoded SNMP communities expose information and management capabilities to the network at large. The lack of encryption in SNMP v1 and v2 allow attackers to capture credentials sent by management tools.

What is SNMP attacks?

SNMP reflection is a volumetric DDoS threat which aims to clog the target's network pipes. As such, it can be countered by overprovisioning of network resources that will allow the target infrastructure to withstand the attack.

What is port 161 commonly used for?

Used by various devices and applications (including firewalls and routers) to communicate logging and management information with remote monitoring applications. Typically, SNMP agents listen on UDP port 161, asynchronous traps are received on port 162.

What is the protocol for port 161?

Port 161 Details. Simple network management protocol (SNMP). Used by various devices and applications (including firewalls and routers) to communicate logging and management information with remote monitoring applications. Typically, SNMP agents listen on UDP port 161, asynchronous traps are received on port 162.

Can SNMP be hacked?

If SNMP is allowed to remain open, hackers are able to obtain information such as ARP table network information, usernames and open TCP ports that can allow them to attack the system further.

Should port 161 be open?

If UDP ports 161 and 162 are open, then attackers have an opportunity to access your SNMP traffic, and potentially the opportunity to reconfigure your devices and disrupt normal operation. To combat this, you can block traffic to ports 161 and 162 at the firewall.

Is UDP port 161 Secure?

Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) but unlike TCP on Port 161, UDP Port 161 is connectionless and does not guarantee reliable communication; it's up to the application that received the message on Port 161 to process any errors and verify correct delivery.

What is port 162 used for?

Port 162 Details. Simple network management protocol (SNMP). Used by various devices and applications (including firewalls and routers) to communicate logging and management information with remote monitoring applications. Typically, SNMP agents listen on UDP port 161, asynchronous traps are received on port 162.

What is SNMP used for?

SNMP is used to collect data related to network changes or to determine the status of network-connected devices. Collecting this data can help IT professionals keep their finger on the pulse of all their managed devices and applications.

Should port 161 be open?

If UDP ports 161 and 162 are open, then attackers have an opportunity to access your SNMP traffic, and potentially the opportunity to reconfigure your devices and disrupt normal operation. To combat this, you can block traffic to ports 161 and 162 at the firewall.