Cisco ASA Audit Event: 202010

Cisco ASA Events

The logs of network perimeter devices such as firewalls, antivirus applications and intrusion prevention systems contain crucial information that helps to pre-emptively block security attacks and breaches. Hence, it's mandatory for you to monitor and audit these logs. Because Cisco ASA provides the combined functionality of all the three, it becomes all the more important to monitor its logs. 

ManageEngine's EventLog Analyzer, a comprehensive log management solution, collects and analyzes the log data from Cisco ASA devices, triggers alerts and generate reports on detected security incidents thus helping you to take suitable measures against security threats, if any. 

Cisco » 202010: NAT or PAT pool exhausted

202010: NAT or PAT pool exhausted

Cisco ASA is a security device that provides the combined capabilities of a firewall, an antivirus, and an intrusion prevention system. It also facilitates virtual private network (VPN) connections.It helps to detect threats and stop attacks before they spread through the network.

Message: %ASA-3-202010:[NAT | PAT] pool exhausted forpool-name ,port range [1-511 | 512-1023 | 1024-65535]. Unable to create protocol connection fromin-interface:src-ip/src-port to out-interface:dst-ip/dst-port.

Event 202010 is generated when the ASA does not have any more address translation pools available. The message contains information on the:

  • Name of the PAT or NAT pool.
  • Protol used to create the connection.
  • Ingress interface.
  • Source IP address and port number.
  • Egress interface.
  • Destination IP address and port number.

How could you resolve this situation?

Use the 'show nat pool'and 'show nat detail'commands to determine why all addresses and ports in the pool are used up. If this occurs under normal conditions, then add additional IP addresses to the NAT/PAT pool.

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