| Message Code | ASA-4-407002 |
| Severity | Warning |
| Description | Embryonic limit nconns/elimit for through connections exceeded.outside_address/outside_port to global_address (inside_address)/inside_port on interface interface_name |
| Explanation | This message is about connections through the adaptive security appliance. This message is displayed when the number of connections from a specified foreign address over a specified global address to the specified local address exceeds the maximum embryonic limit for that static. The adaptive security appliance attempts to accept the connection if it can allocate memory for that connection. It proxies on behalf of local host and sends a SYN_ACK packet to the foreign host. The adaptive security appliance retains pertinent state information, drops the packet, and waits for the acknowledgment from the client. |
| User Action | The message might indicate legitimate traffic, or indicate that a denial of service (DoS) attack is in progress. Check the source address to determine where the packets are coming from and whether it is a valid host. |
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