# memcachereflection

**Explanation**

Memcached is an open source distributed memory caching system that is commonly used by web servers to speed up dynamic database-driven websites. Reflection attacks involve sending a request to a vulnerable server and forging its IP address, causing the server to send a much larger response back to the victim than the original request. This type of attack can cause significant network congestion and disrupt services.

**What to Look For**

To examine the results of the memcachereflection event, look for incoming traffic on port 11211 (the default Memcached listening port) that appears to be spoofed. The attacker will typically send a request to a vulnerable Memcached server with a forged source IP address that matches the target victim, causing the server to send a much larger response to the victim than the original request. This type of attack can cause significant network congestion and disrupt services. It is important to identify the attacker's IP address and block it to prevent further attacks.

**Related MITRE ATT\&CK Categories**

[Impact: Network Denial of Service, Technique T1498 - Enterprise](https://attack.mitre.org/techniques/T1498)


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