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**This is a summary of the attacks exposed in** [**https://medium.com/@in9uz/cisco-nightmare-pentesting-cisco-networks-like-a-devil-f4032eb437b9**](https://medium.com/@in9uz/cisco-nightmare-pentesting-cisco-networks-like-a-devil-f4032eb437b9). Check it for further information.
## **Fake EIGRP Neighbors Attack**
- **Objective**: To overload router CPUs by flooding them with EIGRP hello packets, potentially leading to a Denial of Service (DoS) attack.
-`--interface`: Specifies the network interface, e.g., `eth0`.
-`--as`: Defines the EIGRP autonomous system number, e.g., `1`.
-`--subnet`: Sets the subnet location, e.g., `10.10.100.0/24`.
## **EIGRP Blackhole Attack**
- **Objective**: To disrupt network traffic flow by injecting a false route, leading to a blackhole where the traffic is directed to a non-existent destination.
-`--interface`: Specifies the attacker’s system interface.
-`--as`: Defines the EIGRP AS number.
-`--src`: Sets the attacker’s IP address.
-`--dst`: Sets the target subnet IP.
-`--prefix`: Defines the mask of the target subnet IP.
## **Abusing K-Values Attack**
- **Objective**: To create continuous disruptions and reconnections within the EIGRP domain by injecting altered K-values, effectively resulting in a DoS attack.
<summary><strong>Learn AWS hacking from zero to hero with</strong><ahref="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
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* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.