Security Archives - CLI Warriors | CLI Warriors Community

Cisco IOS Router CA Server and Client configuration

In this post router R-CA will be our CA Server and R-Client will request a certificate from R-CA. R-CA – Certificate Authority Configuration CA Server Verification R-Client Configuration R-Client Verification

Security

Cisco ASA – Configure Active Standby Failover

This post describes how to configure two Cisco ASA’s in Active / Standby Fail-over configuration. The standby ASA will take over a failed unit. Topology Configuration: ASA-Primary Configuration: ASA-Secondary Verification:

Routing & Switching Security

How to encrypt all Cisco passwords

Setting the “service password-encryption” will encrypt all passwords in the show running-config Ex. Enable and Line clear text passwords. Passwords are encrypted with the MD5 hashing algorithm. Before applying: service password-encryption Enable: service password-encryption Verification:

Emulation: GNS3 | EVE-NG | VIRL Linux Security

How to install Kali Linux on Eve-NG

Kali Linux is a Debian based distribution designed for digital forensics and penetration testing. Maintained by Offensive Security Ltd. Login as root to Eve-NG Pro (will not work on community version) From the web-gui add the new Kali Linux Docker to your workspace From the template select the eve-kali image, name your pc, adjust the …

Configure Telnet on Cisco Router

Telnet allows you to remotely manage a Cisco router over a TCP connection. Keep in mind that telnet is not secure and everything is transmitted in clear-text.

Routing & Switching Security

Configure Enable Secret / Console Password and Timeout

In this lab we will configure the enable secret and console passwords to help secure your routers and switches from unauthorized access. We will also configure the console timeout to 10 minutes. ConfigurationEnable Secret Password Console password & Timeout Verification

Routing & Switching Security

Configure Standard ACL Numbered | Cisco Router

You can use a Standard Access Control List to allow or deny traffic to a host, network, or any host. In our example below we will deny traffic from the 20.20.20.0/24 to the 10.10.10.0/24 network Topology used: Router-on-a-stick Configuration VerificationOur pings begin to drop from PC-2 to PC-1 after applying the ACL to interface Gi0/0.20

Routing & Switching Security

Errordisable Recovery | Cisco Switch

In this example we will recover from a Port Security Mac Sticky violation after 30 seconds. From the output below you can see that we can recover from multiple different types of failures.

Routing & Switching Security

How to configure Port Security (mac sticky) on Cisco Switches

Port Security is enabled per port and the switch port will only allow traffic from the learned MAC address to be forwarded. In our example below we will set a maximum of one MAC address to be dynamically learned and in the event of a violation the port will shutdown.

Routing & Switching Security

IOS Netflow configuration for Cisco routers

Using the example below you will be able to configure a router with Netflow for Cisco Stealthwatch. Netflow was developed by Cisco and it provides the ability to collect IP network traffic.

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Security Archives - CLI Warriors

Cisco IOS Router CA Server and Client configuration

Cisco ASA – Configure Active Standby Failover

How to encrypt all Cisco passwords

How to install Kali Linux on Eve-NG

Configure Telnet on Cisco Router

Configure Enable Secret / Console Password and Timeout

Configure Standard ACL Numbered | Cisco Router

Errordisable Recovery | Cisco Switch

How to configure Port Security (mac sticky) on Cisco Switches

IOS Netflow configuration for Cisco routers

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