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Security Archives - CLI Warriors

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Security

Cisco IOS Router CA Server and Client configuration

  • J
  • Posted onJul 15, 2019 at 12:11 AM
  • 0 Comments
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
Cisco ASA - Active / Standby Failover
Cisco ASA - Active / Standby Failover
Security

Cisco ASA – Configure Active Standby Failover

  • J
  • Posted onJan 13, 2019 at 5:29 PM
  • 0 Comments
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 & SwitchingSecurity

How to encrypt all Cisco passwords

  • J
  • Posted onDec 15, 2018 at 9:01 PM
  • 0 Comments
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:
kali linux
kali linux
Emulation: GNS3 | EVE-NG | VIRLLinuxSecurity

How to install Kali Linux on Eve-NG

  • J
  • Posted onNov 17, 2018 at 7:31 PM
  • 0 Comments
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 …

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Configure Telnet on Cisco Router
Configure Telnet on Cisco Router
Routing & SwitchingSecurity

Configure Telnet on Cisco Router

  • J
  • Posted onOct 19, 2018 at 11:01 PM
  • 0 Comments
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.
console password
console password
Routing & SwitchingSecurity

Configure Enable Secret / Console Password and Timeout

  • J
  • Posted onOct 19, 2018 at 4:18 PM
  • 0 Comments
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
cisco access list acl
cisco access list acl
Routing & SwitchingSecurity

Configure Standard ACL Numbered | Cisco Router

  • J
  • Posted onOct 18, 2018 at 9:51 PM
  • 0 Comments
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
Errordisable
Errordisable
Routing & SwitchingSecurity

Errordisable Recovery | Cisco Switch

  • J
  • Posted onOct 9, 2018 at 11:41 PM
  • 0 Comments
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.
Port Security mac sticky
Port Security mac sticky
Routing & SwitchingSecurity

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

  • J
  • Posted onOct 2, 2018 at 11:30 PM
  • 0 Comments
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.
Cisco Netflow
Cisco Netflow
Routing & SwitchingSecurity

IOS Netflow configuration for Cisco routers

  • J
  • Posted onSep 23, 2018 at 11:12 PM
  • 0 Comments
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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    Recent Content

    • Cisco switch show MAC address lookup
      • Started by J
      • Comments: 0
    • Cisco IOS Router CA Server and Client configuration
      • Started by J
      • Comments: 0
    • Cisco ASA – Configure Active Standby Failover
      • Started by J
      • Comments: 0
    • How to backup a Cisco Router | Switch Configuration using TFTP
      • Started by J
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    • How to encrypt all Cisco passwords
      • Started by J
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