Articles with the tag: #cisco
Testing for Cisco security vulnerabilities with Ansible
In this blog post I'm demonstrating how to test for Cisco security vulnerabilities with Ansible.
NetFlow with Elastic-Stack
This blog post shows how to setup a NetFlow collector with Elastic-Stack, Fleet and Elastic-Agent. NetFlow data is sent by a Cisco ASA Firewall cluster.
Cisco Wireless Intrusion Detection Events to Elastic-Stack
In this blog post I'm showing how to get Wireless Intrusion Detection Events from Cisco's WIDS included in Cisco's Wireless Controllers into an Elastic-Stack.
802.1X Switch port is amber when only IP Phone is connected
When 802.1X (wired) is configured on a 3750G switch, the port LED is amber when only an IP Phone is connected (mab). When connecting on the IP Phone a downstream device like a laptop (dot1x), the port LED goes to green.
Login-Block (DoS and Dict-Attack Protection) in Cisco IOS
Cisco offers a method to protect against DoS (Denial-of-Service) and Dictionary attacks for IOS devices called Login-Block.
Synology DiskStation to Cisco Core Switch redundant setup with LACP
Configuration of LCAP (Link Aggregation Control Protocol) for Synology DiskStation and Cisco Switch.
Cisco SSM On-Prem Upgrade procedure
This is another blog post for Cisco SSM On-Prem server where I'm showing the upgrade process.
Cisco ISE admin password lifecycle and reset
Quick notes about Cisco Identity Services Engine password lifetime and admin password reset.
Cisco SSM On-Prem password recovery procedure
For a Cisco Smart Software Manager Test Drive installation I used the older version 8-202010 and I wanted to perform an upgrade to the latest version 8-202108. And of course it is a test drive, I did not save or wrote down the password :). In this document I'm describing how to perform a password recovery for a Cisco SSM On-Prem installation.
Troubleshooting SFP transceivers and Packet captures
In an older blog post I was writing about "Useful Cisco Commands for Troubleshooting cable problems". In this blog post I'm showing an additional, useful commands for Fiber Optics troubleshooting and packet capturing on Cisco switches.
Cisco WLC - No secured WebUI after failover switching
Cisco WLC 3504 secured WebUI is not working on Secondary Unit in a failover (SSO) setup. When switched back to the Primary Unit, the secured WebUI is working again. Troubleshooting and solution of this strange behavior.
Integration of Nextbox UI Topology Viewer in Netbox
In this blog post I'm showing how to integrate NextBox UI Plugin into my Netbox installation. NextBox UI Plugin is a topology visualization plugin which is based on Cisco's neXt toolkit.
WiFicalypse 2021
WiFicalypse 2021, FragAttacks. Design and Implementation flaws in WiFi.
Check in of configuration files to a Gitlab server
This is the third part of a series of blog posts about Cisco configuration backup with Netbox and Gitlab. This blog post covers the check in of configuration files to a Gitlab server
Low Level Device functions for backup with Netbox and Gitlab
This is the second part of a series of blog posts about Cisco configuration backup with Netbox and Gitlab. This blog post covers the low level functions to connect to network devices with pexpect.
Cisco configuration backup with Netbox and Gitlab
This is the first part of a series of blog posts about Cisco configuration backup with Netbox and Gitlab. It covers the connection to the Netbox API and to get the data of network devices with the pynetbox filter function.
Fritzbox on redundant ASA Firewall
Setup of two redundant Cisco ASA firewalls on a Fritzbox cable modem with Non-routed transfer network to keep the "PC-MAC"/"exposed host" configuration on Fritzbox during ASA failover switching
Cisco Smart Software Manager Test Drive
Cisco Smart Software Manager (SSM) On-Prem Test Drive installation, Virtual Machine setup and first steps in the Web UI
Learning material for network automation
Learning material for network automation with books, videos, podcasts, courses and API, libraries and tools
Why 2.4 GHz WiFi is bad
Cisco CleanAir quality report for 2.4GHz WiFi in my area
Useful Cisco Commands for Troubleshooting cable problems
Useful Cisco Commands for Troubleshooting problematic cabling (Cat.x and Fiber optics).
Cisco Live 2020 Barcelona
Cisco Live 2020 Barcelona, Day #1 - A cat and mouse Game, Day #2 - Attack Kill Chain and Packet Capturing, Day #3 - About Garlic and Onions and Industrial automation, Day #4 - Catalyst 9000 Access Switching Architecture and Resolving Network Faults Faster through Automating Entire Fault Management, Day #5 - SD-WAN, deployment strategies, managing and monitoring
Replacing faulty memory for Cisco ASA-5520
Replacing faulty memory for Cisco ASA-5520, checking memory and failover
Cisco ASA5520 stuck at Booting system, please wait…
Cisco ASA5520 stuck at Booting system, please wait... and how to check for faulty memory
Convert Cisco lightweight AP to standalone AP
The procedure how to convert a Cisco lightweight AP to a standalone AP
Cisco Unified IP Phone 7975G with Sipgate
Cisco Unified IP Phone 7975G with Sipgate, from configuring switches, setting up DHCP and TFTP, and do the correct SEPMAC.cnf.xml file configuration and firewall ACL.
Connecting to Cisco console with Linux
Connecting to Cisco console with Linux
Creating ROOT-CA-based certificates for Cisco Wireless Controller
Creating ROOT-CA-based certificates for Cisco Wireless Controller
Blocking Facebooks networks on ASA firewall
Blocking Facebooks networks on ASA firewall
Setting up Cisco 3504 series wireless controller redundancy
Setting up Cisco 3504 series wireless controller redundancy
Setting up administrative RADIUS logins on AIR-AP2800 with Mobility Express
Setting up administrative RADIUS logins on AIR-AP2800 with Mobility Express
Activate CLI Commands on Lightweight AP
A Trick to activate CLI Commands on Cisco Lightweight AP
Saveconfig Backup scripts
saveconfig, two scripts to backup configuration files from network devices
Create ASA Firewall rule from Talos IP Blacklist
A simple bash script to create ASA Firewall rules from Talos IP Blacklist
WiFi Spectrum Analysis
WiFi Spectrum Analysis with Cisco 3600 Series AP and Outdoor antenna
Convert Cisco 2600 Series Access Point
Short instructions how to convert a Cisco 2600 Series Access Point
Common Cisco switch port errors
Overview of common Cisco switch port errors and causes
Secure Cisco console with AAA
How to secure the Cisco console with AAA
New Cisco switch for my network
New Cisco switch for my network: WS-C3750G-24TS-S1U
Move SSH port on Cisco devices
How to move SSH port on Cisco devices to another port than TCP/22