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Continue reading →: How to check network latency using Wireshark
To test network latency using Wireshark, follow these steps to effectively capture and analyze packet data:Setting Up Wireshark Install Wireshark: Download and install the latest version of Wireshark from the official website.Select the Network Interface: Open Wireshark and choose the appropriate network interface to capture packets. This is typically your…
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Continue reading →: What is DNS over HTTPS (DoH)
DNS over HTTPS (DoH) is a protocol that encrypts Domain Name System (DNS) queries and responses between a client (e.g., a web browser or operating system) and a DNS resolver (e.g., Quad9). This encryption protects DNS data from being intercepted, modified, or logged by third-party entities, such as Internet Service…
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Continue reading →: Connecting OSPF Areas without Virtual Links
To connect two OSPF regular areas without a virtual link, you can use a GRE (Generic Routing Encapsulation) tunnel. Here’s a step-by-step guide: Why GRE Tunnel? A GRE tunnel allows you to encapsulate OSPF packets within a GRE header, which can be routed through a non-OSPF area. This approach eliminates…
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Continue reading →: Python script to check if VDB databases are updated in Cisco FMC
To check if VDB databases are updated in Cisco FMC and print the results to an Excel file using Python, you can use the following approach: 1.Access Cisco FMC through API: Use the Cisco FMC API to retrieve the VDB database information. You can find more details about the API…
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Continue reading →: Key Features of Sliver Peak SD-WAN
Silver Peak, now part of Hewlett Packard Enterprise (HPE) Aruba, offers a software-defined wide-area networking (SD-WAN) solution, EdgeConnect. This comprehensive platform enables enterprises to transform their legacy WAN architectures into a robust, secure, and efficient SD-WAN. Benefits
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Continue reading →: Migrate APs from Old WLC to 9800Python script to move access points from an old WLC (Wireless LAN Controller) to a new Cisco Catalyst 9800 WLC: Example Code Snippets import netmiko old_wlc_ip = ‘192.168.1.100’old_wlc_username = ‘admin’old_wlc_password = ‘password’ ssh_conn = netmiko.Netmiko(hostname=old_wlc_ip,username=old_wlc_username,password=old_wlc_password) config_data = ssh_conn.send_command(‘show running-config’) 2.Processing data to extract AP information: import csv ap_info = []for…
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Continue reading →: How to set up AnyConnect VPN in Cisco Firepower Threat Defense (FTD)here’s a step-by-step guide on how to set up AnyConnect VPN in Cisco Firepower Threat Defense (FTD): Prerequisites Step 1: Configure Remote Access VPN Policy Step 2: Configure Client Profiles Step 3: Upload AnyConnect Images Step 4: Configure Remote Access VPN Connection Step 5: Save and Deploy Policy Step 6:…
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Continue reading →: SD-WAN vs VPN ComparisonSD-WAN: VPN: Comparison Highlights: In Summary: SD-WAN and VPN are both essential technologies for securing and managing network connections. SD-WAN is designed for large-scale, distributed networks, offering advanced features like traffic optimization and centralized management. VPNs, on the other hand, provide point-to-point encryption and are well-suited for smaller, more focused connections. When…
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Continue reading →: Deleting a Stuck Deployment Notification in Cisco FMC
Its frustrating it can be when a Cisco Firepower Threat Defense (FTD) deployment gets stuck and keeps showing up in notifications. Let’s sort it out this issue:
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Continue reading →: 25 Basic Linux Commands For BeginnersBasic Linux Terminal Commands S.No. Linux Commands Functions 1 Is Displays information about files in the current directory. 2 pwd Displays the current working directory. 3 mkdir Creates a directory. 4 cd To navigate between different folders. 5 rmdir Removes empty directories from the directory lists. 6 cp Moves files…
Hello,
Hey there, fellow nerds and net-surfers!
Welcome to my corner of the internet where I talk about the holy trinity of tech: Networking, Linux, and Security — or as I like to call it, “Ctrl+Alt+Fix-It”. If you’re into packet sniffing (the legal kind), hardening Linux boxes, or figuring out why your network is being as moody as a teenager, you’re in the right place.
This blog is where I dump useful knowledge, random tech rants, and occasional troubleshooting victories so future me (and hopefully you) can benefit. Expect bash scripts, firewall rules, sarcastic comments, and the occasional meme — because what’s IT without a little command-line chaos and caffeine?
Whether you’re a curious beginner or a battle-hardened sysadmin, I hope you’ll find something here to learn, laugh at, or copy-paste in desperation.
Welcome aboard — and may your logs always be verbose.
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The Lazy Networker 