# Pahalawan Singh – Network Security Engineer

> Personal Portfolio Website

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## Sitemaps

- [XML Sitemap](https://psnetworks.in/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Blog](https://psnetworks.in/blog/): How to Upgrade Aruba Controller Firmware: A Step-by-Step Guide......
- [Cisco IOS-XE Upgrade : Easy Step-by-Step Guide 2026](https://psnetworks.in/cisco-ios-xe-upgrade-easy-step-by-step-guide-2026/): Purpose This Blog defines the standardized process for upgrading Cisco Catalyst 9200L switches running Cisco IOS-XE software in an enterprise environment. Cisco IOS-XE Upgrade : Easy Step-by-Step Guide 2026 Scope Applicable to Cisco Catalyst 9200 Family standalone and stack deployments operating in Install Modd's Change Impact Assessment - Cisco IOS-XE Upgrade : Easy Step-by-Step Guide
- [Aruba Admin Login Setup with Azure MFA – Easy 2026](https://psnetworks.in/aruba-admin-login-setup-with-azure-mfa-easy-2026/): Aruba Admin Login Setup with Azure MFA – Easy 2026
- [Seamless Palo Alto to Fortinet IPsec VPN: The Ultimate 2026 Success Guide](https://psnetworks.in/seamless-palo-alto-to-fortinet-ipsec-vpn/): Palo Alto ↔ Fortinet (FortiGate) Site‑to‑Site IPsec VPN — Complete Guide (Config, Troubleshooting, Verification) 2026 Author: Pahalawan Singh | Last updated: 17 Mar 2026 | Estimated read: 15–20 minutes Overview This field‑tested Seamless Palo Alto to Fortinet IPsec VPN: The Ultimate 2026 Success Guide — Complete Guide lab guide shows how to configure a site‑to‑site
- [IPSec VPN Configuration Guide - Palo Alto Master of 2026](https://psnetworks.in/ipsec-vpn-configuration-guide-palo-alto/): This guide outlines the configuration of a Site-to-Site IPsec VPN on Palo Alto Networks firewalls, detailing key steps for Phase 1 (IKE Gateway) and Phase 2 (IPSec Tunnel). It emphasizes prerequisites like public IP reachability, matching crypto profiles, and NTP setup, promoting IKEv2 for optimal performance and reliability.
- [Fast and Secure Aruba AOS Upgrade Process](https://psnetworks.in/aruba-aos-upgrade-process-step-by-step-guide/): Aruba AOS Upgrade Process: Step-by-Step Guide Network Engineers ke liye Aruba Controller ya Gateway ko upgrade karna ek critical task hota hai. Agar process sahi na ho, toh downtime ka khatra rehta hai. Is blog mein hum Aruba AOS upgrade process ArubaOS (AOS) ko upgrade karne ka sabse safe aur optimize tarika dekhenge. 1. Pre-Upgrade

## Pages

- [Home](https://psnetworks.in/): Pahalawan Singh — Senior Network Security Engineer focused on secure, automated, and high‑availability enterprise network architecture.
- [About](https://psnetworks.in/about/): About Me Securing and Optimizing Enterprise Networks I am a Network Security Engineer specializing in designing, securing, and optimizing enterprise‑grade networks. My work focuses on high availability, low latency, and secure communication across branch, data center, and cloud environments. With hands‑on experience in Cisco Routing & Switching, SD‑WAN, Palo Alto, Fortinet, VPNs, and network automation,
- [Shop](https://psnetworks.in/shop/)
- [Network Design](https://psnetworks.in/network-design/): Network Design & Architecture Designing secure, scalable, and high‑availability enterprise networks. I am a Network Security Engineer with hands-on experience in Cisco Routing & Switching, SD-WAN, Palo Alto, Fortinet, and high-availability network designs. My focus is on building reliable, low‑latency, and secure infrastructures that support business‑critical operations. • End-to-end network architecture design• High-availability (HSRP/VRRP) topologies•
- [SD‑WAN Deployment](https://psnetworks.in/sd-wan-deployment/): SD‑WAN Deployment & Optimization Designing, deploying, and optimizing SD‑WAN architectures for secure, resilient, and low‑latency enterprise connectivity. I specialize in deploying and managing SD‑WAN architectures designed for high performance, security, and reliability. My experience includes building and managing Cisco SD‑WAN fabrics using vManage, vSmart, and vBond, optimizing traffic policies, and ensuring seamless failover between MPLS,
- [Privacy Policy](https://psnetworks.in/privacy-policy/): Who we are Our website address is: https://psnetworks.in. Comments When visitors leave comments on the site we collect the data shown in the comments form, and also the visitor’s IP address and browser user agent string to help spam detection. An anonymized string created from your email address (also called a hash) may be provided
- [Contact](https://psnetworks.in/contact/): Contact +91 93240 81042 Monday - Friday from 7am - 5pm Mumbai, Maharashtra Mumbai, India 400070 pahalwan.singh.1943@gmail.com Available for freelance & full-time opportunities. Get In Touch Please enable JavaScript in your browser to complete this form.NameEmailComment or MessageSend Message
- [Firewall Engineering & Security Policies](https://psnetworks.in/firewall-engineering-security-policies/): Firewall Engineering & Security Policies Deploying, configuring, and optimizing next‑generation firewalls for secure, scalable, and reliable enterprise networks. I specialize in deploying and managing enterprise-grade next‑generation firewalls, including Palo Alto and Fortinet. My work focuses on designing secure perimeter defenses, implementing access control policies, and ensuring deep visibility into network traffic.I work extensively with NAT,

## Categories

- [Palo Alto_Firewall](https://psnetworks.in/category/palo-alto/): Step-by-step guides and troubleshooting for Palo Alto Firewalls.
- [Aruba_Wireless](https://psnetworks.in/category/aruba-wireless/): Master Aruba Wireless technologies, from ArubaOS upgrades to Mobility Controller configurations. Explore step-by-step guides on enterprise Wi-Fi 6 deployment, RF optimization, and secure NAC integration.
- [Fortinet_Firewall](https://psnetworks.in/category/fortinet-firewall/): Explore comprehensive Fortinet FortiGate tutorials, from initial setup and SD-WAN configuration to advanced Security Fabric integration. Master FortiOS features, VDOMs, and high-performance firewall policies with our step-by-step lab guides.
- [Cisco](https://psnetworks.in/category/cisco/)

## Tags

- [Aruba AOS](https://psnetworks.in/tag/aruba-aos/)
- [IPsec VPN](https://psnetworks.in/tag/ipsec-vpn/)
- [Palo Alto Firewall](https://psnetworks.in/tag/palo-alto-firewall/)
- [IPSec VPN Configuration](https://psnetworks.in/tag/ipsec-vpn-configuration/)
- [Site-to-Site VPN](https://psnetworks.in/tag/site-to-site-vpn/)