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Available for new projects
Reliable servers, networks & email – engineered to last.
I’m Inder Kochar, a freelance systems & network engineer. I design, secure and support Windows and Linux infrastructure, Exchange and Postfix mail, and fast WordPress sites for businesses in India, Australia and beyond.
- 35+ years in IT
- India & Australia
- Security-first
- Remote & on-site
20+Free engineering tools on this site
1998-2026Microsoft Windows & Exchange Server generations managed
2018–2026Postfix /Dovecot Mail Server
2018-2026Linux Server Generation Managed
What I do
End-to-end IT, from the server room to the inbox.
One engineer who understands the whole stack – so problems get solved at the root, not passed between vendors.
Servers & infrastructure
Windows Server and Ubuntu builds, Active Directory and Group Policy, DNS and DHCP, VMware and Hyper-V virtualisation, and backups you can actually restore from.
Networking & security
Network design, VLANs, firewalls and VPNs, IPv6 roll-outs, SSL and hardening – so the network is fast, segmented and safe by default.
Email systems
Microsoft Exchange (2010–2019) and Linux mail with Postfix and Dovecot: deployments, migrations and deliverability with SPF, DKIM and DMARC.
Web & WordPress engineering
Fast, secure, SEO-friendly websites on tuned LEMP servers, plus custom WordPress plugins for bookings, payroll, ticketing and more.
E-commerce
Online stores on WooCommerce, Shopify and Magento – secure checkout, reliable hosting and integrations that keep orders flowing.
Managed support
Ongoing maintenance, monitoring and remote support with a proper ticket system and agreed response times – one engineer who knows your setup.
Free tools
The utilities I use every day – free for you too.
Subnet calculators, config generators and mail-record checkers. They run in your browser, need no sign-up and store nothing.
Network
IPv4 Subnet Calculator
Network, broadcast, usable host range, wildcard mask and binary view for any IPv4 address and CIDR prefix.
Open tool LinuxNetplan YAML Generator
Generate a correct Netplan file for a static IP or DHCP on Ubuntu 18.04 to 26.04 – with the right gateway syntax, file permissions and apply commands.
Open tool Email & DNSSPF, DKIM & DMARC Checker
Check a domain’s MX, SPF, DMARC and DKIM records in one go, with plain-English findings and fixes for common mistakes.
Open tool Email & DNSDNS Lookup
Look up A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV and PTR records for any domain or IP address.
Open tool WindowsWindows Repair Command Generator
Pick the problem – corrupt system files, update failures, network trouble, disk errors – and get the right SFC, DISM, chkdsk or netsh sequence in the right order.
Open tool LinuxNginx Server Block Generator
Production-ready Nginx server blocks for WordPress/PHP-FPM, static sites and reverse proxies – HTTPS, HTTP/2, www redirect and security headers included.
Open toolSelected work
Websites I’ve built – and still look after.
Restaurants, schools, shops and consultants in India and Australia – designed, built and hosted with business email that reaches the inbox.
Manjit’s Indian Restaurant
A family Indian restaurant serving the Illawarra since 1991 – with table bookings, takeaway ordering and gift cards built into the site.
View project
Anil Gaba Photography
A gallery and print shop for a photographer with 35+ years of work – pick size, paper and frame and see the price update instantly.
View project
St. Farid Public School
The website of a CBSE-affiliated school founded in 1976 – notices, admissions, fees, mandatory disclosure and logins for students and staff.
View project
Perfect Excel Studies
Study-visa counselling since 1993 – country guides, appointment booking and an online assessment form that brings in qualified enquiries.
View project
Kochar Financial Services
A customer-service centre since 2017 – banking, loans, Aadhaar, FASTag, insurance and bill payments, with a loan enquiry form and useful tools.
View project
Computer Bazar
India’s multi-vendor tech marketplace – laptops, components and accessories from verified sellers, and a sign-up path for new vendors.
View projectHow I work
A clear process, with no surprises.
- 01
Assess
A review of your current setup – risks, bottlenecks and quick wins – in plain language.
- 02
Design
A documented plan with options, costs and a timeline you approve before any work starts.
- 03
Build
Careful implementation in agreed change windows, with testing and a rollback plan at every step.
- 04
Support
Hand-over documentation, monitoring and ongoing help through tickets or a support plan.
- Windows Server
- Active Directory
- Group Policy
- Exchange Server
- Ubuntu Server
- Postfix
- Dovecot
- Nginx
- Apache
- IIS
- VMware
- Hyper-V
- DNS / DHCP
- SPF · DKIM · DMARC
- IPv6
- WordPress
- WooCommerce
- Shopify
- Magento
- Acronis
Why clients stay
Technology can be simple and powerful.
You are what you build. I design systems that are secure, efficient and scalable – and I document them so you are never locked in.
More about me →Hands-on, end to end
Hardware, operating systems, network, mail and web – one point of contact who sees how it all connects.
Secure by default
Least privilege, patching, tested backups, SPF/DKIM/DMARC and hardened servers are part of every job, not extras.
Documented and transparent
Clear hand-over notes, passwords in your vault and plain-English reports – your systems stay yours.
Two-country experience
Projects across India and Australia, working remotely across time zones or on-site when it matters.
Guides & tips
Fixes from real support work.
Fix a Slow or Unstable Windows PC with DISM and SFC
Repair corrupted system files with Windows’ own tools – DISM first, then SFC – before reaching for third-party “optimisers”.
IPv6 Toolkit: Convert, Validate and Subnet IPv6 Addresses
Four free IPv6 tools in one place – address converter, validator, subnet calculator and a one-page cheat sheet.
Got an infrastructure headache?
Tell me what’s happening – I’ll reply within one business day with next steps, whether that’s a quick fix or a proper plan.