Algonquin, IL · Serving Chicagoland since the early ’90s
Networks that stay up. Help that picks up.
CelluLan designs, secures and maintains the network infrastructure local businesses run on — firewalls, site-to-site VPNs, Wi-Fi and the rest — so you can relax and grab a cup of coffee.
What we do
The plumbing your business runs on.
01
Network design & installation
Switching, routing and structured LANs planned around how your office actually works — documented so nothing is a mystery later.
02
Firewalls & security
Business-grade firewalls configured, patched and watched. Sensible rules, segmented networks and endpoint protection.
03
Site-to-site VPN
Tie offices, warehouses and remote staff together over encrypted tunnels so every location works like one network.
04
Business Wi-Fi
Coverage that reaches the back room, separate guest access, and access points you can manage from one place.
05
Internet & cellular failover
We deal with the ISP for you and add LTE/5G backup, so a cut line doesn't take your business offline.
06
Maintenance & support
Ongoing updates, backups and monitoring — and a real person who knows your setup when something goes wrong.
STEP 01
Assess
We walk the site, map what you have and find the weak spots — single points of failure, open ports, aging gear.
STEP 02
Build
We put in the right equipment, configure it properly and leave you with documentation and passwords you control.
STEP 03
Maintain
We keep it patched, backed up and running, and we're a phone call away when you need us.
30+
Years keeping Chicagoland connected
Local, hands-on, and still answering the phone.
CelluLan, Inc. has been providing IT services to clients in the greater Chicago area since the early '90s. From our base in Algonquin we manage and maintain network infrastructure and security for businesses that would rather not think about either.
You won't get a ticket queue or a different technician every time. You get people who know your network, can be on site when it matters, and tell you plainly what you need — and what you don't.
Ready to accelerate your business?
Tell us what you're working with. We'll tell you what it needs.