Updated October 2026 · For bank and credit union IT and operations leaders
Banks and credit unions depend on secure, always-on connections for core banking, ATMs, online banking support and branch operations. Regulators expect strong controls, and members expect no interruptions.
These five networking essentials form the foundation.
- Secure, dedicated connectivity at every branch.
- Redundant paths so branches never go dark.
- Segmentation protects sensitive systems.
- Monitoring and logging support compliance.
1. Dedicated, Secure Connectivity
Branches need reliable bandwidth for core systems, imaging and video. dedicated fiber or fixed wireless internet in Detroit provides dedicated, symmetrical service.
2. Branch SD-WAN
SD-WAN links branches with encrypted tunnels, prioritizes critical applications and centralizes management. See our SD-WAN guide.
3. Redundancy
Every branch should have two diverse connections with automatic failover, so tellers, ATMs and phones keep working during outages. Learn more about backup internet.
4. Segmentation
| Network | Contents |
|---|---|
| Core banking | Teller and back-office systems |
| ATMs | Isolated ATM traffic |
| Staff | Email and productivity |
| Guest | Lobby Wi-Fi |
| Security | Cameras and alarms |
Member and Customer Experience
Lobby Wi-Fi, digital signage, video banking and appointment systems all rely on the branch network. Keeping these on separate networks from core banking protects sensitive systems while still giving members a modern experience in the branch.
Planning Branch Upgrades
- Inventory current connections and contracts at each branch.
- Add a diverse backup connection where none exists.
- Pilot SD-WAN at one or two branches.
- Standardize segmentation and monitoring across all locations.
5. Monitoring and Logging
Continuous monitoring, alerting and log retention help detect issues early and support audits and compliance programs.
Strengthen your branch network
Talk to a local team about secure, redundant connectivity.
Frequently Asked Questions
Do bank branches need backup internet?
Yes. Diverse backup connections keep tellers, ATMs and phones online.
Is SD-WAN secure enough for banks?
Yes. SD-WAN encrypts traffic between sites and supports segmentation and central policy.
Should lobby Wi-Fi be separate?
Yes. Guest Wi-Fi must be isolated from banking systems.
