Cisco Umbrella ISR4K Guest WiFi Silver Fixed SMS-1K | Guest Wi-Fi Security — UMBGW-4351S-SMS-1K

Protect guest wireless access without complicating the network. Cisco Umbrella ISR4K Guest WiFi Silver Fixed SMS-1K is a cloud security subscription designed for Cisco ISR 4K environments that need a practical layer of protection for guest traffic. By adding Cisco Umbrella controls, IT can apply DNS-layer security to help block access to malicious domains and other risky destinations before users connect. That is especially valuable in guest Wi‑Fi deployments, where access is intentionally broad and the attack surface is larger than in tightly managed corporate networks. This fixed subscription model is well suited to organizations that want predictable licensing for a defined deployment. It helps standardize security across branch offices, retail locations, and other distributed sites using ISR 4K infrastructure. Instead of relying on basic internet access alone, teams get a security layer that supports safer browsing and cleaner policy enforcement. For enterprises that need to justify every licensing dollar, this product adds measurable security value to guest access while preserving the operational simplicity of Cisco ISR 4K networking. Ideal For Securing guest Wi‑Fi in branch offices Adding web threat protection to retail wireless access Standardizing guest network policy across ISR 4K sites Reducing exposure on open wireless networks used by visitors Why This Product 1 Adds security controls beyond standard guest internet access 2 Built for Cisco ISR 4K guest Wi‑Fi deployments 3 Uses fixed subscription licensing for predictable planning 4 Helps protect open wireless access in distributed locations