Efficiency, Redefining Network Security Responsively

Control the Web. Without Disrupting the Network

Our Services

Underscore’s Safe Internet Access (SIA) provides a cost-effective, non-intrusive, and scalable solution that enables service providers to enforce internet use policies with precision and speed.

Advanced Protocol Visibility & Control

L3–L7 inspection across HTTP, HTTPS, SSH, Telnet, and email protocols with customizable policy enforcement.

Passive Tap Mode Deployment

"Deployed out-of-band using mirrored traffic, SIA enforces policies without changes to routing, firewalls, or infrastructure—ensuring zero latency or downtime."

High-Speed, Asymmetric Routing Support

Supports up to 40 Gbps traffic and supports asymmetric routing, ensuring consistent filtering across complex networks.

Enhanced Resilience

Proactively stops attacks, even against the most secure communications such as ECH, QUIC, DoH, DoT, and ODoH.

Selective Application Prevention

Allows granular control, such as restricting messaging apps during critical periods without imposing a complete internet ban.

Regulatory Compliance

Helps meet industry and regulatory guidelines with precise policy enforcement and reporting.

Block What You Must. Maintain What You Trust.

Data Sovereignty Assurance

Blocks data transfers to or from entities owned by foreign or hostile entities, safeguarding sensitive assets.

Policy Management

One-Click Policy Delivery to Multiple Devices
Rule and Blocklist Updates Without Service Interruptions.
Support for Huge Blocklists

Underscore Safe Internet Access meet stringent regulatory requirements without compromising on performance, network integrity, or uptime.

Drop/Close Connections in Inline Mode - Enforces blocking policies in real-time, ensuring malicious traffic is stopped in inline deployment mode.

Single Response Interface to Terminate Offending Communications - Utilizes a unified response mechanism to promptly terminate malicious or unauthorized connections, enhancing operational efficiency.

Layer 2 (L2) Failover Support - Maintains high availability and redundancy at the data link layer, ensuring continuous operations even in the event of hardware or link failures

Single-Arm Mode for Multiple Networks - Enables seamless traffic monitoring across multiple networks using a single system, ensuring broad visibility with minimal deployment complexity.

Protocol support -

Naming Services: DNS, DNS over HTTPS (DoH), etc.
Web Traffic: HTTPS, SSL/TLS, QUIC
File Transfer Protocols: FTP, TFTP, FTPS
File Sharing Platforms: Dropbox, Google Drive, Microsoft Office 365
Remote Access: SSH, Telnet, AnyDesk, etc
Meeting Platforms: Teams, Zoom, Zoho, Google Meet, WebEx
Chat and OTT Services: WhatsApp, LinkedIn, Facebook, Telegram, Signal, Gaming Chats, QQ, Ku

Use Cases

URL Filtering

Enforce category-based or, threat-intel correlated preventive policies for HTTP, HTTPS, and QUIC protocols.
Works in both – Single-Arm (HTTP and HTTPS) and, Inline mode.
Request/Response based preventive policies for Web traffic over HTTP protocol.

Prevent Data Theft

Block access to file-sharing protocols and applications from sensitive segments.
DPI (Deep Packet Inspection), FQDN, and IP lists tuned & curated to address data privacy and performance concerns.

Volumetric Attack Management

Use correlation and threshold analysis to detect and mitigate volumetric attacks by dropping malicious communications based on traffic patterns.

Application Outage Prevention

Detect and prevent exploitation of protocol weaknesses, such as deliberately exhausting server resources by delaying SYN-ACK responses after server ACK.

Command and Control (C2) Disruption

Block hosts attempting to connect to blocklisted C2 infrastructure, ensuring proactive threat containment.

IP Intelligence Integration

Utilize IP intelligence to drop targeted communication, such as blocking all mobile traffic during critical operations.

SIA Frequently Asked Questions

Visit the frequently asked questions page to know more.