Step-by-Step: Deploying eScan Web and Mail Filter for Small Businesses

eScan Web and Mail Filter — Complete Guide to Features and Setup

What it is

eScan Web and Mail Filter is a network-level security appliance/software that filters web traffic and email to block malware, phishing, spam, and inappropriate content before it reaches endpoints. It works as a gateway (on-premises or virtual) and inspects HTTP/HTTPS, SMTP/POP3/IMAP, and related protocols to enforce policies and scan for threats.

Key features

• Web filtering: URL categorization, allow/block lists, custom policies, time-based access controls.
• HTTPS inspection: SSL/TLS interception and scanning to detect threats in encrypted traffic (requires installing CA on clients).
• Email filtering: Spam detection, attachment scanning, MIME inspection, virus/URL scanning in email bodies and attachments.
• Antivirus/antimalware engine: Signature and heuristic-based detection, plus cloud reputation lookups.
• Anti-phishing and URL protection: Real-time URL reputation checks and sandboxing for suspicious links.
• Content filtering & DLP basics: Block by file type, keywords, or patterns to prevent data leakage (configurable rules).
• Application control: Allow/block or throttle web applications and categories (social media, streaming, etc.).
• Reporting & logs: Dashboards, detailed logs, scheduled reports, and real-time alerts.
• High availability & scalability: Options for clustering, virtual appliance support, and load balancing for larger deployments.
• Integration & authentication: LDAP/Active Directory integration, single sign-on support, and API access for management/automation.
• Management options: Centralized management console for policy deployment across multiple gateways/sites.

Typical deployment options

• Hardware appliance deployed at network edge.
• Virtual appliance (VMware, Hyper-V, KVM, cloud images).
• Hybrid: central appliance with distributed enforcement points for branch offices.
• Inline (transparent/proxy) modes depending on network topology.

Prerequisites & planning

• Network diagram and placement: identify gateway point for inbound/outbound web and mail traffic.
• Certificate plan: generate and distribute a trusted CA to client devices for HTTPS inspection.
• Capacity planning: estimate concurrent connections, mail volume, and throughput to choose appropriate appliance/specs.
• Authentication design: decide how users will be identified (AD integration, transparent vs. auth-proxy).
• Backup & HA needs: determine clustering, failover, and configuration backup schedules.

Step-by-step setup (concise)

1. Obtain appliance image or hardware and required licenses.
2. Connect appliance to network edge (between firewall and LAN or as designated proxy).
3. Assign management IP, set admin credentials, and secure console access.
4. Update firmware/signature databases to latest versions.
5. Configure time/NTP, DNS, and SMTP/relay settings.
6. Integrate with directory service (LDAP/AD) for user-based policies.
7. Import or create SSL/TLS certificate (install appliance CA on client devices).
8. Create baseline policies:
   • Default web filtering policy (categorization, allow/block lists).
   • Email filtering rules (spam thresholds, attachment handling).
   • Antivirus/heuristic scanning enabled for web and mail.
9. Enable logging and schedule daily/weekly reports; configure alert thresholds.
10. Test with a pilot group: verify web access, mail flow, and HTTPS inspection behavior.
11. Tune policies based on false positives/negatives, adjust thresholds and exemptions.
12. Roll out to full environment and monitor performance, logging,