Comodo KoruMail

• Introduction To KoruMail Secure Email Gateway
• Korumail Deployment Process
• Access The System
  • Access Via CLI Console
  • Access Via Web Console
  • The Main Interface
• The Dashboard
  • System Usage Graphics
  • About Software
  • Change Your Password
• User Management
  • Manage Admins And End Users
    • Manage Admins
    • Manage End Users
  • Manage Groups
• System Configurations
  • Network Configuration
    • Interfaces
    • Network Settings
    • Network Time Protocol (NTP)
    • Timezone
    • Static Routes
    • Simple Network Management Protocol SNMP
  • Services
  • Licenses
  • Configure System Settings
    • System General Settings
    • Cache Settings
    • Session Settings
    • GUI Customization
    • System Backup
    • System Restore
    • Log Upload Settings
    • Postmaster Settings
    • SMTP TLS Settings
    • Update Database
    • Syslog Server
  • Logs
    • Log Files
    • Purge Files
  • Tools
    • Check Connectivity
    • Clear SMTP Queue
  • Session Reports
  • System Usage Statistics
• SMTP Configuration
  • SMTP (Send E-Mail Protocol) Settings
    • General Settings
    • Advanced Settings
    • Outbound Delivery Queue
  • Manage Domains
    • Manage Domain Names
    • Manage Domain Routes
    • Manage Smart Hosts
    • Default Domain Routing
  • KoruMail SMTP AUTH Connector
    • SMTP Authentication Settings
    • Block Users
    • Anomaly Detection
  • LDAP/Local DB/My SQL User Database
    • LDAP Profile
    • Local DB Users
    • My SQL User Database
  • Greylist
    • Greylist Ignored IP Addresses/Domains
  • Manage RBL Servers
  • Disclaimer
  • SMPT Relay
  • DomainKeys Identified Mail (DKIM)
  • Outgoing SMTP Limits
  • Incoming SMTP Limits
• Modules
  • Anti-spam
    • Anti-spam General Settings
    • Authorized Trainers
    • Advanced Anti-spam Settings
    • Bayesian Training
    • Content Filter
    • Signature Whitelist
    • Attachment Filter
  • Anti-Virus
    • Anti-Virus General Settings
    • Advanced Anti-Virus Settings
  • KoruMail Reputation Network (KRN)
  • Anti-Spoofing
  • SMTP IPS/FW
    • SMTP IPS General Settings
    • Whitelist IP Addresses
    • Blocked IP Addresses
    • Rate Control
  • Auto Whitelist
  • Containment System
  • Data Leak Prevention (DLP)
  • Attachment Verdict System
• Profile Management
  • Add And Configure A New Profile
    • Edit A Profile
    • Delete A Profile
• Reports
  • Mail Logs Report
  • SMTP Queue Report
  • Delivery Logs Report
  • SMTP-AUTH Logs Report
  • Summary Reports
  • Domain Reports
  • Attachment Verdict Reports
  • Original Mail Requests
• Quarantine & Archive
  • Quarantine & Archive Settings
    • Quarantine & Archive General Settings
    • Email Reports Settings
    • Admin Email Reports Settings
  • Quarantine Logs
  • Archived Mails
• Appendix - KoruMail Versions
• About Comodo Security Solutions

SMTP IPS/FW

• KourMail's SMTP Intrusion Prevention System (IPS) and Firewall (FW) module provide protection against Denial of Service (DoS) and SYN attacks.

• SYN attacks are dealt with using SYN Cookies and SYN Cache features.

• DoS attacks are blocked by deploying various usage limitations.

• For example, KoruMail can limit the number of connections it accepts in a certain time-period. The IPS/FW module will block IPs that want make more connections more than the limit. You can specify the limit in a security profile.

• The module also lets you create whitelist and block rules to better control spam. The rate control feature, a subset of the DoS protection system, allows you to control how many connections are allowed within the specified time from the same IP address.

To open the 'SMTP IPS/FW' interface

• Click the 'Modules' tab on the left, then click 'SMTP IPS/FW'.

See the following sections for more details.

• SMTP IPS General Settings

• Whitelist IP Addresses

• Blocked IP Addresses

• Rate Control