Main Menu
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
SonicWall
  • Products
    • Network Security
      • Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
      • Security ServicesComprehensive security for your network security solution
      • Network Security ManagerModern Security Management for today’s security landscape
    • Advanced Threat Protection
      • Capture ATPMulti-engine advanced threat detection
      • Capture Security applianceAdvanced Threat Protection for modern threat landscape
    • Access Security
      • Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
      • Secure Mobile AccessRemote, best-in-class, secure access
      • Wireless Access PointsEasy to manage, fast and secure Wi-FI
      • SwitchesHigh-speed network switching for business connectivity
    • Email Security
      • Email SecurityProtect against today’s advanced email threats
    • Cloud Security
      • Cloud App SecurityVisibility and security for Cloud Apps
      • Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
    • Endpoint Security
      • Capture ClientStop advanced threats and rollback the damage caused by malware
      • Content Filtering ClientControl access to unwanted and unsecure web content
    • Product Widgets
      • Product Menu Right Image
      • Capture Cloud Platform
        Capture Cloud Platform

        A security ecosystem to harness the power of the cloud

    • Button Widgets
      • Products A-Z
        all products A–Z FREE TRIALS
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure WiFi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • English English English en
  • BLOG
  • CONTACT SALES
  • FREE TRIALS
  • English English English en
SonicWall
  • Products
    • Network Security
      • Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
      • Security ServicesComprehensive security for your network security solution
      • Network Security ManagerModern Security Management for today’s security landscape
    • Advanced Threat Protection
      • Capture ATPMulti-engine advanced threat detection
      • Capture Security applianceAdvanced Threat Protection for modern threat landscape
    • Access Security
      • Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
      • Secure Mobile AccessRemote, best-in-class, secure access
      • Wireless Access PointsEasy to manage, fast and secure Wi-FI
      • SwitchesHigh-speed network switching for business connectivity
    • Email Security
      • Email SecurityProtect against today’s advanced email threats
    • Cloud Security
      • Cloud App SecurityVisibility and security for Cloud Apps
      • Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
    • Endpoint Security
      • Capture ClientStop advanced threats and rollback the damage caused by malware
      • Content Filtering ClientControl access to unwanted and unsecure web content
    • Product Widgets
      • Product Menu Right Image
      • Capture Cloud Platform
        Capture Cloud Platform

        A security ecosystem to harness the power of the cloud

    • Button Widgets
      • Products A-Z
        all products A–Z FREE TRIALS
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure WiFi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • Menu

Scenario - Low throughput due to IPS

03/26/2020 21 People found this article helpful 97,827 Views

    Download
    Print
    Share
    • LinkedIn
    • Twitter
    • Facebook
    • Email
    • Copy URL The link has been copied to clipboard

    Description

    This is one of a series of scenario based articles describing a real time case and its eventual resolution. In this scenario the customer has a proprietary back-up system where hosts on the WAN perform regular back-ups to a server behind the SonicWall. Customer has a 1 Gbps link to the server. The maximum achievable throughput to the server is 850-950 Mbps but was being drastically reduced to 450 Mbps.

    The following information was gathered during troubleshooting:

    • The back-up traffic was HTTPS.
    • Several different file types were tried - ISO, video, music etc - from the backup target to the data centre without any change in the throughput.
    • Further troubleshooting revealed that the cause of the low throughput was IPS. This was determined by SonicWall's Realtime Monitor and traffic statistics built into the HDS system. It was conjectured that Deep Packet Inspection (DPI) performed by IPS was the root cause of reduced throughput.

    It was not possible to inspect the HTTPS traffic as the customer did not have DPI-SSL license. Therefore, it was necessary to exclude inspection of HTTPS traffic to the server from DPI. However, the purpose of DPI by IPS on HTTPS traffic was to protect against SSL protocol based vulnerabilities. Excluding all HTTPS traffic from DPI was not an acceptable solution as doing so would open the server to SSL vulnerabilities and exploits.

    Resolution

    Since such exploits and vulnerabilities occur during SSL negotiation, it was decided to exclude DPI by IPS from that part of the SSL negotiation which had the least possibility of containing an exploit or vulnerability. The solution was to use the SonicWall Application Firewall Bypass DPI feature to exclude DPI of the Change Cipher Spec message in SSL handshakes. Below is the Change Cipher Spec message from a server:

    Image

    To this effect the following Match Object and App Rule policy were created:

    The hexadecimal digits, 140301000101, is for TLSv1.0. Other values are:

    • SSLv3 = 140300000101
    • TLSv1.1 = 140302000101
    • TLSv1.2 = 140303000101

    Image

    Image

    Deploying this solution the customer was able to see immediate result. The throughput increased to the expected average of 944 Mbps.

    Related Articles

    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSsp series
    • Supported SonicWall and 3rd party SFP and SFP+ modules that can be used with SonicWall NSA series
    • L2TP user to access the network across site to site vpn.

    Categories

    • Firewalls > TZ Series
    • Firewalls > SonicWall SuperMassive E10000 Series
    • Firewalls > SonicWall SuperMassive 9000 Series
    • Firewalls > SonicWall NSA Series

    Not Finding Your Answers?

    ASK THE COMMUNITY

    Was This Article Helpful?

    YESNO

    Article Helpful Form

    Article Not Helpful Form

    Company
    • Careers
    • News
    • Leadership
    • Awards
    • Press Kit
    • Contact Us
    Popular resources
    • Communities
    • Blog
    • SonicWall Capture Labs

    Stay In Touch

    • By submitting this form, you agree to our Terms of Use and acknowledge our Privacy Statement. You can unsubscribe at any time from the Preference Center.
    • This field is for validation purposes and should be left unchanged.
    • Facebook
    • Twitter
    • Linkedin
    • Youtube
    • Instagram

    © 2022 SonicWall. All Rights Reserved.

    • Legal
    • Privacy
    • English
      Scroll to top
      Trace:957d8e7b1ca3887eccd6a78a7ba67e6e-76