F5 Sites
  • F5.com
  • F5 Labs
  • MyF5
  • NGINX
  • Partner Central
  • Education Services Portal (ESP)
Contact
  • Under Attack?
  • F5 Support
  • DevCentral Support
  • F5 Sales
  • NGINX Sales
  • F5 Professional Services
Open Side Menu
Skip to contentBrand Logo
Forums
CrowdSRC
Articles
GroupsEventsSuggestionsHow Do I...?
RegisterSign In
  1. DevCentral
  2. Forums
  3. Technical Forum

Forum Discussion

Hardi's avatar
Hardi
Icon for Nimbostratus rankNimbostratus
6 years ago

iRule_TLS

Hi,   much appreciate your guidance to achieve the following through iRule; 1- at the TCP level; iRule read the payload and find the client hello header. 2- then search for extension of 229938,...
big-ip
devops
irules
PeteWhite's avatar
PeteWhite
Icon for Employee rankEmployee
6 years ago

If you take a look at https://tls.ulfheim.net/ you can see exactly how the packet is built and you can build it around that

SSO Login Update Coming to DevCentral

DevCentral News
announcement

Kevin - June 2026 Featured F5er

DevCentral News
announcement
event

Tyler - May 2026 Featured Member

DevCentral News
announcement
event

Recent Discussions

  • ASM attack signatures not syncing between active and standby F5
    11 hours ago
    P_K
  • Query on source IP preservation for syslog traffic through F5 virtual server
    16 hours ago
    yadvendra
  • Hardware BIG-IP appliance reach EOSS, but the software version running on it not yet?
    22 hours ago
    ahle
  • VPN Communication Error with F5 BIG-IP Edge Client
    22 hours ago
    user_904222
  • simultaneous disabling / enabling of all LTM objects
    22 hours ago
    mtfeliciano
Under Attack? F5 Will Help You.
Contacting F5 Support?

DevCentral Quicklinks

* Getting Started on DevCentral
* Community Guidelines
* Community Terms of Use / EULA
* Community Ranking Explained
* Community Resources
* Contact the DevCentral Team
* Update MFA on account.f5.com

Discover DevCentral Connects

* Podcasts
* Social Channels
* Video Streaming

GitHub Awesome-F5

ABOUT DEVCENTRAL

DevCentral NewsTechnical ForumTechnical ArticlesTechnical CrowdSRCCommunity GuidelinesDevCentral EULAGet a Developer Lab LicenseBecome a DevCentral MVP

RESOURCES

Product DocumentationWhite PapersGlossaryCustomer StoriesWebinarsFree Online CoursesTraining & Certification

SUPPORT

Manage SubscriptionsProfessional ServicesCreate a Service RequestSoftware DownloadsSupport Portal

PARTNERS

Find a Reseller PartnerTechnology AlliancesBecome an F5 PartnerLogin to Partner Central

©2026 F5, Inc. All rights reserved.
TrademarksPoliciesPrivacyCalifornia PrivacyDo Not Sell My Personal Information