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At its core, F5 BIG-IP is primarily an Application Delivery Controller (ADC)—in other words, a sophisticated load balancer that optimizes, secures, and accelerates application traffic. Through its modular architecture, however, BIG-IP can be extended to include full-fledged firewall capabilities via the Advanced Firewall Manager (AFM) and Application Security Manager (ASM) modules. In other words, F5... » read more
1. What Is F5 BIG-IP Edge Client? F5 BIG-IP Edge Client is a dedicated VPN client developed by F5 Networks as a modern replacement for its legacy browser-based SSL VPN portal and the older Lockdown and VPN-Client plugins. Rather than relying on a browser extension, the Edge Client is a standalone application that: Establishes TLS-based... » read more
1. Automation Use Cases & High-Level Architecture Before diving into code, clarify what you want to automate: Use Case Server-Side? Client-Side? Provision new VPN topologies on BIG-IP ✓ Update ACLs, authentication methods, portal pages ✓ Rotate VPN certificates or MFA tokens ✓ ✓ Automatically connect end-users on boot ✓ Scheduled re-authentication (e.g., after sleep) ✓... » read more
1. Upgrade vs. Update: Terminology & Overview F5 distinguishes between an update (minor, patch-level change) and an upgrade (major release, potentially new features or platform requirements). Regardless of which you’re performing, the core steps are the same: Backup your current configuration (UCS, SCF). Download the target image (ISO) from F5’s downloads site. Upload the image... » read more
we’ll explore five primary methods—GUI, UCS archives, TMOS Configuration Files (SCF), direct file copy, and the iControl REST API—so you can choose the approach that best fits your environment. We’ll reference both official F5 guidance and community-driven best practices to give you a comprehensive, professional workflow. 1. GUI-Based Export (Configuration Utility) The BIG-IP Configuration Utility... » read more
F5 BIG-IP platforms come in multiple form factors—hardware appliances (iSeries), blade-based VIPRION chassis, virtual editions (VE), and the newer rSeries—and each exposes its serial number slightly differently. 1. Via the Configuration Utility (GUI) Hardware Appliances & VIPRION Chassis Log in to the BIG-IP Configuration Utility (usually https://<management-IP>/). Navigate to System → Configuration → Device. In... » read more
F5’s Cookie-Management Model F5 WAF organizes cookies into two enforcement categories: AllowThe policy ignores and permits changes to known cookie headers—useful for application-set cookies that don’t pose a security risk. EnforceThe policy prevents any client-side modifications to specific cookies (e.g., session cookies). Any tampering triggers a Modified Domain Cookie violation. Both allowed and enforced cookies... » read more
1. What Is an F5 Virtual Server? An F5 BIG-IP virtual server binds a virtual IP address and service port to a set of resources (usually a pool of real servers), acting as the front door for client connections. It can be L4 (TCP/UDP) or L7 (HTTP, HTTPS), with features like SSL offload, persistence, and... » read more
Password Recovery on BIG-IP 11.x–14.0 Applies to: BIG-IP 11.x, 12.x, 13.x, 14.0Bootloader: GRUB 0.97 or GRUB2 Reboot into Single-User Mode Reboot the system via console. At the GRUB menu: GRUB2 platforms: highlight your kernel entry, press e, append single (or single fastboot to skip fsck), then Ctrl-x to boot. GRUB0.97 platforms: press e twice to... » read more