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Bleichenbacher vs. Forward Secrecy: How much of your TLS is still RSA?

You're thinking about disabling the RSA key exchange on your virtual server in favor of only perfect forward secrecy. But are some of your users still using RSA? Here's how to find out. Read more
Average Rating: 4.9
4 Reviews

Lightboard Lessons: SSL Visibility - The Ultimate Inline Inspection Architecture

Now that the majority of web traffic is encrypted with Forward Secret ciphers, how do you monitor your incoming web traffic for threats? Join guest host David Holmes again this week for another Lightboard Lesson on the ultimate SSL visibility... Read more
2 Reviews

Lightboard Lessons: SSL Visibility - The Ultimate Passive Inspection Architecture

Join DevCentral guest host David Holmes as he details the ultimate passive inspection architecture in this latest episode of Lightboard Lessons! Read more
2 Reviews

Lightboard Lessons: Unexpected Side Effects of Perfect Forward Secrecy

Perfect Forward Secrecy is a great security feature for web applications, but it can have some unexpected side effects. Read more
2 Reviews

Lightboard Lessons: SSL Transactions Per Second

The number of SSL Transactions Per Second (TPS) that your BIG-IP can handle is important to know as you deploy web applications. Read more
Average Rating: 4.9
3 Reviews

Lightboard Lessons: FireEye Ingress Solutions with BIG-IP

Most websites utilize https:// encryption to secure traffic to/from their webservers. This is a blessing and a curse...it's a blessing because the traffic is unreadable in its encrypted form. It's a curse because, well, the traffic is unreadable in its encrypted form... Read more
2 Reviews

TLS Fingerprinting - a method for identifying a TLS client without decrypting

TLS fingerprinting is a methodology based on the attributes in an SSL/TLS handshake ClientHello message, attributes that are ever-so-slightly unique across different client user agents. This methodology, while not perfect, presents an interesting approach to identifying user agents without first decrypting the traffic and looking for an HTTP User-Agent header. Read more
Average Rating: 4.8
8 Reviews

Lightboard Lessons: TLS Server Name Indication

Server Name Indication (SNI) is an extension to the TLS protocol that allows the client to include the requested hostname in the first message of the SSL handshake (Client Hello). Prior to the introduction of SNI, the client could not easily establish secure connections to multiple servers hosted on a single IP address. Read more
Average Rating: 4.9
3 Reviews

Lightboard Lessons: What's in a certificate?

When you visit a "https://" website, you exchange a digital certificate with the web server that hosts that website. But, what exactly is a digital certificate, and what's inside it? Read more
Average Rating: 4.7
3 Reviews

Your SSL Secrets Uncovered

Get Started with SSL Orchestrator SSL and its brethren TLS is becoming more prevalent to secure IP communications on the internet. It’s not just financial, health care or other sensitive sites, even search engines routinely use the encryption... Read more
2 Reviews

SSL Profiles Part 11: TLS Optimization

It’s been a while since we featured the SSL Profile, but some cool new features have emerged and everyone on DevCentral needs to know about them!  In this article, we will look at several options that are now available for optimizing TLS... Read more
1 Review

Lightboard Lessons: Automating SSL on BIG-IP with Let's Encrypt!

In this episode of Lightboard Lessons, I describe the Let's Encrypt automated certificate generation process and how to customize a hook script to automate the challenges and and certificate deployment. What is Let's Encrypt? Let’s... Read more
Average Rating: 4.9
3 Reviews

Lightboard Lessons: SSL Outbound Visibility

You’ve been having trouble sleeping because of the SSL visibility problem with all the fancy security tools that don’t do decryption. Put down that ambien, because this Lightboard Lesson solves it. In episode, David Holmes diagrams the Right Way... Read more
Average Rating: 4.9
5 Reviews

SSL Labs Best Case Grades for Older TMOS Versions

Aspiring for that A rating on Qualys SSL Labs? F5er Brandon Frelich went to work to determine the best case scenarios for older versions of TMOS. Quite an engaging project, hopefully you enjoy reading through it as much as I did. For more info on... Read more
2 Reviews

Advanced Threat Mitigations via SSL Intercept

SSL offload has been around for quite some time. But this technology was primarily developed for the web farm audience, offloading SSL traffic from the application servers and putting the load on application delivery controllers like F5’s BIG-IP.... Read more
1 Review

A Catch from the Codeshare: Let's Encrypt

Let's Encrypt is an ambitious free and open certificate authority, this article highlights a clever solution for maintaining it on BIG-IP... Read more
1 Review

Configuring OCSP Stapling on BIG-IP

When setting up an SSL connection the cert tells you its expiration, but how do you tell if the SSL Cert has been revoked? There are multiple ways to do this. The first is the Certificate Revocation List (CRL). When the client requests the CRL,... Read more
Average Rating: 4.9
6 Reviews

HTTPS的"S"不代表SSL

This is a localised version of the original article here. 當瀏覽器出現一個掛鎖圖像時,我們很自然的會假設該網站正使用SSL以確保我們的通訊安全。它同時也告知消費者該網站是安全的。根據CA Security Council的2015消費者信任調查,只有3%消費者會將他們的信用卡資訊提供給沒有掛鎖圖像的網站。   此種安全印象的影響性並不局限於消費者。F5最新的應用交付現狀調查報告顯示,已經或有計畫建置"SSL... Read more
0 Reviews

Ask the Expert – Why SSL Everywhere?

Kevin Stewart, Security Solution Architect, talks about the paradigm shift in the way we think about IT network services, particularly SSL and encryption. Gone are the days where clear text roams freely on the internal network and organization... Read more
0 Reviews

AWS re:Invent 2015 – SSL Everywhere…Including the Cloud (feat Stanley)

Thomas Stanley, Product Management Engineer, discusses the challenges organizations face when implementing a SSL Everywhere strategy even in the cloud. He gets into areas like SSL certificates, key management, multiple interfaces and the learnin... Read more
1 Review

WhiteBoard Wednesday: SSL Renegotiation

We all know that a client and a server have to negotiate a connection before they can talk securely via HTTPS. But, did you know that, in some cases, that same client and server will need to "renegotiate" their secure connection while they are still talking securely? In this video, John talks about SSL renegotiation and covers a new feature in the BIG-IP that helps protect web servers from potential asymmetric DoS attacks. Read more
Average Rating: 4.9
5 Reviews

Whiteboard Wednesday: SSL Proxy Solutions

In this episode of Whiteboard Wednesday, Jason continues the proxy discussion from last episode with a breakdown of the ProxySSL and SSL Forward Proxy solutions available on the BIG-IP. Resources Proxy SSL Overview Implementing Proxy... Read more
Average Rating: 4.6
9 Reviews

I trust Certificate Authorities, but I have no idea why

I’ve seen statistics that claim between 40% and 60% of all sites on the Internet use encryption to protect their web application traffic.  Regardless of the true number (which changes on a daily basis), it’s fair to say that encryption is a... Read more
Average Rating: 4.9
3 Reviews

Remediating Logjam: an iRule Countermeasure

#SSL #LOGJAM Professor Matthew Green of John Hopkins announced a weakness in the SSL Protocol and has given it the name Logjam (see weakdh.org). Here's a recap of F5's status and the link to an iRule to mitigate Logjam for HTTPS servers behind your load-balancer. Read more
Average Rating: 4.9
4 Reviews

WhiteBoard Wednesday: SSL Ciphers

SSL traffic is on the rise, and it's important to know how the BIG-IP serves up SSL ciphers to your clients or back-end servers. In this edition of Whiteboard Wednesday, John explains the basics of SSL ciphers and offers some interesting tips on how to configure and optimize SSL ciphers on the BIG-IP. Read more
2 Reviews