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articlesecurityadnnewstechtip July 11, 2013 by John Wagnon
This is the tenth and final article in a series of Tech Tips that highlight SSL Profiles on the BIG-IP LTM.  The first nine articles are: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites SSL Options SSL Renegotiation Server Name Indication Client Authentication Server Authentication The first nine articles in this series highlighted many important SSL features on the BIG-IP.  In this final article, I will overview some of the features...
articlesecurityadnnewstechtip July 03, 2013 by John Wagnon
This is the ninth article in a series of Tech Tips that highlight SSL Profiles on the BIG-IP LTM.  The first eight articles are: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites SSL Options SSL Renegotiation Server Name Indication Client Authentication This article will discuss the concept of Server Authentication, why it's important, and how the BIG-IP system allows you to configure it for your environment.   Server Authentication Du...
articleicalldevnewstechtipbackups June 26, 2013 by Jason Rahm
SyntaxHighlighter.all(); Backing up the BIG-IP Configuration is something I've written about a couple times (here and here) previously. Well, third time's the charm, thanks to the new iCall feature in the 11.4 release. This time, I've even wrapped in scp support to send the backup to a remote server! The great thing about this solution is the only thing required outside of tmsh is setting up the ssh keys. SSH Key Configuration 1. On Big_IP, create your keys   [roo...
articlesecurityadnnewstechtip June 20, 2013 by John Wagnon
This is the eighth article in a series of Tech Tips that highlight SSL Profiles on the BIG-IP LTM.  The first seven articles are: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites SSL Options SSL Renegotiation Server Name Indication This article will discuss the concept of Client Authentication, how it works, and how the BIG-IP system allows you to configure it for your environment.   Client Authentication In a TLS handshake, the ...
articlesecurityadnnewstechtip June 13, 2013 by John Wagnon
This is the seventh article in a series of Tech Tips that highlight SSL Profiles on the BIG-IP LTM.  The first six articles are: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites SSL Options SSL Renegotiation   This article will discuss the concept of Server Name Indication (SNI) and how the BIG-IP system allows you to configure it for your environment.   What is Server Name Indication? SNI (listed in RFC 4366) is an extensio...
articlesecurityadnnewstechtip June 11, 2013 by John Wagnon
This is the sixth article in a series of Tech Tips that highlight SSL Profiles on the BIG-IP LTM.  The first five articles are: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites SSL Options   This article will discuss SSL renegotiation, some OpenSSL features, some of the attack vectors against SSL renegotiation, and then how the BIG-IP is configured to handle this feature.   What Is SSL Renegotiation? Before we get into the details of ...
articlesecurityadnnewstechtip June 04, 2013 by John Wagnon
Several months ago (ok, maybe lots and lots of months ago), Jason Rahm wrote a great series of Tech Tips that cover the BIG-IP LTM SSL profiles.  His first 4 articles in the series were: SSL Overview and Handshake SSL Certificates Certificate Chain Implementation Cipher Suites   I'd like to take the baton and run a little further with the work he started.  This next SSL profile article will dive into the specifics of the SSL Options that are offered in the BIG-IP LTM...
articleadnbig-ipnewstechtip May 31, 2013 by Jason Rahm
SyntaxHighlighter.all();Two-factor authentication (hereafter 2FA) has been a staple in enterprise VPN environments for quite some time, but it is really taking off in the web application space now as well with services riding on smart phones like Google Authenticator and YubiCloud, which we've built solutions for before in George Watkin's Google Authenticator with BIG-IP APM and Brett Smith's Yubikey Authentication with BIG-IP APM.  This solution borrows from Brett's in that it uses the sam...
articledesignbig-ipnewstechtip May 01, 2013 by John Wagnon
The DevCentral team recently developed a solution for a routing traffic to a specific server based on the URI path.  A BIG-IP Local Traffic Manager (LTM) sits between the client and two servers to load balance the traffic for those servers.   The Challenge: When a user conducts a search on a website and is directed to one of the servers, the search information is cached on that server.  If another user searches for that same data but the LTM load balances to the other server, the ...
articlebig-ipdevnewstechtip January 29, 2013 by Jason Rahm
The IP::tos command has been around since the v4 days, and there has been some confusion on IP tos versus DSCP. The command takes the supplied value (or returns  a value) and applies to the tos field overall, which is eight bits. So if you take express forwarding, which is DSCP 46 and use IP::tos 46, you'll notice on the wire that something is amiss: What gives? Well, the DSCP markings are in the first 6 bits of the tos field, so you need to bit-shift to the left a couple places. Tha...
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