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Tear Down This Wall! (Or at least punch a hole in it)

Back in 1987, President Reagan stood at Brandenburg Gate in Berlin and issued these iconic words: "Mr. Gorbachev, tear down this wall!" Sure, there was a path from east to west during the cold war at Checkpoint Charlie, but the existence... Read more
0 Reviews

Managing BIG-IP Routes with the Python Bigsuds Library

Perusing the Q&A section of DevCentral a couple days ago, I noticed a question on adding routes from community member Richard: Is there a smart way to add a bunch of routes that doesn't mandate manual entry... (The JRahm paraphrase) ... Read more
1 Review

F5 Friday: Creating a DNS Blackhole. On Purpose

#infosec #DNS #v11 DNS is like your mom, remember? Sometimes she knows better.   Generally speaking, blackhole routing is a problem, not a solution. A route to nowhere is not exactly a good thing, after all. But in some cases it’s an... Read more
0 Reviews

WILS: Content (Application) Switching is like VLANs for HTTP

We focus a lot on encouraging developers to get more “ops” oriented, but seem to have forgotten networking pros also need to get more “apps” oriented. Most networking professionals know their relevant protocols, the ones they work with day in... Read more
0 Reviews

F5 Friday: ‘IPv4 and IPv6 Can Coexist’ or ‘How to eat your cake and have it too’

Migration is not going to happen overnight and it’s going to require simultaneous support for both IPv4 and IPv6 until both sides of the equation are ready. Making the switch from IPv4 to IPv6 is not a task anyone with any significant... Read more
0 Reviews

Dire (Load Balancing) Straits: I Want My Client IP

load balancing fu for developers to avoid losing what is vital business data I want my client IP Now read the manuals that's the way you do it Give the IP to the SLB That ain't workin' that’s the way to do it Set... Read more
0 Reviews

The Question Shouldn’t Be Where are the Network Virtual Appliances but Where is the Architecture?

We seem on the verge of repeating the mistakes associated with failed SOA implementations: ignoring the larger issue of architecture. Everyone – from pundit to public – is asking the same question: “Where are the network virtual appliances?” But... Read more
0 Reviews

The Application Delivery Spell Book: Contingency

The long, lost application delivery spell compendium has been found! Its once hidden, arcane knowledge is slowly being translated for the good of all web applications. Luckily, you don’t have to be Elminster or Gandalf or to cast this spell over... Read more
0 Reviews

WILS: Client IP or Not Client IP, SNAT is the Question

Ever wonder why requests coming through proxy-based solutions, particularly load balancers, end up with an IP address other than the real client? It’s not just a network administrator having fun at your expense. SNAT is the question – and the... Read more
0 Reviews

Business-Layer Load Balancing

One of the interesting points that discussions around intercloud brings up is the need for infrastructure to, if you’ll pardon the use of marketing jargon, align with the business. What that really means is that applications and their supporting... Read more
0 Reviews

Infrastructure Matters: Challenges of Cloud-based Testing

An interesting thing happened on the way to testing that application from the cloud. We broke the innertubes! Pros and Cons of Application Testing in the Cloud A firm wanted to test their application and need 100 browser instances. In the old days... Read more
0 Reviews

Picard and Dathon at El-Adrel

The importance of context in solving the problems created by tying web applications to deeply rooted local metaphors (IP addresses). The relationship between IP addresses and web applications to most end-users is much like the metaphorical... Read more
0 Reviews

Windows Vista Performance Issue Illustrates Importance of Context

Decisions about routing at every layer require context A friend forwarded a blog post to me last week mainly because it contained a reference to F5, but upon reading it (a couple of times) I realized that this particular post contained some very... Read more
0 Reviews

Virtualization: Just how far are we willing to take it?

If your entire data center infrastructure is on one virtualized PC, you're doing it wrong. Where's F5 The comparison between the power of a modern PC and a 1960's mainframe is o... Read more
0 Reviews