Recently, the Security Strategy from Cisco has become vague and ill defined.
Cisco and Their Security Strategy
3 July 2010 By 2 Comments
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Loading ...Cisco ASA Failover License Changes in Version 8.3
28 April 2010 By 4 Comments
Quick notes on the Virtual Context licensing requirements when using a Active/Standby (Failover) pair and looking for gotchas and traps.
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(No Ratings Yet) Loading ...How to Create a Strong Yet Memorable Password.
15 April 2010 By Leave a Comment
We’re often told ‘make sure you use a good password’. When we change our passwords at work we’re often forced to add random characters into it to make it more complicated. This can have a detrimental effect on how how easy it is to remember. For a rant on the importance of passwords being memorabl
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(No Ratings Yet) Loading ...F5 LTM and Tcp Timouts
15 April 2010 By 2 Comments
One of the dangers of being from a pure cisco background is assumption. You treat all devices as if they have the same defaults as ‘normal’ Cisco devices. I think I’m pretty good at avoiding this, but it gets us all sometimes. As we all know, when you run long lived TCP connections through application [...]
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(2 votes, average: 5.50 out of 10) Loading ...Blessay:Firewalls Are Like Noses:Everyone’s Got One.
7 March 2010 By 9 Comments
The thing about firewalls is that all networks have them. Once, firewall expertise was rare and a special job focus. Now, firewalls are like noses – everyone’s got one.
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(2 votes, average: 10.00 out of 10) Loading ...Design: Cisco Firewall Services Module Virtualization Design Traps
13 August 2009 By Leave a Comment
The Cisco Firewall Service Modules (FWSM) has a design limitation based on its ability to discriminate packet forwarding between multiple contexts. It also applies to ASA/PIX software. Lets review this in detail and learn the evil consequences.
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(3 votes, average: 8.00 out of 10) Loading ...Blessay: Designing Enterprise DMZ and Multilayer Firewall Clusters
2 August 2009 By 18 Comments
In modern Enterprise networks, you typically have many clusters of firewalls protecting assets in your network. Since we use two or more layers of firewalls, we can put our DMZ for intermediate security zones in different places in our network. Lets gather together the different options and consider the merits or not, and sometimes how they ‘self-build’.
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(2 votes, average: 10.00 out of 10) Loading ...IP Addressing for HA Links for ASA/FWSM/ACE Etc- Poll
6 November 2008 By 7 Comments
What IP addressing do you use for the sync / failover / HA links between your highly available devices ?
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(No Ratings Yet) Loading ...TCP SYN Cookies – DDoS Defence
12 September 2008 By 7 Comments
A TCP SYN Cookie is typically used in DDoS engines and load balancers to create another level of protocol security for Denial of Service attacks. Lets take a quick dive through the technology.
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(No Ratings Yet) Loading ...Lessons in IT Security From the Credit Crunch
24 April 2008 By Leave a Comment
I read an article in the Financial Times Corroded to the core: How a staid Swiss bank let ambitions lead it into folly. It struck me how relevant this is to IT Security.
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(No Ratings Yet) Loading ...Cisco ASA Supports Two OSPF Processes
6 March 2008 By 6 Comments
Sometimes, thinking too much stops you from checking the basics. I have often wished that the Cisco ASA supported more than one routing process like the Juniper Netscreen does (which does this brilliantly). Why didn’t I look for this sooner ?-
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(1 votes, average: 9.00 out of 10) Loading ...Cisco ASA and IOS Command Tip – Test Aaa-Server
18 February 2008 By Leave a Comment
I have been working on a VPN setup that loads the Group Policy from a CiscoSecure ACS server. During the process I discovered the test aaa-server command. Its very handy tool when you are doing this kind of stuff.
Read on…..
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(1 votes, average: 1.00 out of 10) Loading ...
