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Trevor Butler

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Dec 13

This year’s AWS re:Invent has come and gone. This year 45,000 people from around the world descended on Las Vegas for one week. Participants were treated to a myriad of breakout sessions, labs, certification exams, and parties (it is Vegas after all). For the first time re:Invent spanned multiple convention centers. The Sands Convention Center was the main center with the Mirage, Aria, and MGM...

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On Monday Mathy Vanhoef and Frank Piessens, from the University of Leuven, published a paper disclosing a series of vulnerabilities that affect the Wi-Fi Protected Access (WPA) and the Wi-Fi Protected Access II (WPA2) protocols. These vulnerabilities described a set of scenarios where a malicious user can perform a man-in-the-middle replay attack on wireless users connected to the network using...

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You have been working as a network administrator for your company for a few years now. In that time you have been asked to complete a handful of network projects; a new office turn up here, replace some switches or a router there. The whole time you work from old templates or, in the case of replacement gear, just copy and paste the old config. Have you ever really stepped back and looked at the...

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Recently I deployed Cisco’s AMP for Endpoints for a 50-user organization. For the uninitiated, AMP for Endpoints is Cisco’s cloud based, enterprise grade, advanced malware protection software that is deployed to each end device in the network. Each endpoint reports back to the central cloud controller and is managed by the controller. Cisco integrated AMP for Endpoints with Cisco’s ThreatGRID to...

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Both A mazon AWS and Microsoft Azure sell the idea of inherent high-availability and scalability within their cloud services. Many companies bought into that idea and dove head-first thinking that, once in the cloud, the provider will provide the redundancy natively. With the recent AWS S3 outage many customers learned the hard way that this is not the case. There is still a need for customers to... Continue reading

By now I am sure most of us have heard of Amazon’s AWS, or Amazon Web Services, but how many of us know of its full potential. The biggest myth around AWS is that it is a cloud service for developers and doesn’t have a place for the enterprise environment however, while AWS offers a lot of platform services aimed at the developer, at its core, it offers a set of rich infrastructure services....

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Currently I am working on a project where I am going through and optimizing a large set of Access Control Lists (ACL) on a set of 5585 Firewalls.  While going through each ACL I have noticed a few mistakes other engineers have made while configuring these rules.  I have compiled a list of these common mistakes.  The focus of this blog will be around ACLs on Cisco ASA’s; however these rules still...

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