Posts Tagged ‘ security ’

Junos Basics – OSPF

January 31, 2012
By Aaron Conaway

This isn't hard stuff at all. I'm sure there are a couple of cool tricks I don't know yet, but let's try anyway.

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Stubby Post – Changes to CCNA Voice, CCVP, and CCSP

October 19, 2010
By Aaron Conaway

Cisco changes every certification track I go down. This time they've changed others, too.

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ASA 8.3.1 – Smart Tunnel and NAT Changes

March 11, 2010
By Aaron Conaway

I've got 8.3.1 on my home 5505 and I'm not afraid to use it.

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Convenience versus Security

December 1, 2009
By Aaron Conaway

I coworker sent over a link today that got me thinking about an old adage that I’ve been sharing for years.  The link actually has nothing to do with the philosophy but did trigger a random spewing of words from my brain. Here’s what I tell everyone.  When I deliver these lines, I usually...

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ISCW Notes – Role-based Views

November 4, 2009
By Aaron Conaway

I’m at training for the ISCW test this week, and this topic came up yesterday.  Since it came up last week at the office, I figure it was a sign from $deity that it was time for a blog entry. An admin in another business unit was trying to set up command access for...

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I’ve Been Hacked

October 26, 2009
By Aaron Conaway

It looks like one of those Russian b*%*#rds got me some time last week.  I don’t know how long the site was down for sure, but I would guess that he first got access on Thursday, 22 October.  Since we’re talking about WordPress here, I just restored back to 15 October to be safe,...

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Using SPF Records To Build Objects

October 16, 2009
By Aaron Conaway

My biggest complain about modern firewalls is their lack of the ability to create rules based on URLs or HTTP streams; you have to open access between IP addresses.  Yes, I know there are other means to do that, but I want my ASA/PIX/FWSM to do it without making me do so much work....

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Filtering Out the Noise on the Edge

January 21, 2009
By Aaron Conaway

There’s a lot of noise on the Internet.  I’m not talking about certain news sites, either; I’m talking about stuff like port scans or attempts on weak services from all sorts of bad people on the Internet.  A large chunk of that noise can be filtered by the edge routers, taking some of the...

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A Little Politics for the New Year

December 29, 2008
By Aaron Conaway

Stretch at Packetlife has a lively little write-up on the Australian government’s attempt to implement a nation-wide web filtering service. From Packetlife.net: Setting aside the myriad of technical barriers to implementing such a system, the most obvious question is, “who decides what gets blocked?” When a corporation implements a web filter, it does so...

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Filtering Outbound Traffic

September 24, 2007
By Aaron Conaway

I’ve seen a thousand firewalls in my time, and nearly all of them are poorly configured. The biggest culprit? No outbound filtering. I guess a lot of people think that firewalls are there to protect the network from the Internet, but that’s only part of it. The firewall is to protect every segment from...

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