User talk:Jasonlfunk

License tagging for Image:DMZ network diagram 1 firewall.png[edit]

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DMZ Article[edit]

Will do -- probably late this afternoon. Howard C. Berkowitz 15:54, 11 October 2007 (UTC)[reply]

I'd also appreciate any comments on SIGINT, MASINT, and (typo in the page name) National Means of Technical Verification. They were stubs, and I thought I'd add just a little -- and it was like trying to eat one potato chip. The first two are now huge and need to be split up. Howard C. Berkowitz 16:07, 11 October 2007 (UTC)[reply]

Been reading and thinking about DMZ, and to some extent backtracking to the definitions in the firewall article. Let me make some comments, but I'm not sure I'm clear as yet on how to edit them in. I don't think there are a sufficient number of firewall architectures presented, to say nothing of the role of screening routers as distinct from stateful firewalls.

"Perimeter network" is not as widely used a term as DMZ, but I find it useful. There are several ways you could draw this, but think of a four-port firewall. One port goes to the outside router, on a LAN that only has routers, the outside DNS, and perhaps some honeypots, sinkholes, IDS, etc. Another port goes to the servers (e.g., public web) to which you want generic outside access. That port is, I think, closest to the way you are using DMZ. A third port goes to the servers that have to have access to the outside, but are primarily for inside use and could have some use if things died to the outside (e.g., mail, news, outgoing web cache if you use it). The fourth port goes to the inside network, perhaps through a rate-limiting final router.

Not infrequently, I've done inside-outside security architectures where a firewall isn't the only way to traverse into the protected side. I may, for example, have an outside-facing VPN concentrator, with a crypto accelerator, terminating SSL sessions and then having a path to the inside; this is parallel to the traditional firewall. Also, if I have any host-to-host IPSec, I may have a rate-limiting, address-checking router that lets the encrypted traffic go through in a controlled way; there's nothing in it I can examine at the boundary.

As far as references, do you have the Cheswick and Bellovin book, Firewalls and Internet Security, and Building Internet Firewalls by Zwicky, Cooper and Chapman?

Do you consider specialized security boxes like the Barracuda mail screener within scope?Howard C. Berkowitz 03:43, 12 October 2007 (UTC)[reply]

It's always hard to decide how much to put in an article. For some related articles that might give an idea, and also where they tied to other ones, are Forwarding Plane and Control plane, which I broke out from Router. Routing and Routing protocols, as well as Router, were there before I started working with them, and there's not total agreement of what belongs in each and how technical they should get.

Now, for "horrible examples", I'm essentially braindumping to SIGINT and MASINT. The misnamed National means of technical verification (it should be National Means of Technical Verification) is probably about at the right level. While they are outside this field, the Vessel monitoring system is close to needing to hiving off content, probably the regional and country-by-country implementations. Howard C. Berkowitz 15:43, 12 October 2007 (UTC)[reply]

DMZ images[edit]

Hi, I'm not qualified to say anything about the content of the Demilitarized zone (computing) article (it makes sense to me as much as I read it), but I am considering converting the images into vector format. What I'd like to know is, why did you find it necessary to remove the two labels "Three-legged firewall" and "DMZ Subnet" from Image:DMZ network diagram.png in your copy Image:DMZ network diagram 1 firewall.png? -- intgr [talk] 15:51, 13 October 2007 (UTC)[reply]

I didn't change any images; I don't even have a PNG editor. Nevertheless, after a couple of decades of working with firewalls, including in standards and architecture, this was the first time I'd heard "three-legged firewall" used. "screened host" and "screened subnet" are used, and not infrequently "perimeter network" between the inside of the firewall and a final screeing router. While real-world implementations tend to move almost everything off except DNS and security monitors off the subnet between the outside of the router and the outside of the firewall, there aren't universally accepted terms for the subnet that contains servers primarily concerned with outside users (e.g., web or e-commerce), and for the subnet containing servers accessible to the outside but most intended for inside users, such as mail and news.

Another exception for the DMZ usage that only contains the inside interface of the external screening router, external DNS, and possibly security monitors (honeypots, network intrusion detection systems, etc.) are relaying devices for traffic that is inherently incompatible with firewall proxies. One such is a SSL/SSH VPN concentrator, and the other is a screening router for traffic that is encrypted end-to-end between hosts, or possibly local security gateways. Howard C. Berkowitz 16:02, 13 October 2007 (UTC)[reply]

Speedy deletion of Katie Bishop[edit]

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Image source problem with Image:Katie Bishop Food.jpg[edit]

Image Copyright problem

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Merger discussion for DMZ_(computing)[edit]

An article that you have been involved in editing—DMZ_(computing)—has been proposed for merging with another article. If you are interested, please participate in the merger discussion. Thank you. Stephen Charles Thompson (talk) 19:34, 17 October 2018 (UTC)[reply]