Field security/Column Security in SharePoint(MOSS/WSS) List

Field security/Column Security in SharePoint(MOSS/WSS) List:

Free from CodePlex:
http://www.codeplex.com/SPListDisplaySetting
http://securefields.codeplex.com/
http://sppex.codeplex.com/

The free ones will work for the most part but if you need more then go for the paid one here:

http://www.kwizcom.com/ProductPage.asp?ProductID=1048&ProductSubNodeID=1049

Improve SharePoint Server (MOSS) Performace

Thanks to Roger Lamb please find references to improve SharePoint’s performance:
Case Study: Using Microsoft® Office SharePoint® Server to implement a large-scale content storage scenario with rapid search availability (TechNet)
White paper: Database Maintenance for Microsoft® SharePoint® Products and Technologies (TechNet)
White paper: Scaling SharePoint 2007 - Storage Architecture (Knowledgelake)
Physical storage recommendations (Office SharePoint Server) (TechNet)
How to defragment Windows SharePoint Services 3.0 databases and SharePoint Server 2007 databases (KB)
White paper: Planning and Monitoring SQL Server Storage for Office SharePoint Server: Performance Recommendations and Best Practices (TechNet)
Configuring Caching, IIS Compression, and Other Performance Options for SharePoint (Video)

Block Certain Web Sites using Your Linksys WRT54G Series Router

Find the screen shots:
The point is to create a policy name and enter the list of PC's that the policy is going to be applied for, in my case I just gave a range of PCS 192.168.1.0 ~ 254.
If you want to be specific give the Mac Address.
In the "Website Blocking by URL Address" specify the website, skip the "http://" from the front of the URL name or the router will not block access to the website.
You can also block it by "Website Blocking by Keyword" the same way.

List Item level Security in sharepoint

Set Item Security based on Content Type that it is created from, and the based on the security groups (naming convention is used to tie them up)
http://mindsharpblogs.com/pauls/archive/2007/05/07/1754.aspx

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http://www.endusersharepoint.com/2008/12/23/security-trimming-a-list-view/

Here’s a question that comes up quite a bit. This time, it was on Stump the Panel:

Does anyone know how I can use one SharePoint List but have different site users only access specific views (kinda like security trimming views) The scenario is I am working with some lawyers who should only access data on the list they are responsible for and shouldn’t see the data the other lawyers are responsible for. I want to only maintain one list so that its easy for me to update just the one list.

Response from Paul Grenier, Moderator of Stump the Panel:

Perfect reason to use folders. Folders can have their own permissions. You can break inheritance and give every object in them the same permissions. This allows you to group things in a list or library by permission. Works great for things like a library of personal expense reports.

"you can set views to not show folders"
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http://www.siolon.com/blog/the-folder-less-sharepoint-paradigm/
Post opposing folders and using views instead. But provides no idea on how to implement item level security.
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http://www.infoq.com/articles/Dressel-Gogolowicz-wss-security
Column Level Security in SharePoint, by defining a custom field type(inheriting from SPFieldLookup) and using that as a lookup column from another list.
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