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IPsec & related Windows option


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#1 BMXRcr

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Posted 29 January 2011 - 03:13 PM

Hi -- I noticed in Vista under Control panel -> Programs -> Add/Remove Services (I think -- where you have all the checkboxes for games, etc), a section on Security with 5 or so options (including IPsec & others).

Question is why would you not want to activate all these security settings? I'm reading about them (IPSec in particular is a little opaque, at least for me, though I know its encryption)? Wouldn't you want to have all of them checked off? There must be some downside, but any explanations or materials appreciated (incidentally these don't show up in Win 7, though we suspect that machine is a little sick). Thanks.

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#2 Didier Stevens

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Posted 29 January 2011 - 04:15 PM

IPSec in particular is a little opaque, at least for me, though I know its encryption

IPsec is a network protocol for IP. It provides your IP communications with authentication, integrity checks and confidentiality, depending on the options you activate.
But every machine you want to communicate with also needs IPsec enabled. It's typically done in a LAN, not on the Internet.

To connect securely to servers on the Internet, you use other encrypted protocols, like TLS (say HTTPS).

Edited by Didier Stevens, 29 January 2011 - 04:15 PM.

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#3 quietman7

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Posted 30 January 2011 - 12:50 AM

Here's some reading material if you want to get into more specifics.

Internet Protocol Security - IPsec
An Inside Look at IPSec in Vista
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