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Aug
23
comment What happens when a physical machine fails in a virtual environment?
@Sherif: Basically, yes, and yes. If you want to understand this in more detail, have a look at the Wikipedia article, it briefly addresses VM migration and failover. If you still have questions, ask a more specific question.
Aug
2
comment Meaning of the buffers/cache line in the output of free
@CMCDragonkai: The answer to serverfault.com/questions/23433/… addresses in detail what constitues "cache" and "buffer".
Jul
25
comment Is there any way to restrict user from changing file extensions in Windows XP, Vista, Windows 7?
This looks suspiciously like an XY problem. Can you tell us what problem you are trying to solve?
Jul
15
comment American Users have wrong IP address geolocation
@kasperd: "you can allow" -> "you absolutely should". There are many ways in which geolocation can go wrong, plus the user may want different content (on holiday, preparing a trip...). I hate it when a site gives me stuff based on geolocation with no way to choose.
May
19
comment Getting an intermediate SSL certificate
@TomTom: Good explanation. I took the liberty of editing your comment into your answer.
Dec
3
comment How can I destroy data on a failed hard disk without voiding warranty?
@JoelCoel: No, that's not true. If the drive is properly encrypted, a brute force attack is (phyically) impossible - see e.g. Amount of simple operations that is safely out of reach for all humanity?. Of course, there are a lot of mistakes you can make when encrypting things...
Dec
3
comment Is there a way to provide user-specific passwords for Wi-Fi?
The captive portal is something to consider. However, note that captive portals usually authenticate by the MAC address once you are logged in, so this is just a more sophisticated way of setting up MAC filtering.
Jun
25
comment Should Carrier Ethernet traffic be encrypted?
Also, even if you have "full and sole control" over the hardware, it will be difficult to enforce it. You cannot patrol every meter of a kilometer-long cable.
Feb
18
comment Links inside intranet: use fully qualified name, or just hostname?
@MichaelHampton: Good point. I added it to my answer.
Feb
18
comment Links inside intranet: use fully qualified name, or just hostname?
Also note that accidentally logging in to the wrong site is rather likely in a "foreign" network, because intranets often have some hosts that use "generic" hostnames like www, wiki, mail etc. For these names, it is quite likely that they will exist in the foreign network, too.
Feb
10
comment Why do mobile networks have high latencies? How can they be reduced?
Note to self: Another interesting paper on latency: Latency in HSPA Data Networks, Qualcomm.
Feb
7
comment Why do mobile networks have high latencies? How can they be reduced?
Thanks for the information, very interesting. Since not everyone can read the book (and since answers should stand on their own): Could you explain a bit more how TCP slow start, radio controllers and configuration contribute to latency?
Jan
17
comment People think a “hidden” save file dialog box means the computer is frozen
@NateKerkhofs: LART = Luser Attitude Readjustment Tool. See e.g. catb.org/jargon/html/L/LART.html
Apr
19
comment Secure Exchange mailboxes
Related question (though it asks about Linux): protecting my files from root
Dec
17
comment Why do mobile networks have high latencies? How can they be reduced?
Interesting point. However, this explains only part of the problem. GPRS typically has latencies of 500-1,000ms. Latency across a continent, is typically not more than 200-300ms, so even very wasteful routing should not give you 1,000 ms.
Jul
26
comment Why couldn't MAC addresses be used instead of IPv4|6 for networking?
@Dorus: Your comment does not make sense. PPP nodes can have both IPv4 and IPv6 addresses, precisely becauses IP builds on the underlying protocols, such as Ethernet or PPP. However, PPP nodes do not have a MAC address (because the PPP standard does not have them).
Jul
6
comment Authorization in GIT
possible duplicate of git Permissioning?
Jun
27
comment Subversion behind router
The simplest solution would be to use local version control. You can put an SVN repo on a USB stick (it's just a folder). Or go all the way and use distributed version control, then you can even have multiple repos.
May
25
comment How do other companies handle approved browsers and versions for internal corporate web development hardware?
@KeithS: "One of your boss's primary duties as a software development manager is to remove obstacles that are above your pay grade. " Cool - I'll keep this as a favourite quote :-).
May
10
comment Why do mobile networks have high latencies? How can they be reduced?
After discussion on meta, I tried to make the question more concrete, in the hopes that it may become on-topic.