How do I respond to a buffer/stack overflow [closed] - security

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From a security perspective, how do I respond if I have discovered a stack overflow?

Disable.
Take the service offline. This will help prevent further damage.
Verify.
Make sure that the issue is reproducible.
Find.
Inspect the code to see what the cause is.
Repair.
Effect the changes required to ensure that the issue does not happen again due to the same cause.

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Is it possible to block an entire operating system from accessing a website? [closed]

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I have a client who wants to block Linux users from accessing the website since they account for 1/5 of traffic and are clearly bots.
Has anyone successfully done this? Not too sure where to begin.

How to change system time to default in Linux [closed]

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currently I am using w32tm /resync in windows to reset the time to default timezone but how would i be able to do it in Linux?
After looking at technet, I suspect the closest solutions are ntpd or sntp. For example, you might use the internet cluster of ntp servers.

Does ServiceStack caching support AppFabric? [closed]

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I was wondering if ServiceStack caching api works with AppFabric or if someone has done something similar already.
I don't think you have an implementation out of the box, but you do have an Azure Cache implementation, which has all that you might need to implement one yourself.
If you have already used DataCacheFactory, DataCache, etc. is not a big deal. ICacheClient has just a couple of short methods to implement.

How to show that node.js has less overhead [closed]

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I'm searching for examples that show how to telnet on node.js app port and show how this has less overhead than telnetting on apache http port.
Can anyone help me?
If you're talking about overhead in HTTP headers, I would recommend you use something like Fiddler as this will tell you exactly that is being sent backwards and forwards for any requests.

How do they checks for vulnerabilities on Apple Store application? [closed]

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I know that when you submit an application for Apple Store, it gets tested: if they find a vulnerability the application gets reject.
How do they do this checking? How accurate is it? What vulnerabilities are most likely to get accepted, fooling the test?
Apple isn't the only one, Mozilla also does this for their add-ons. In both cases, its a mix of developers reading though the code aided by static code analysis.

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