Am I being blocked from a website??

MSI 865PE-Neo2-PFS Platin
February 22, 2007 at 05:21:43
Specs: XP Pro, Intel P4 3.04Ghz/2048 Cor

How do I go about checking to see if I am being blocked by a corporate website from visiting their site? Is there some way for me to determine if my IP address is on their block list?

Thanks...


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#1
February 22, 2007 at 10:58:24

What's the website, and are you connecting from home, an educational institution or other?

Life's more painless for the brainless.


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#2
February 22, 2007 at 11:10:19

If you are asking about a certain website blocking your IP, yes they can. THIS is just one example of how it works.

i_XpUser


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#3
February 23, 2007 at 04:52:14

Thanks for the quick input. What I am really looking for is a way to test this theory...that I am being blocked. Is there some nifty little program that I could use or a technique to see if this is the case?

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#4
February 23, 2007 at 15:04:15

Yes, there are ways to *mostly* tell. No, they're not easy.

For L3 filtering you could try an ICMP ping & see if you're blocked by IP addy...ICMP's could be filtered tho...could also try from a proxy to see if you're being blocked by source ip

TCP connectivity could be checked by looking at responses to your SYN -- if SYN gets no RST then it's probably filtered & being dropped instead of replying with an RST...could also mean the host is just down...

If you're blocked at HTTP level, then socket might open & then immediately close or could serve an HTTP 403.

Bottom line is, I can't really tell you how to check this without going into pages and pages of details. You should download Wireshark, it's a good packet capture/analysis program. Study the protocols & try to make sense of what's actually happening.


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