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I have a win server 2008 R2 with IIS 7.5. I'm using the FTP service to upload some files. My FTP client had an incorrect password so after a few refreshes the server blocked my IP. Now I don't mind that it blocked my FTP access as I could have been a hacker however it blocked my IP for all ports. I.e. I cannot even RDP to the box now.

Note: This only lasts an hour or so but I still think this is not cool. What happens if I need an emergency deployment and the thing blocks me out.

I've gone through all the IIS settings and cannot find anything relating to this, can anyone point me in the right direction?

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Is there, by any chance, any additional software installed on the machine? I don't think this is default behaviour for any Microsoft component. So I'd be looking at 3rd party IPS/IDS/Firewall/AV software first. –  TristanK May 4 '12 at 5:53
Or even an external firewall/IPS. –  TristanK May 4 '12 at 5:53
The only such software is the Windows Firewall. Can win firewall cause this? This is also a cloud hosting (IBM) so maybe they have a lower level intrusion detection going on? –  gatapia May 4 '12 at 6:06
Like I said, don't believe this is default behaviour of any Microsoft component. I'd ask the hoster about it. –  TristanK May 4 '12 at 7:14
Can you elaborate further on "blocked my ip"? Were your connections explicitly blocked / refused... or did you get an "invalid username / password" type message... wondering if you hit a password lockout policy. –  Chris Anton May 12 '12 at 1:48

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