Author Topic: problems connect to www.codeblocks.org  (Read 3941 times)

Offline wally

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problems connect to www.codeblocks.org
« on: February 07, 2010, 09:30:38 am »

What might be the reason that i can not connect to
http://www.codeblocks.org  directly ?
I always need a proxy service.



Offline MortenMacFly

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Re: problems connect to www.codeblocks.org
« Reply #1 on: February 07, 2010, 10:36:15 am »
What might be the reason that i can not connect to
http://www.codeblocks.org  directly ?
I always need a proxy service.
depends on where you are actually from. If it's China than most likely Chinese firewalls might block the access to our webpage. If you are behind a firewall ask the admins of that firewall why access is blocked. If your ISP blocks the access ask for support. If you original IP address was misused there might be a ban in or filter rules. The latter is very unlikely but to check I need to know what your IP address / the IP address of your provider is (to the outside world)?
Compiler logging: Settings->Compiler & Debugger->tab "Other"->Compiler logging="Full command line"
C::B Manual: http://www.codeblocks.org/docs/main_codeblocks_en.html
C::B FAQ: http://wiki.codeblocks.org/index.php?title=FAQ

Offline nanyu

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Re: problems connect to www.codeblocks.org
« Reply #2 on: February 07, 2010, 10:39:42 am »
What might be the reason that i can not connect to
http://www.codeblocks.org  directly ?
I always need a proxy service.
depends on where you are actually from. If it's China than most likely Chinese firewalls might block the access to our webpage. If you are behind a firewall ask the admins of that firewall why access is blocked. If your ISP blocks the access ask for support. If you original IP address was misused there might be a ban in or filter rules. The latter is very unlikely but to check I need to know what your IP address / the IP address of your provider is (to the outside world)?

I'm come from China. I access www.codeblocks.org webpage well without proxy.

Offline ixfd64

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Re: problems connect to www.codeblocks.org
« Reply #3 on: February 07, 2010, 08:57:17 pm »
It could be a DNS issue.

Offline wally

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Re: problems connect to www.codeblocks.org
« Reply #4 on: February 08, 2010, 06:32:15 pm »
My provider said a lot of people in our region are not able to connect directly.

Seems that codeblocks block us.

providers IP is :  80.53.171.105

additional info from my provider was:
in poland network is block betwen  hos-tr3.ex3k4.rz4.hetzner.de [213.239.244.147] a codeblocks.org [213.239.205.149]
or  betwen hos-bb1.juniper3.rz4.hetzner.de [213.239.240.234] a  hos-tr3.ex3k4.rz4.hetzner.de [213.239.244.147]

« Last Edit: February 08, 2010, 06:46:40 pm by wally »

Offline MortenMacFly

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Re: problems connect to www.codeblocks.org
« Reply #5 on: February 08, 2010, 07:09:09 pm »
Seems that codeblocks block us.
[...]
80.53.171.105
213.239.244.147
213.239.205.149
213.239.240.234
213.239.244.147
Nope, none of these is blocked (obviously). There must be another reason. I also checked the ban log there are no triggers recently. If you want to you can do a connect at a certain time and tell me that so I can check again. But it's very unlikely it's a ban / block on our site.
Compiler logging: Settings->Compiler & Debugger->tab "Other"->Compiler logging="Full command line"
C::B Manual: http://www.codeblocks.org/docs/main_codeblocks_en.html
C::B FAQ: http://wiki.codeblocks.org/index.php?title=FAQ

Offline thomas

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Re: problems connect to www.codeblocks.org
« Reply #6 on: February 08, 2010, 07:49:58 pm »
It's quite possible that your IP address is blacklisted. This server has been hammered by several hundreds of spambots and exploit scripts simultaneously in the past (most of it coming from China, Ukraine, and Poland), which did not really affect our security, but led to inferior performance and the necessity to block some IP ranges for the sake of keeping the service up in an acceptable quality.

Apart from the IP bans in the forum software that Morten refers to, which cover several /8 subnets (none of which your IP falls in, though), there are several other mechanisms that may be the reason for you being unable to access the site.

We have static rules in iptables that block some very obnoxious IP ranges, as well as a combination of rewrite rules in the web server software which identify a few of the most stupid script kiddie exploits and will temporarily drop packets from an address that runs these.
Also, a daily cron script is updating a blocklist based on a combination of some local heuristics and a blacklist from a major DNS blacklisting service, dropping the top-100 offenders. Subnets which predominantly consist of hostile machines are blocked alltogether.

Most of the blocked subnets are /8 subnets with 120-150 attacking machines, or /16 subnets with more than 5000 attacking machines. Blocking these works very well, the shit-to-signal ratio has gone from nearly 95% down to under 1% that way.

However, certainly no system is perfect, and it may very well be that you can't access this site even though you are a normal, legitimate user who just happens to be in the same IP range as someone else who is scanning for exploits all day. We apologise for that inconvenience.
If you ever happen to get to know someone who is involved with that kind of thing (running exploits, sending spam), feel free to kick him hard where it hurts, and just to be sure, kick him in the face again when he's lying on the floor. This won't let you access this site any better of course, but you'll probably feel better :)
« Last Edit: February 08, 2010, 07:51:47 pm by thomas »
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