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| uCoz Community » General Information » First Steps with uCoz » Can't connect to a uCoz website (server is not available, site is down, site inaccessible) |
| Can't connect to a uCoz website |
 Please check uCoz Server Status' in the following thread before posting: http://forum.ucoz.com/forum/3-14706-1 When posting messages here, make sure that the website is inaccessible for everyone and not just for you.
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Amir1589, Weifeng, Admin1246, your websites are inaccessible due to a DDoS attack. Please read the first post of this thread and be patient. We are doing all possible.
Quote (Elexy) I'm saying things how it is and how it went because I don't know anything about hosting, servers and all that stuff. And let's stop here. What you are doing is trying to confuse other users with false guesses. I understand your confusion, I understand you want your website(s) back online, but do you honestly think our team doesn't want this as well? Do you think its to our advantage and our specialists are just sitting and waiting for the DDoS attack to stop? About three weeks you are talking - it has nothing to do with a DDoS attack. As far as I understand from your description it was a server blocked by a network provider and the solution to it was the change of the server IP. Quote More than 160 Gbit ? Tell me someone or something that has that capacity and i will consider your initial "fantasies" and "exaggerated company propaganda" as possibly true. Just google "world's largest DDoS attack". DDoS attacks happen regularly, more often than you can imagine. But our users don't notice the majority of them, due to the protection measures of our system administrators and the protection software. This current DDoS attack is unprecedented. And as stated in the first post, the servers and the websites are online, they are inaccessible from some areas only. You are all free to express your opinions. But let's all be patient and let the technical specialists to do their job. Just remember that uCoz is interested in this situation to be fixed asap as much as you do. I'm not active on the forum anymore. Please contact other forum staff.
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Hello,
I like to know, when problem will be solved. My site doesnt open. It stops my business, my eshop isnt work, my customers cant access too. Attachments:
4353894.jpg
(45.6 Kb)
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How to protect your network
So as you can see, a DDoS can take multiple forms, and when building a defense against them, it’s important to consider these variants. The easiest, although a costly way to defend yourself, is to buy more bandwidth. A denial of service is a game of capacity. If you have 10,000 systems sending 1 Mbps your way that means you’re getting 10 Gb of data hitting your server every second. That’s a lot of traffic. In this case, the same rules apply as for normal redundancy. You want more servers, spread around various datacenters, and you want to use good load balancing. Having that traffic spread out to multiple servers will help the load, and hopefully your pipes will be large enough to handle all that traffic. But modern DDoS attacks are getting insanely large, and quite often can be much bigger than what your finances will allow in terms of bandwidth. Plus, sometimes it’s not your website that will be targeted, a fact that many administrators tend to forget. One of the most critical pieces of your network is your DNS server. It’s a bad idea to leave it as an open resolver, and it should be locked down in order to save you from being used as part of an attack. But in a similar way, what if those servers came under attack? Even if your website is up, if no one can connect to your DNS servers and resolve your domain name, that’s just as bad. Most domain registrations are done with two DNS servers, but quite often that may not be enough. Make sure your DNS is protected behind the same type of load balancing that your web and other resources are. There are also companies out there that provide redundant DNS that you can use. For example, many people use content delivery networks to serve files to customers in a distributed way, which is a great way to also protect them against DDoS attacks, but many of those companies also offer enhanced DNS protection as well, which is something you may want to look at. If you’re serving your own data, and managing your network, then there are many things you may want to do to protect it at the network layer. Make sure all your routers drop junk packets, block things like ICMP if you don’t need it to go through, and set up good firewalls. For example, it’s quite obvious that your website is never going to be asking random DNS servers for queries, so there’s no reason to allow UDP port 53 packets heading for your servers. Block everything you can at your network border, where you have the largest pipe, or better yet, get your upstream provider to block them for you. Many Internet providers offer this type of service to businesses, where you can be in touch with their network operating centers and make sure they block any unwanted traffic, and also help you out in the event that you’re getting attacked. In a similar way, there are many ways to protect your network from Syn attacks, by increasing your TCP backlog, reducing the Syn-Received timer, or using Syn caches. Finally, you should also think about ways to mitigate any attack that does reach your site. For example, most modern websites use a lot of dynamic resources. While the actual bandwidth from an attack may be manageable, often what ends up failing is the database, or the custom scripts you may be running. Think about using caching servers to provide as much static content as possible. Have a plan in place to quickly replace dynamic resources with static ones, in the event that you’re getting attacked. And make sure to have detection systems in place. The worst thing for any business is for the network or site to go down, so you want to be alerted as soon as an attack starts, and be ready to deal with it. Because of the way it’s done, halting a DDoS attack at the source is incredibly difficult. But setting up an infrastructure that is distributed, hardened, and secure is possible, and that’s something you should think about when setting up your network. |
kriskute, your site is down due to the DDoS attack. Unfortunately we have no ETA as to when these issues will be resolved. Our datacenter technicians are working to resolve these issues ASAP.
Jack of all trades in development, design, strategy.
Working as a Support Engineer. Been here for 13 years and counting. |
Quote (artak) Unfortunately we have no ETA as to when these issues will be resolved. Our datacenter technicians are working to resolve these issues ASAP. artak, the nature of this DDoS attack unfortunately can leave sites down for extended periods of time. As I've said above our technicians are working to resolve these issues for everyone ASAP. 
Jack of all trades in development, design, strategy.
Working as a Support Engineer. Been here for 13 years and counting. |
bangkero, our technicians are working hard on fixing the server issue. Unfortunately, this has been one of the (if not the) most serious DDoS attack uCoz has experienced in its 8 years of activity. The strength of the attack was measured at over 160 Gbps and, by comparison, the most powerful DDoS attack that has been directed on the Internet, to date, had around 300 Gbps. Thank you for understanding!
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Hi all!
All my ucoz sites is down! 3 days now! The servers is not up yet?? I have a serius problem with one of them http://www.esperos-paranormal.com/ The other 2 is http://esperos-library.ucoz.com/ and http://angelsriders.com/ thank you Post edited by aposperittis - Tuesday, 2013-07-09, 9:43 AM
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Very streight....my website www.myfce.tk (on UCOZ www.fce.ucoz.com) keeps not loading. There are traceroute result:
Microsoft Windows 8 [Version 6.2.9200] © 2012 Microsoft Corporation. All rights reserved. C:\Users\Jon>tracert myfce.tk Tracing route to myfce.tk [195.216.243.241] over a maximum of 30 hops: 1 1 ms 1 ms 1 ms 192.168.1.1 2 36 ms 18 ms 17 ms adsl92-86-135-129.romtelecom.net [92.86.135.129] 3 61 ms 62 ms 62 ms 10.0.226.9 4 62 ms 61 ms 62 ms 10.0.226.177 5 63 ms 62 ms 63 ms 10.0.240.213 6 62 ms 62 ms 62 ms 10.0.200.2 7 62 ms 63 ms 65 ms cat01.Frankfurt.gldn.net [80.81.192.243] 8 94 ms 94 ms 95 ms pe06.Moscow.gldn.net [79.104.235.82] 9 103 ms 104 ms 103 ms 82.142.171.182 10 102 ms 102 ms 102 ms 185.17.28.2 11 105 ms 105 ms 105 ms s91.unet.com [195.216.243.241] Trace complete. C:\Users\Jon> I like to help out! :)
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aposperittis, Georgik, your websites are unavailable due to the widespread outages caused by the DDoS attack on the datacenter. Our technicians are doing everything possible to restore access to servers from all regions ASAP.
Jack of all trades in development, design, strategy.
Working as a Support Engineer. Been here for 13 years and counting. |
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