Linked Questions

0
votes
3answers
188 views

Ubuntu Server: Attack on blocked ports leads to Ping timeout [duplicate]

I was searching for a solution a long time but cant find anything useful. My webserver is secured by a firewall (iptables with ufw userinterface). Default is deny all and only some ports are open. ...
1
vote
1answer
120 views

DDoS nulling to some ips and other options? [duplicate]

I am looking for some information in regards DDoS in the follow scenario: I have a server that is behind a Cisco Guard and it will be DDoS'ed, I only care about a set list of IPS that by not means ...
2
votes
1answer
152 views

How can I implement an ip whitelist to protect my server? [duplicate]

I'm going to start running a gameserver soon and I want a way to reduce the the damage of a denial of service attack. I want to make it so when someone joins the game their ip adress is added to a ...
0
votes
1answer
151 views

Looking for a good DDOS IPS system [duplicate]

Could I get some recommendations on an IPS solutions that incorporates some form of DDOS protection / what do you currently implement on your network? Thanks
-1
votes
1answer
183 views

Find ddos attack on OpenVZ container [duplicate]

How do you figure out which OpenVZ contain is under attack from a dDoS? I know it is an attack because the b/w and incoming traffic shot WAY up. Can this be done with netstat? Are some attacks not ...
-6
votes
1answer
183 views

What are some acceptable easy solutions against DDOS? [duplicate]

IIRC the best way is to set up a firewall. But what are some easy solutions that doesnt require a lot of knowledge? I use nginx (but i hope the solution can be applied to lighttpd). Would changing ...
0
votes
1answer
83 views

DDoS attacks are killing all my services [duplicate]

I've a few servers running as ssh proxy, someone started to DDOS me, i've installed ddos deflate and apf. The traffic made by ddos downgrade from 10 MB/s to 1 MB/s but it still make my users kick from ...
0
votes
1answer
103 views

DDoS Attack Mitigation Techniques [duplicate]

Our hosting is set up on Amazon EC2 servers, which have been performing great. The problem we run into are spikes in requests for invalid URLs from scripts/bots looking for security holes. When ...
1
vote
2answers
119 views

How can I determine the method of this DDoS attack? [duplicate]

My server went down earlier - looks like a DDoS. A spike in traffic to around 13mbit, the swap goes from idle to maxed in about 5 minutes, and server stops responding. I would like to protect ...
0
votes
1answer
114 views

Simultaneous Requests To Site With JS Cause CPU Spike [duplicate]

someone is making many requests to a specific page on my site that has JS on it. Subsequently, it's driving the CPU load to 100+ if I don't restart apache. What I tried: - Reduce KeepAlive timeout - ...
0
votes
1answer
76 views

DNS workaround for webhost DDoS [duplicate]

My webhoster seems to have some troubles with DDOS attacks and routing overload. This makes my IP to be not available sometimes and I'd like to add a failover IP for the domain. However, 2 A-Records ...
0
votes
3answers
93 views

Small unsustained ddos? [duplicate]

Recently, I have random occurence where I can't reach my server. When this occurs, about 1 ping on each 10 manage to ping back. The ping that do get through are within normal response time (about 42ms ...
0
votes
1answer
70 views

DDOS on Mail server? [duplicate]

My server has been down most of the day, running top shows several Apache processes (httpd) each one using 70% or more of the CPU, and MySql eating almost all memory. I have tried rebooting the ...
0
votes
1answer
58 views

A botnet may be attacking our site right now, how should we respond? [duplicate]

Not sure if SO is the right forum, but we're in need of help and perhaps programmatic elements may comprise the final solution. Instead of downvoting, please recommend where to post this question, and ...
1
vote
1answer
47 views

Under attack what source url source would this be? [duplicate]

We are under attack since about 2 weeks now and did as much as we can to protect oursefs. mod_reqtimeout is doing the job now but I am confused as what is it that they are hiting I found this post ...

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