0
votes
1answer
12 views

how to reduce chances of getting syn flood on mac os x? [closed]

Are mechanisms like syn cookies enabled in Mac OS X by default? Unlike Linux, there is no net.ipv4.tcp_syncookies in sysctl, so how do I turn them on in Mac OS X if it is not on already.
0
votes
2answers
182 views

Protection against scrapping with nginx

This morning we had a crawler going nuts on our server hitting our site almost 100 times per second. We'd like to add a protection for this. I guess I'' have to use HttpLimitReqModule but I don't ...
0
votes
4answers
1k views

apache being flooded?

I have a linux apache server which was running fine until a few days ago. What happened is from the access log there are lines like this, and the log file is growing by many lines every second. ...
2
votes
1answer
1k views

Windows Server 2008: Limit UDP/TCP packets per IP or ban

How I can limit UDP/TCP packets per IP send to my host (or better PORT) per second or minute ? Would be nice to ban that IP for 12/24 hours or even for ever. I got Windows Server 2008 and I'm very ...
2
votes
1answer
449 views

Mitigate HTTP connect floods with HAproxy + Apache

Our infrastructure consists of load balancers running HAProxy and Apache, which forward traffic to our app servers running just Apache. The past few days, we've been seeing connection floods which the ...
1
vote
1answer
435 views

Why is FunWebProducts flooding my server?

I have received 47 000 hits in the past couple of hours from a single domain. I researched FunWebProducts but it seems to be some kind of a plugin, not sure how this is possible? 89.70.25.120 - - ...
0
votes
2answers
652 views

Monitor incoming TCP/UDP flood attack and graph it

I'm preparing a presentation on a security issue and want to include a demonstration. It won't be in real time, I just need to show some pictures of the results. I have some VPSes that will perform ...
0
votes
4answers
711 views

The more secure iptables script imaginable. Does one exist? [closed]

I plan on buying a server soon. I'd like the server to be as secure as possible, only having POP3, SMTP, SSH and HTTP open. I know how to write an iptables script to only allow those connections and ...
2
votes
1answer
1k views

Packet flooding, is there any way to handle it?

My machine is being flooded with thousands of packets per second. They don't eat much bandwidth (60mbps out of 1gbit) but they damage system a lot by consuming a CPU responsible for handling network ...
0
votes
2answers
1k views

VPS under DDoS Attacks [duplicate]

Possible Duplicate: Am I getting DDoSed, and what should I about it? I'm using a 2 VPS Servers. My domains was unvailable for some time. 1 hour, Somtimes 30 Minutes, and pages loading was ...
3
votes
4answers
2k views

Amazon EC2 bandwidth charges in case of unwanted incoming traffic(ddos/flood)?

What happens if my EC2 instance gets ddosed/flooded, which could potentially go up to tens of gigabytes an hour(and even more) of undesired incoming traffic, will i be charged for this traffic? My ...
1
vote
2answers
1k views

UDP Flood/DoS or What?

Basically I am receiving a lot of packets/data with random info on UDP protocol. Packet has header and then a lot of XXXXXXX in it's content. I assume it is UDP flood but it comes from different ...
2
votes
4answers
3k views

How to protect Lighttpd from DOS attacks and flooding? [duplicate]

I have a problem with Lighttpd because someone started to use some Web downloader from very good connection and it blocked my whole website. Is there any way to protect Lighttpd from DDOS attacks and ...