Nginx And DDOS Protection

Category : Linux Helpline (Easy Guide)
Posted on : Apr 20, 2019
Views : 1,274
By : Barton S.

cPnginx and Danginx can use to protect the HTTP DDOS as follows,
Edit the file /etc/sysctl.conf and increase the openfile limits. Add the following line,

fs.file-max = 700000

Edit /etc/security/limits.conf and add the following lines,

nobody soft nofile 100000
nobody hard nofile 500000

Now apply the sysctl configuration using the following command .

# sysctl -p

Now edit the /usr/local/nginx/conf/nginx.conf file and add the following line.

worker_rlimit_nofile 50000;

1) Add the following sysctl parameters,

net.ipv4.tcp_syncookies = 1
# source validation / reversed path
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
kernel.pid_max = 65536
net.ipv4.ip_local_port_range = 9000 65000

2) Use the RateLimit module , http://wiki.nginx.org/HttpLimitZoneModule It must be placed inside http block

limit_zone slimits $binary_remote_addr 10m;
limit_conn slimits 10;

3) You can also use the following too,

limit_req_zone $binary_remote_addr zone=slimitss:10m rate=1r/s;
limit_req zone=slimitss burst=10;

Previous Post
Prestashope Admin And Nginx Plugin

Next Post
Enable Cache in cPnginx Servers

Archive Calendar

Sat	Sun	Mon	Tue	Wed	Thu	Fri
	1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30	31

Over 20000 Satisfied Customers!

Valerie Quinn
CTO, Acteon Group

Centriohost staff were fantastic, I had a concern with a domain and they got back to me very quickly and they helped me to resolve the issue! ~ . . . Read more

Collin Bryan
Photographer, Allister Freeman

I'm using centrio for my portfolio since 2006. The transition was seamless, the support was immediate, and everything works perfectly. ~ . . . Read more

Harry Collett
Actor, A&J Artists

Very easy to understand & use even though I am not very technologically minded. No complications whatsoever & I wouldn't hesitate to recommend it to all. ~ . . . Read more

Porfirio Santos
Technician, Diageo PLC

Centrio support team have been amazingly responsive and helpful to any of my queries, thank you so much to the Centriohost have been amazingly responsive and helpful to any of my queries 👍👍👍 ~ . . . Read more

Catherine Auer
Doctor, SmartClinics

Anytime I've had a problem I can't solve, I've found Centriohost to be diligent and persistent. They simply won't let an issue go until the client is happy. ~ . . . Read more

Effectivo Social
Freelancer, Fiverr

Recommend their shared hosting for all my SME web design clients. Their cloud or VME offerings are too great to deal with. Pricing is perfect and suitable for all users (͠≖ ͜ʖ͠≖) 👌 ~ . . . Read more

CentrioHost Blog