SA-MP Forums Archive
[Off]Help - Printable Version

+- SA-MP Forums Archive (https://sampforum.blast.hk)
+-- Forum: SA-MP Scripting and Plugins (https://sampforum.blast.hk/forumdisplay.php?fid=8)
+--- Forum: Scripting Help (https://sampforum.blast.hk/forumdisplay.php?fid=12)
+--- Thread: [Off]Help (/showthread.php?tid=618279)


[Off]Help - BrianFaria - 03.10.2016

Well, it turns out that buying a linux vps 12gb of ram for hostear multiple servers, the problem that I put
"Iptables -A INPUT -p udp! --dport 7777 -j DROP" and all servers were turned off, how to fix it? How protego the vps DDoS attacks? I'm new to this, thanks!

Re: [Off]Help - MCZOFT - 03.10.2016

your missing something up here ..

PHP код:

        Syntax to block an IP address under Linux . however , you'll feel that the server went DOWN . but he's just blocked .
iptables -A INPUT -s xxx.xxx.xxx.xxx -j DROP 
as default in LINUX you need to limit using IPTABLES (linux firewall). the ammount of connections from the same IP in a short time but this will prevent the simpler DDOS attacks.
in your line , the interface name is missing . in order to adjust it and getting it ready to filter the traffic coming in . so to do so . look at the example

PHP код:
iptables -I INPUT -p udp --dport 7777 -i eth0  -m state --state NEW -m recent --set
iptables -I INPUT -p udp --dport 7777 -i eth0  -m state --state NEW -m recent --update --seconds 60 --hitcount 10 -j DROP 
Good luck

Re: [Off]Help - MCZOFT - 03.10.2016

One more thing /


If you just want to block access to one port from an ip xxx.xxx.xxx.xxx to port xxxx then type command:

PHP код:
iptables -A INPUT -s xxx.xxx.xxx.xxx -p udp --destination-port xxxx-j DROP 
The above rule will drop all packets coming from IP xxx.xxx.xxx.xxx to port mail server port xxxx.

But the DROP will not be inmediate and may need a server restart if there are already connections from the offending IP.

This scenario is common with script kiddies trying to DDOS your server.