DDOS attack please help!


 
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Homework and Emergencies Emergency UNIX and Linux Support DDOS attack please help!
# 8  
Old 01-06-2015
Is it a SYN flood attatack?

I found net.ipv4.tcp_syncookies helped for my servers, and I would use
ip route add blackhole x.x.x.x

and in our case the attacker would get bored.

Not too clever but OK as a quick emergency fix.
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Apache2::SiteControl::GrantAllRule(3pm) 		User Contributed Perl Documentation		   Apache2::SiteControl::GrantAllRule(3pm)

NAME
Apache2::SiteControl::GrantAllRule - A rule that grants permission to do everything. SYNOPSIS
In your instance of a ManagerFactory: use Apache2::SiteControl::GrantAllRule; ... sub getPermissionManager { ... $manager->addRule(new Apache2::SiteControl::GrantAllRule); ... return $manager; } DESCRIPTION
Apache2::SiteControl::GrantAllRule is a pre-built rule that grants access for all permission requests. This rule can be used to help implement a system that has a default policy of allowing access, and to which you add rules that deny access for specific cases. Note that the loose type checking of Perl makes this inherently dangerous, since a typo is likely to fail to deny access. It is recommended that you take the opposite approach with your rules, since a typo will err on the side of denying access. The former is a security hole, the latter is a bug that people will complain about (so you can fix it). SEE ALSO
Apache2::SiteControl::ManagerFactory, Apache::SiteControl::PermissionManager, Apache2::SiteControl::Rule AUTHOR
This module was written by Tony Kay, <tkay@uoregon.edu>. COPYRIGHT AND LICENSE
perl v5.14.2 2006-03-17 Apache2::SiteControl::GrantAllRule(3pm)