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::Rule(3pm) 			User Contributed Perl Documentation			   Apache2::SiteControl::Rule(3pm)

NAME
Apache2::SiteControl::Rule - Permission manager access rule. DESCRIPTION Each rule is a custom-written class that implements some aspect of your site's access logic. Rules can choose to grant or deny a request. package sample::Test; use strict; use warnings; use Carp; use Apache2::SiteControl::Rule; use base qw(Apache2::SiteControl::Rule); sub grants($$$$) { my $this = shift; my $user = shift; my $action = shift; my $resource = shift; if($action eq "edit" && $resource->isa("sample::Record")) { return 1 if($user{name} eq "root"); } return 0; } sub denies($$$$) { return 0; } 1; The PermissionManager will only give permission if at least one rule grants permission, and no rule denies it. It is important that your rules never grant or deny a request they do not understand, so it is a good idea to use type checking to prevent strangeness. Assertions should not be used if you expect different rules to accept different resource types or user types, since each rule is used on every access request. EXPORT
None by default. SEE ALSO
Apache2::SiteControl::UserFactory, Apache::SiteControl::ManagerFactory, Apache2::SiteControl::PermissionManager, Apache::SiteControl AUTHOR
This module was written by Tony Kay, <tkay@uoregon.edu>. COPYRIGHT AND LICENSE
perl v5.14.2 2006-03-17 Apache2::SiteControl::Rule(3pm)