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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install::TempContent::Objects::mod_perl-2.0.9::docs::apiUseraContriinstall::TempContent::Objects::mod_perl-2.0.9::docs::api::Apache2::FilterRec(3)

NAME
Apache2::FilterRec - Perl API for manipulating the Apache filter record Synopsis use Apache2::Filter (); use Apache2::FilterRec (); my $frec = $filter->frec; print "filter name is:", $frec->name; Description "Apache2::FilterRec" provides an access to the filter record structure. The "Apache2::FilterRec" object is retrieved by calling "frec()": $frec = $filter->frec; API
"Apache2::FilterRec" provides the following functions and/or methods: "name" The registered name for this filter $name = $frec->name(); obj: $frec ( "Apache2::FilterRec object" ) ret: $name (string) since: 2.0.00 mod_perl filters have four names: modperl_request_output modperl_request_input modperl_connection_output modperl_connection_input You can see the names of the non-mod_perl filters as well. By calling "$filter->next->frec->name" you can get the name of the next filter in the chain. Example: Let's print the name of the current and the filter that follows it: use Apache2::Filter (); use Apache2::FilterRec (); for my $frec ($filter->frec, $filter->next->frec) { print "Name: ", $frec->name; } See Also mod_perl 2.0 documentation. Copyright mod_perl 2.0 and its core modules are copyrighted under The Apache Software License, Version 2.0. Authors The mod_perl development team and numerous contributors. perl v5.18.2 install::TempContent::Objects::mod_perl-2.0.9::docs::api::Apache2::FilterRec(3)