I have written a perl program that protects a Linux MTA running postfix.<\/p>\n\n\n\n
The program snifs on \/var\/log\/mail. If a host is doing something wrong\/illegal he will be blocked for 24 hours.<\/p>\n\n\n\n
Three illegal attemps in 20 minutes triggers a drop action in firewalld.
Sorry for the comments in the script being in danish.<\/p>\n\n\n\n
Installation:<\/p>\n\n\n\n
# ### MAIN LOOP ###<\/p>\n
# Forbind til database Update 2016\/01\/14:<\/strong><\/p>\n\n\n\n Minor fixes and new function applied that restores the firewall after firewall flush or system reboot.<\/p>\n\n\n\n Update 2024\/01\/05:<\/strong><\/p>\n\n\n\n Script changed to use firewallcmd. I have written a perl program that protects a Linux MTA running postfix. The program snifs on \/var\/log\/mail. If a host is doing something wrong\/illegal he will be blocked for 24 hours. Three illegal attemps in 20 minutes triggers a drop action in firewalld.Sorry for the comments in the script being in danish. Installation: Update… L\u00e6s mere Autofirewall for Linux MTA running postfix<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12237,1,28,6],"tags":[],"class_list":["post-1051","post","type-post","status-publish","format-standard","hentry","category-hobby","category-ikke-kategoriseret","category-linux","category-teknik","entry"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/posts\/1051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/comments?post=1051"}],"version-history":[{"count":3,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/posts\/1051\/revisions"}],"predecessor-version":[{"id":2543,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/posts\/1051\/revisions\/2543"}],"wp:attachment":[{"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/media?parent=1051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/categories?post=1051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tomas.dk\/ps\/wp-json\/wp\/v2\/tags?post=1051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
$dbh = DBI->connect(“dbi:mysql:$firewalldb”, “USER<\/span>“, “PASSWD<\/span>“)
or die “Kunne ikke forbinde til databasen: $firewalldb\\n”;<\/p>\n<\/li>\n\n\n\n
my $wanaddr = “aaa.bbb.ccc.ddd”; #\/32
my @whitelist = (“aaa.bbb.ccc”, “aaa.bbb.ddd”); # \/24<\/li>\n\n\n\n
Database structure is now on mariadb.<\/p>\n","protected":false},"excerpt":{"rendered":"