{"id":1173,"date":"2013-09-10T18:25:06","date_gmt":"2013-09-10T18:25:06","guid":{"rendered":"http:\/\/www.milesweb.com\/hosting-faqs\/?p=1173"},"modified":"2018-05-12T10:10:04","modified_gmt":"2018-05-12T10:10:04","slug":"unable-to-start-lfd","status":"publish","type":"post","link":"https:\/\/www.milesweb.in\/hosting-faqs\/unable-to-start-lfd\/","title":{"rendered":"Unable to start lfd"},"content":{"rendered":"

Login Failure Daemon (lfd)<\/strong><\/p>\n

Login Failure Daemon (lfd) is a process that runs all the time and periodically (every X seconds) scans the latest log file entries for login attempts against your server that continually fail within a short period of time. Such attempts are often called “Brute-force attacks” and the daemon process responds very quickly to such patterns and blocks offending IP’s quickly. Other similar products run every x minutes via cron and as such often miss break-in attempts until after they’ve finished, our daemon eliminates such long waits and makes it much more effective at performing its task.<\/p>\n

Login tracking is an extension of lfd, it keeps track of POP3 and IMAP logins and limits them to X connections per hour per account per IP address.<\/p>\n

When lfd started the status shows as below.<\/p>\n

Status of lfd:lfd is stopped<\/strong><\/p>\n

When monitoring log file \/var\/log\/lfd.log you see that it reports an error.<\/p>\n

lfd[964936]: *Error* unable to create lfd PID file [\/var\/run\/lfd.pid] No such file or directory, at line 155<\/strong><\/p>\n

You see that the pid file exists but with incorrect permissions.<\/p>\n

? 1 ? ? 5 Aug 30 05:41 lfd.pid<\/strong><\/p>\n

The permissions, ownership on file shows a question mark (?) is because the file system is corrupt and requires a FSCK (File System ChecK). You will have to reboot the server with command below which will perform a FSCK when it boots.<\/p>\n

shutdown -rF now<\/strong><\/p>\n

r represents “reboot after shutdown” & F represents perform a FSCK when it boots. Once the server boots after performing FSCK, lfd starts & shows status running. The permissions & ownership shows correct as well.<\/p>\n","protected":false},"excerpt":{"rendered":"

Login Failure Daemon (lfd) Login Failure Daemon (lfd) is a process that runs all the time and periodically (every X seconds) scans the latest log file entries for login attempts against your server that continually fail within a short period of time. Such attempts are often called “Brute-force attacks” and the daemon process responds very […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,22],"tags":[],"class_list":["post-1173","post","type-post","status-publish","format-standard","placeholder-for-hentry","category-dedicated-server-faq","category-vps-faq"],"yoast_head":"\nUnable to start lfd<\/title>\n<meta name=\"description\" content=\"Login tracking is an extension of lfd, it keeps track of POP3 and IMAP logins and limits them to X connections per hour per account per IP address.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.milesweb.in\/hosting-faqs\/unable-to-start-lfd\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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