From ba44ff312b45502647c7ab367bcdff0a6609ac92 Mon Sep 17 00:00:00 2001 From: Dean Lee Date: Tue, 9 Sep 2014 14:55:34 +0800 Subject: [PATCH] grep IP at the start of lines I'm not sure if this regex works best, so I'm patching this single file as a sample. Don't forget to update `mail-whois-lines.conf` after this patch got merged. For the following logs, `grep '[^0-9]199.48.161.87[^0-9]'` will output nothing, while `grep '\([^0-9]\|^\)199.48.161.87[^0-9]'` works: 
199.48.161.87 - - [09/Sep/2014:13:38:54 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:38:56 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:38:58 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:00 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:05 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:05 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:13 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:21 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:32 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
--- config/action.d/sendmail-whois-lines.conf | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/config/action.d/sendmail-whois-lines.conf b/config/action.d/sendmail-whois-lines.conf index 270373e7..985d0048 100644 --- a/config/action.d/sendmail-whois-lines.conf +++ b/config/action.d/sendmail-whois-lines.conf @@ -26,7 +26,7 @@ actionban = printf %%b "Subject: [Fail2Ban] : banned from `uname -n` Here is more information about :\n `/usr/bin/whois || echo missing whois program`\n\n Lines containing IP: in \n - `grep '[^0-9][^0-9]' `\n\n + `grep '\([^0-9]\|^\)[^0-9]' `\n\n Regards,\n Fail2Ban" | /usr/sbin/sendmail -f