commit f6d427043a5b7f4dce9ee7c084223e3942516be5
Author: Jany <jany.garrido@countigo.cu>
Date:   Wed Apr 15 18:59:51 2026 -0400

    Configuration files for fail2ban

diff --git a/filter.d/nginx-bad-request.conf b/filter.d/nginx-bad-request.conf
new file mode 100644
index 0000000..12c14ab
--- /dev/null
+++ b/filter.d/nginx-bad-request.conf
@@ -0,0 +1,16 @@
+# Fail2Ban filter to match bad requests to nginx
+#
+
+[Definition]
+
+# The request often doesn't contain a method, only some encoded garbage
+# This will also match requests that are entirely empty
+failregex = ^<HOST> - \S+ \[\] "[^"]*" 400
+
+datepattern = {^LN-BEG}%%ExY(?P<_sep>[-/.])%%m(?P=_sep)%%d[T ]%%H:%%M:%%S(?:[.,]%%f)?(?:\s*%%z)?
+              ^[^\[]*\[({DATE})
+              {^LN-BEG}
+
+journalmatch = _SYSTEMD_UNIT=nginx.service + _COMM=nginx
+
+# Author: Jan Przybylak
diff --git a/filter.d/nginx-scan-params.conf b/filter.d/nginx-scan-params.conf
new file mode 100644
index 0000000..5b2231d
--- /dev/null
+++ b/filter.d/nginx-scan-params.conf
@@ -0,0 +1,7 @@
+[Definition]
+# IMPORTANTE: con nginx datepattern, el timestamp se representa como [] en los regex
+# Ejemplo interno esperado:
+# 200.55.173.164 - - [] "POST /aup/login.html?... HTTP/1.1" 200 20364 "-" "Mozilla/5.0"
+
+failregex = ^<HOST>\s+-\s+\S+\s+\[\]\s+"(?:GET|POST|HEAD|OPTIONS|PUT|DELETE|PATCH)\s+[^"]*\?[^"]*(?:allow_url_include|auto_prepend_file|php://input|EXEC|owasp\.org|/etc/passwd)[^"]*"\s+\d{3}\s+\d+\s+"[^"]*"\s+"[^"]*"
+ignoreregex =
diff --git a/jail.d/custom.conf b/jail.d/custom.conf
new file mode 100644
index 0000000..17569b0
--- /dev/null
+++ b/jail.d/custom.conf
@@ -0,0 +1,91 @@
+[DEFAULT]
+bantime.increment    = true
+bantime.rndtime      = 30m
+bantime.maxtime      = 60d
+bantime.factor       = 2
+bantime.formula      = ban.Time * math.exp(float(ban.Count+1)*banFactor)/math.exp(1*banFactor)
+bantime.overalljails = true
+#banaction = iptables-multiport
+banaction =ufw
+action = %(action_)s
+#chain = input
+chain = INPUT
+
+maxretry = 3
+bantime = 3h
+findtime = 10m
+ignoreip = 127.0.0.1 173.212.248.254 217.160.175.146 38.242.192.137
+
+
+
+
+destemail = jgv1404@gmail.com danielhg1285@gmail.com
+sender = fail2ban@ctcon.appollo.cloud
+sendername = Fail2Ban Nginx Scanner Alert
+mta = sendmail
+
+[recidive]
+enabled   = true
+bantime   = 9w
+findtime  = 3d
+backend = systemd
+
+[sshd]
+enabled = true
+port = 9022
+banaction = iptables-multiport
+logpath = /var/log/auth.log
+filter = sshd
+backend = systemd
+
+[nginx-botsearch]
+enabled  = true
+filter   = nginx-botsearch
+logpath  = /var/log/nginx/access.log
+port     = http,https
+maxretry = 6
+findtime = 120
+bantime  = 1h
+backend  = polling
+
+
+[nginx-limit-req]
+enabled  = true
+filter   = nginx-limit-req
+logpath  = /var/log/nginx/error.log
+port     = http,https
+maxretry = 5
+findtime = 60
+bantime  = 30m
+backend  = polling
+
+[nginx-bad-request]
+enabled  = true
+filter   = nginx-bad-request
+logpath  = /var/log/nginx/access.log
+port     = http,https
+maxretry = 3
+findtime = 300
+bantime  = 2h
+backend  = polling
+
+[nginx-http-auth]
+enabled  = false
+filter   = nginx-http-auth
+logpath  = /var/log/nginx/error.log
+port     = http,https
+maxretry = 5
+findtime = 600
+bantime  = 1h
+backend  = polling
+
+[nginx-scan-params]
+enabled  = true
+filter   = nginx-scan-params
+logpath  = /var/log/nginx/access.log
+port     = http,https
+maxretry = 2
+findtime = 120
+bantime  = 6h
+backend  = polling
+action = %(action_mwl)s