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#!/bin/bash
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#!/bin/bash
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#  $Id: alcasar.sh 3230 2024-11-06 23:38:15Z rexy $
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#  $Id: alcasar.sh 3231 2024-11-10 23:12:08Z rexy $
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# ALCASAR is a Free and open source NAC (Network Access Controler) created by Franck BOUIJOUX (3abtux), Pascal LEVANT and Richard REY (Rexy)
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# ALCASAR is a Free and open source NAC (Network Access Controler) created by Franck BOUIJOUX (3abtux), Pascal LEVANT and Richard REY (Rexy)
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# ALCASAR is based on a stripped Mageia (LSB) with the following open source softwares Coovachilli, freeradius, mariaDB, apache, php, netfilter, e2guardian, ntpd, openssl, unbound, gammu, Ulog, fail2ban, vnstat, wkhtml2pdf, ipt_NETFLOW, NFsen and NFdump
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# ALCASAR is based on a stripped Mageia (LSB) with the following open source softwares Coovachilli, freeradius, mariaDB, apache, php, netfilter, e2guardian, ntpd, openssl, unbound, gammu, Ulog, fail2ban, vnstat, wkhtml2pdf, ipt_NETFLOW, NFsen and NFdump
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# contact : info@alcasar.net
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# contact : info@alcasar.net
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} # End of cron()
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} # End of cron()
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########################################################################
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########################################################################
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##                              "Fail2Ban"                            ##
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##                              "Fail2Ban"                            ##
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##- Adapt conf file to ALCASAR                                        ##
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##- Adapt conf file to ALCASAR                                        ##
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##- Secure items : DDOS, SSH-Brute-Force, Intercept & ACC brute-Force ##
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##- Secure items : SSH, intercept & ACC brute-Force + evasive + pwd   ##
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########################################################################
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########################################################################
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fail2ban()
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fail2ban()
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{
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{
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# adapt fail2ban to Mageia (fedora like) & ALCASAR behaviour
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# adapt fail2ban to Mageia (fedora like) & ALCASAR behaviour
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	[ -e /etc/fail2ban/jail.conf.default ] || cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.conf.default
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	[ -e /etc/fail2ban/jail.conf.default ] || cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.conf.default
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	$SED "s?^before =.*?before = paths-mageia.conf?g" /etc/fail2ban/jail.conf
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	$SED "s?^before =.*?before = paths-mageia.conf?g" /etc/fail2ban/jail.conf
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# add 5 jails and their filters
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# add 5 jails and their filters
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## sshd : Ban after 3 failed attempts (ie. brute-force). This "jail" uses the default "sshd" f2b filter.
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## sshd : Ban after 5 failed attempts (ie. brute-force). This "jail" uses the default "sshd" f2b filter.
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	cat << EOF > /etc/fail2ban/jail.d/01-alcasar_sshd.conf
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	cat << EOF > /etc/fail2ban/jail.d/01-alcasar_sshd.conf
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[sshd]
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[sshd]
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enabled = true
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enabled = true
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#enabled  = false
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#enabled  = false
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maxretry = 3
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maxretry = 5
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bantime = 3m
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bantime = 3m
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findtime = 5m
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findtime = 3m
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EOF
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EOF
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## lighttpd-auth : Ban after 3 failed attempts on ACC. This "jail" uses the default "lighttpd-auth" f2b filter.
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## alcasar_httpd-auth : Ban after 3 failed attempts on ACC. This "jail" uses the default "apache-auth" f2b filter.
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#	cat << EOF > /etc/fail2ban/jail.d/02-alcasar_lighttpd-auth.conf
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	cat << EOF > /etc/fail2ban/jail.d/02-alcasar_httpd-auth.conf
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#[lighttpd-auth]
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[apache-auth]
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#enabled = true
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enabled = true
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#enabled  = false
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#enabled  = false
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#maxretry = 3
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maxretry = 3
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#bantime = 3m
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bantime = 3m
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#findtime = 3m
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findtime = 3m
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#EOF
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EOF
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## mod-evasive : Ban after 3 failed retrieve page attempts (ie : unknown page)
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## mod-evasive : Ban after 3 failed retrieve page attempts (ie : unknown page)
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	cat << EOF > /etc/fail2ban/jail.d/03-alcasar_mod-evasive.conf
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	cat << EOF > /etc/fail2ban/jail.d/03-alcasar_mod-evasive.conf
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[alcasar_mod-evasive]
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[alcasar_mod-evasive]
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#enabled = true
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enabled = true
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enabled = false
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#enabled = false
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backend = auto
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backend = auto
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filter = alcasar_mod-evasive
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filter = alcasar_mod-evasive
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action = iptables-allports[name=alcasar_mod-evasive]
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action = iptables-allports[name=alcasar_mod-evasive]
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logpath = /var/log/httpd/access.log
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logpath = /var/log/httpd/access_log
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maxretry = 3
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maxretry = 3
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bantime = 3m
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bantime = 3m
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findtime = 3m
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findtime = 3m
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EOF
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EOF
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_mod-evasive.conf
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_mod-evasive.conf
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enabled = true
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enabled = true
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#enabled = false
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#enabled = false
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backend = auto
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backend = auto
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filter = alcasar_intercept
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filter = alcasar_intercept
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action = iptables-allports[name=alcasar_intercept]
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action = iptables-allports[name=alcasar_intercept]
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logpath = /var/log/httpd/access.log
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logpath = /var/log/httpd/access_log
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maxretry = 5
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maxretry = 5
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bantime = 3m
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bantime = 3m
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findtime = 3m
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findtime = 3m
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EOF
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EOF
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_intercept.conf
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_intercept.conf
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enabled = true
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enabled = true
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#enabled = false
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#enabled = false
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backend = auto
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backend = auto
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filter = alcasar_change-pwd
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filter = alcasar_change-pwd
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action = iptables-allports[name=alcasar_change-pwd]
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action = iptables-allports[name=alcasar_change-pwd]
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logpath = /var/log/httpd/access.log
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logpath = /var/log/httpd/access_log
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maxretry = 5
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maxretry = 5
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bantime = 3m
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bantime = 3m
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findtime = 3m
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findtime = 3m
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EOF
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EOF
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_change-pwd.conf
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	cat << EOF > /etc/fail2ban/filter.d/alcasar_change-pwd.conf