Проект «SnakeProject» Михаила Козлова

⇒ Voice(Asterisk\Cisco) ⇐

CISCO

Microsoft

Powershell

Python

SQL\T-SQL

FreeBSD and Nix

1С

Общая

WEB Разработка

ORACLE SQL \ JAVA

Мото

Debian + asterisk 13 + fail2ban

Установка fail2ban + Asterisk13 на Debian

Установим:
apt-get install fail2ban

Конфиги:
/etc/fail2ban/fail2ban.conf — файл настройки запуска процесса fail2ban
/etc/fail2ban/jail.conf — файл настройки защиты сервисов

Пример с ssh:
[ssh]
enabled  = true
port     = ssh
filter   = sshd
logpath  = /var/log/auth.log
maxretry = 3

Где maxretry - количество неудачных попыток, после которых применится блокирока

Далее правила: /etc/fail2ban/filter.d/asterisk.conf

# Fail2Ban filter for asterisk authentication failures # [INCLUDES] # Read common prefixes. If any customizations available -- read them from # common.local before = common.conf [Definition] _daemon = asterisk __pid_re = (?:\[\d+\]) # All Asterisk log messages begin like this: log_prefix= (?:NOTICE|SECURITY)%(__pid_re)s:?(?:\[C-[\da-f]*\])? \S+:\d*( in \w+:)? failregex = ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Registration from '[^']*' failed for '<HOST>(:\d+)?' - (Wrong password|Username/auth name mismatch|No matching peer found|Not a local domain|Device does not match ACL|Peer is not supposed to register|ACL error \(permit/deny\)|Not a local domain)$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Call from '[^']*' \(<HOST>:\d+\) to extension '\d+' rejected because extension not found in context 'default'\.$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Host <HOST> failed to authenticate as '[^']*'$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s No registration for peer '[^']*' \(from <HOST>\)$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Host <HOST> failed MD5 authentication for '[^']*' \([^)]+\)$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s Failed to authenticate (user|device) [^@]+@<HOST>\S*$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s (?:handle_request_subscribe: )?Sending fake auth rejection for (device|user) \d*<sip:[^@]+@<HOST>>;tag=\w+\S*$ ^(%(__prefix_line)s|\[\]\s*)%(log_prefix)s SecurityEvent="(FailedACL|InvalidAccountID|ChallengeResponseFailed|InvalidPassword)",EventTV="[\d-]+",Severity="[\w]+",Service="[\w]+",EventVersion="\d+",AccountID="\d*",SessionID="0x[\da-f]+",LocalAddress="IPV[46]/(UD|TC)P/[\da-fA-F:.]+/\d+",RemoteAddress="IPV[46]/(UD|TC)P/<HOST>/\d+"(,Challenge="\w+",ReceivedChallenge="\w+")?(,ReceivedHash="[\da-f]+")?(,ACLName="\w+")?$ ^(%(__prefix_line)s|\[\]\s*WARNING%(__pid_re)s:?(?:\[C-[\da-f]*\])? )Ext\. s: "Rejecting unknown SIP connection from <HOST>"$ ignoreregex = # Author: Xavier Devlamynck / Daniel Black # # General log format - main/logger.c:ast_log # Address format - ast_sockaddr_stringify # # First regex: channels/chan_sip.c # # main/logger.c:ast_log_vsyslog - "in {functionname}:" only occurs in syslog

Добавляем: /etc/fail2ban/jail.conf
[asterisk] enabled = true filter = asterisk action = iptables-multiport[name=asterisk-tcp, port="5060,5061", protocol=tcp] iptables-multiport[name=asterisk-udp, port="5060,5061", protocol=udp] sendmail-whois[name=Asterisk, dest=root@localhost, sender=fail2ban@localhost] logpath = /var/log/asterisk/messages maxretry = 3 bantime = 600100

bantime - время бана

Стартуем:
/etc/init.d/fail2ban restart

Смотрим iptables:
iptables -L -v -n

Статус fail2ban, выведет список клеток:
fail2ban-client status 

Статус fail2ban клетки asterisk:
fail2ban-client status asterisk

Разбанить ip:
fail2ban-client set asterisk unbanip 192.168.10.145

Илить удалить самое верхнее правило из цепочки (например fail2ban-asterisk-udp) в iptables:
iptables -D fail2ban-asterisk-udp 1

Комментарии пользователей