Trong máy chủ của tôi, cổng ssh không phải là tiêu chuẩn 22. Tôi đã đặt một cổng khác. Nếu tôi thiết lập fail2ban, nó có thể phát hiện cổng đó không? Làm thế nào tôi có thể bảo nó kiểm tra cổng đó chứ không phải cổng 22?
Đầu ra của iptables -L -v -n:
Chain fail2ban-ssh (1 references)
pkts bytes target prot opt in out source destination
0 0 DROP all -- * * 119.235.2.158 0.0.0.0/0
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain fail2ban-ssh-ddos (0 references)
pkts bytes target prot opt in out source destination
Đầu ra của trạng thái dịch vụ iptables:
iptables: unrecognized service
Triệu tập của fail2ban-regex /var/log/auth.log /etc/fail2ban/filter.d/sshd.conf:
Summary
=======
Addresses found:
[1]
[2]
[3]
113.59.222.240 (Wed Mar 21 18:24:47 2012)
113.59.222.240 (Wed Mar 21 18:24:52 2012)
119.235.14.153 (Wed Mar 21 21:52:53 2012)
113.59.222.21 (Thu Mar 22 07:50:44 2012)
176.9.57.203 (Fri Mar 23 19:34:29 2012)
176.9.57.203 (Fri Mar 23 19:34:42 2012)
113.59.222.56 (Sat Mar 31 14:23:52 2012)
113.59.222.56 (Sat Mar 31 14:24:05 2012)
119.235.14.183 (Mon Apr 02 20:49:13 2012)
119.235.14.168 (Sat Apr 21 09:58:56 2012)
119.235.2.158 (Wed Apr 25 13:11:03 2012)
119.235.2.158 (Wed Apr 25 13:11:40 2012)
119.235.2.158 (Wed Apr 25 13:11:43 2012)
119.235.2.158 (Wed Apr 25 13:11:47 2012)
119.235.2.158 (Wed Apr 25 13:12:49 2012)
119.235.2.158 (Wed Apr 25 13:12:52 2012)
119.235.2.158 (Wed Apr 25 13:12:55 2012)
119.235.2.158 (Wed Apr 25 13:12:58 2012)
119.235.2.158 (Wed Apr 25 13:13:02 2012)
119.235.2.158 (Wed Apr 25 13:13:04 2012)
119.235.2.158 (Wed Apr 25 13:13:25 2012)
119.235.2.158 (Wed Apr 25 13:19:18 2012)
119.235.2.158 (Wed Apr 25 13:19:52 2012)
119.235.2.158 (Wed Apr 25 13:19:55 2012)
119.235.2.158 (Wed Apr 25 13:19:55 2012)
119.235.2.158 (Wed Apr 25 13:19:58 2012)
119.235.2.158 (Wed Apr 25 13:20:02 2012)
119.235.2.158 (Wed Apr 25 13:20:05 2012)
119.235.2.158 (Wed Apr 25 13:40:16 2012)
[4]
[5]
119.235.2.158 (Wed Apr 25 13:11:38 2012)
119.235.2.158 (Wed Apr 25 13:12:46 2012)
119.235.2.158 (Wed Apr 25 13:19:49 2012)
[6]
119.235.2.155 (Wed Mar 21 13:13:30 2012)
113.59.222.240 (Wed Mar 21 18:24:43 2012)
119.235.14.153 (Wed Mar 21 21:52:51 2012)
176.9.57.203 (Fri Mar 23 19:34:26 2012)
119.235.2.158 (Wed Apr 25 13:19:15 2012)
[7]
[8]
[9]
[10]
Date template hits:
1169837 hit(s): MONTH Day Hour:Minute:Second
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second Year
0 hit(s): WEEKDAY MONTH Day Hour:Minute:Second
0 hit(s): Year/Month/Day Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/Month/Year Hour:Minute:Second
0 hit(s): Day/MONTH/Year:Hour:Minute:Second
0 hit(s): Month/Day/Year:Hour:Minute:Second
0 hit(s): Year-Month-Day Hour:Minute:Second
0 hit(s): Day-MONTH-Year Hour:Minute:Second[.Millisecond]
0 hit(s): Day-Month-Year Hour:Minute:Second
0 hit(s): TAI64N
0 hit(s): Epoch
0 hit(s): ISO 8601
0 hit(s): Hour:Minute:Second
0 hit(s): <Month/Day/Year@Hour:Minute:Second>
Success, the total number of match is 37
However, look at the above section 'Running tests' which could contain important
information.
các jail.conf:
# Fail2Ban configuration file.
#
# This file was composed for Debian systems from the original one
# provided now under /usr/share/doc/fail2ban/examples/jail.conf
# for additional examples.
#
# To avoid merges during upgrades DO NOT MODIFY THIS FILE
# and rather provide your changes in /etc/fail2ban/jail.local
#
# Author: Yaroslav O. Halchenko <debian@onerussian.com>
#
# $Revision: 281 $
#
# The DEFAULT allows a global definition of the options. They can be override
# in each jail afterwards.
[DEFAULT]
# "ignoreip" can be an IP address, a CIDR mask or a DNS host
ignoreip = 127.0.0.1
bantime = 14400
maxretry = 3
# "backend" specifies the backend used to get files modification. Available
# options are "gamin", "polling" and "auto".
# yoh: For some reason Debian shipped python-gamin didn't work as expected
# This issue left ToDo, so polling is default backend for now
backend = polling
#
# Destination email address used solely for the interpolations in
# jail.{conf,local} configuration files.
destemail = root@localhost
#
# ACTIONS
#
# Default banning action (e.g. iptables, iptables-new,
# iptables-multiport, shorewall, etc) It is used to define
# action_* variables. Can be overriden globally or per
# section within jail.local file
banaction = iptables-multiport
# email action. Since 0.8.1 upstream fail2ban uses sendmail
# MTA for the mailing. Change mta configuration parameter to mail
# if you want to revert to conventional 'mail'.
mta = sendmail
# Default protocol
protocol = tcp
#
# Action shortcuts. To be used to define action parameter
# The simplest action to take: ban only
action_ = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]
# ban & send an e-mail with whois report to the destemail.
action_mw = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]
%(mta)s-whois[name=%(__name__)s, dest="%(destemail)s", protocol="%(protocol)s]
# ban & send an e-mail with whois report and relevant log lines
# to the destemail.
action_mwl = %(banaction)s[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s]
%(mta)s-whois-lines[name=%(__name__)s, dest="%(destemail)s", logpath=%(logpath)s]
# Choose default action. To change, just override value of 'action' with the
# interpolation to the chosen action shortcut (e.g. action_mw, action_mwl, etc) in jail.local
# globally (section [DEFAULT]) or per specific section
action = %(action_)s
#
# JAILS
#
# Next jails corresponds to the standard configuration in Fail2ban 0.6 which
# was shipped in Debian. Enable any defined here jail by including
#
# [SECTION_NAME]
# enabled = true
#
# in /etc/fail2ban/jail.local.
#
# Optionally you may override any other parameter (e.g. banaction,
# action, port, logpath, etc) in that section within jail.local
[ssh]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 4
# Generic filter for pam. Has to be used with action which bans all ports
# such as iptables-allports, shorewall
[pam-generic]
enabled = false
# pam-generic filter can be customized to monitor specific subset of 'tty's
filter = pam-generic
# port actually must be irrelevant but lets leave it all for some possible uses
port = all
banaction = iptables-allports
port = anyport
logpath = /var/log/auth.log
maxretry = 6
[xinetd-fail]
enabled = false
filter = xinetd-fail
port = all
banaction = iptables-multiport-log
logpath = /var/log/daemon.log
maxretry = 2
[ssh-ddos]
enabled = true
port = ssh
filter = sshd-ddos
logpath = /var/log/auth.log
maxretry = 6
#
# HTTP servers
#
[apache]
enabled = false
port = http,https
filter = apache-auth
logpath = /var/log/apache*/*error.log
maxretry = 6
# default action is now multiport, so apache-multiport jail was left
# for compatibility with previous (<0.7.6-2) releases
[apache-multiport]
enabled = false
port = http,https
filter = apache-auth
logpath = /var/log/apache*/*error.log
maxretry = 6
[apache-noscript]
enabled = false
port = http,https
filter = apache-noscript
logpath = /var/log/apache*/*error.log
maxretry = 6
[apache-overflows]
enabled = false
port = http,https
filter = apache-overflows
logpath = /var/log/apache*/*error.log
maxretry = 2
[nginx-auth]
enabled = true
filter = nginx-auth
action = iptables-multiport[name=NoAuthFailures, port="http,https"]
logpath = /var/log/nginx*/*error*.log
bantime = 600 # 10 minutes
maxretry = 6
[nginx-login]
enabled = true
filter = nginx-login
action = iptables-multiport[name=NoLoginFailures, port="http,https"]
logpath = /var/log/nginx*/*access*.log
bantime = 600 # 10 minutes
maxretry = 6
[nginx-badbots]
enabled = true
filter = apache-badbots
action = iptables-multiport[name=BadBots, port="http,https"]
logpath = /var/log/nginx*/*access*.log
bantime = 86400 # 1 day
maxretry = 1
[nginx-noscript]
enabled = true
action = iptables-multiport[name=NoScript, port="http,https"]
filter = nginx-noscript
logpath = /var/log/nginx*/*access*.log
maxretry = 6
bantime = 86400 # 1 day
[nginx-proxy]
enabled = true
action = iptables-multiport[name=NoProxy, port="http,https"]
filter = nginx-proxy
logpath = /var/log/nginx*/*access*.log
maxretry = 0
bantime = 86400 # 1 day
#
# FTP servers
#
[vsftpd]
enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = vsftpd
logpath = /var/log/vsftpd.log
# or overwrite it in jails.local to be
# logpath = /var/log/auth.log
# if you want to rely on PAM failed login attempts
# vsftpd's failregex should match both of those formats
maxretry = 6
[proftpd]
enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = proftpd
logpath = /var/log/proftpd/proftpd.log
maxretry = 6
[wuftpd]
enabled = false
port = ftp,ftp-data,ftps,ftps-data
filter = wuftpd
logpath = /var/log/auth.log
maxretry = 6
#
# Mail servers
#
[postfix]
enabled = false
port = smtp,ssmtp
filter = postfix
logpath = /var/log/mail.log
[couriersmtp]
enabled = false
port = smtp,ssmtp
filter = couriersmtp
logpath = /var/log/mail.log
#
# Mail servers authenticators: might be used for smtp,ftp,imap servers, so
# all relevant ports get banned
#
[courierauth]
enabled = false
port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
filter = courierlogin
logpath = /var/log/mail.log
[sasl]
enabled = false
port = smtp,ssmtp,imap2,imap3,imaps,pop3,pop3s
filter = sasl
# You might consider monitoring /var/log/warn.log instead
# if you are running postfix. See http://bugs.debian.org/507990
logpath = /var/log/mail.log
# DNS Servers
# These jails block attacks against named (bind9). By default, logging is off
# with bind9 installation. You will need something like this:
#
# logging {
# channel security_file {
# file "/var/log/named/security.log" versions 3 size 30m;
# severity dynamic;
# print-time yes;
# };
# category security {
# security_file;
# };
# };
#
# in your named.conf to provide proper logging
# !!! WARNING !!!
# Since UDP is connectionless protocol, spoofing of IP and immitation
# of illegal actions is way too simple. Thus enabling of this filter
# might provide an easy way for implementing a DoS against a chosen
# victim. See
# http://nion.modprobe.de/blog/archives/690-fail2ban-+-dns-fail.html
# Please DO NOT USE this jail unless you know what you are doing.
#[named-refused-udp]
#
#enabled = false
#port = domain,953
#protocol = udp
#filter = named-refused
#logpath = /var/log/named/security.log
[named-refused-tcp]
enabled = false
port = domain,953
protocol = tcp
filter = named-refused
logpath = /var/log/named/security.log
Tôi chỉ nhận thấy một lỗi trong fail2ban log:
2012-04-25 14: 57: 29.359 fail2ban.ilities.action: ERROR iptables -N fail2ban-ssh-ddos
@BartDeVos Hệ điều hành Ubuntu 11.04 ... "/etc/init.d/iptables status" = bash: /etc/init.d/iptables: Không có tệp hoặc thư mục như vậy ... Lưu ý: Tôi sử dụng APF để quản lý iptables!
—
THpub
Vâng, có lẽ có vấn đề của bạn. Làm thế nào về việc vô hiệu hóa apf, thiết lập một tường lửa cơ bản với iptables và xem vấn đề có còn tồn tại không?
—
Bart De Vos
@BartDeVos Đó là vấn đề ... Tôi đang ở trong một hệ thống VPS ... Tôi nghĩ rằng openvz của nó ... Vì vậy, một số tường lửa như UFW sẽ không hoạt động ở đây!
—
THpub
Bạn có chạy được
—
Bart De Vos
ufw enablekhông
/etc/init.d/iptables status