Banning SSH Abusers
Nov 15, 2007
About a week ago I got logs from the server that looked like this:
unknown (200.87.116.210): 5112 Time(s)
unknown (65.111.177.212): 5005 Time(s)
unknown (bastion.fmg-kopernik.ru): 662 Time(s)
root (bastion.fmg-kopernik.ru): 657 Time(s)
I then turned on the brute force protection cPanel provides, and it went down considerably from there. I'm not concerned at all about it (since the passwords are strong), but I would like to know the best way to determine abusive users (of SSH), and the best way to ban them.
Assuming the server does not have APF installed, or any particular control panel...
View 14 Replies
Dec 20, 2007
Getting these emails, several a day telling me that the server is banning its own allocated IP addresses. Can someone explain what on earth it could possibly be doing to ban its own IP's?
From - Thu Dec 20 16:50:47 2007
X-Account-Key: account3
X-UIDL: GmailId116f88c2a1c060ca
X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
X-Mozilla-Keys:
Delivered-To: myemail@gmail.com
Received: by 10.90.78.14 with SMTP id a14cs288558agb;
Thu, 20 Dec 2007 09:14:04 -0800 (PST)
Received: by 10.142.177.7 with SMTP id z7mr183490wfe.47.1198170843836;
Thu, 20 Dec 2007 09:14:03 -0800 (PST)
Return-Path: <root@host.domain.com.br>
Received: from server.domain.com.br (domain.com.br [xxx.xxx64.138])
by mx.google.com with ESMTP id m8si38592roe.1.2007.12.20.09.14.03;
Thu, 20 Dec 2007 09:14:03 -0800 (PST)
Received-SPF: pass (google.com: domain of root@server.domain.com.br designates xxx.xxx.64.138 as permitted sender) client-ip=xxx.xxx.64.138;
Authentication-Results: mx.google.com; spf=pass (google.com: domain of root@server.domain.com.br designates xxx.xxx.64.138 as permitted sender) smtp.mail=root@server.domain.com.br
Received: from root by server.domain.com.br with local (Exim 4.68)
(envelope-from <root@server.domain.com.br>)
id 1J5OyA-0004us-63
for root@server.domain.com.br; Thu, 20 Dec 2007 15:13:39 -0200
To: root@server.domain.com.br
Subject: IP addresses banned on Thu Dec 20 15:13:39 BRST 2007
Message-Id: <E1J5OyA-0004us-63@server.domain.com.br>
From: root <root@server.domain.com.br>
Date: Thu, 20 Dec 2007 15:13:39 -0200
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - server.domain.com.br
X-AntiAbuse: Original Domain - server.domain.com.br
X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12]
X-AntiAbuse: Sender Address Domain - server.domain.com.br
Banned the following ip addresses on Thu Dec 20 15:13:38 BRST 2007
xxx.xxx64.138 with 151 connections
I have centos 4 / cpanel installed with apf / bfd yet the deny host rules for apf does not show the server IP's listed as banned.
View 2 Replies
View Related
Mar 8, 2007
I need to ban IP range and I inserted say ip 12.44.0.0 in the deny_hosts rules, this should ban range from 12.44 but strange is people from that range still be able to access my site, any idea what went wrong?
View 3 Replies
View Related
Jul 6, 2008
How can i ban Yahoo! Slurp and its IPs using .htacces?
View 3 Replies
View Related
Jan 19, 2007
ý'd want to ban some ip addresses and i tried use iptables. But it doesnt work so far.
what i did is:
root/sbin/ iptables -A INPUT -p tcp -s 193.93.236.0/22 -d any/0 -m state --state NEW -j DROP
as seen, i tried to ban an ip range from my box (coz of spam). But it looks that doesnt work.
What i want to do is to prevent wp spammers to post their disgraceful links to my database.
i am using centos.
View 13 Replies
View Related
Apr 28, 2009
my VPS provided didn't enable a lot of modules and that's why I can use a firewall(csf or apf) and dos deflate script
I need a simple script for it.
First,it has to call this:
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
then there will be something like:
Number : IP address
20 1.2.3.4
40 1.2.3.5
80 1.2.3.6
and then the bash script has to bann IPs with more than 30 connections(In our case: 1.2.3.5 and 1.2.3.6) with this:
iptables -A INPUT -s IP_FOR_BLOCK -j DROP
View 14 Replies
View Related
Oct 28, 2008
I want to stop users from country X from accessing my website, I know I can ban people's IPs but I dont know if it is possible to ban certain geographical area and if so, I haven't got a clue about how to do it.
View 8 Replies
View Related
Oct 9, 2006
Does anyone know how to range ban IPs using IPsec.
I can enter IPs manually but unable to ban an entire RANGE of ips
i.e. For example 172.10.10.10 - 172.1.1.999
Anyone know?
View 4 Replies
View Related
Jun 23, 2008
I installed mod_security and the 403security rules on my VPS (Centos 4.1, Release version of WHM).
Several vBulletin files, including the ajax quick editor and some vbulletin.org add-ons are triggering this rule and banning members' IPs in CSF:
# Restrict witch content encodings we accept.
#
# TODO Most applications support only two encodings for request bodies
# because that is all browsers know how to produce. If you are using
# automated tools to talk to the application you may be using other
# content types and would want to change the list of supported encodings.
#
# Note though that ModSecurity parses only three content encodings:
# application/x-www-form-urlencoded, multipart/form-data request and
# text/xml. The protection provided for any other type of encoding is
# inferior.
#
# TODO There are many applications that are not using multipart/form-data
# encoding (typically only used for file uploads). This content type
# can be disabled if not used.
#
# NOTE We allow any content type to be specified with GET or HEAD
# because some tools incorrectly supply content type information
# even when the body is not present. There is a rule further in
# the file to prevent GET and HEAD requests to have bodies to we're
# safe in that respect.
#
# NOTE Use of WebDAV requires "text/xml" content type.
#
# NOTE Philippe Bourcier (pbourcier AT citali DOT com) reports
# applications running on the PocketPC and AvantGo platforms use
# non-standard content types:
#
# M-Business iAnywhere application/x-mal-client-data
# UltraLite iAnywhere application/octet-stream
#
SecRule REQUEST_METHOD "!^(?:get|head|propfind|options)$"
"chain, t:lowercase, deny,log,auditlog,status:501,msg:'Request content encoding is not allowed by policy',id:'960010',severity:'4'"
SecRule REQUEST_HEADERS:Content-Type "!(?:^(?:application/x-www-form-urlencoded$|multipart/form-data;)|text/xml)"
I don't know how to decipher this rule to know if just removing it is ok, or if it is serving an important purpose. During a couple hour period it was enabled, that rule only seemed to trigger false alarms.
The above was triggered with calls such as [uri "/forums/ajax.php?do=usersearch"] and [uri "/forums/newreply.php?do=postreply&t=11057"]
What I really don't understand is that I have an .htaccess in place to turn off mod_security for the /forums directory:
<IfModule mod_security.c>
SecFilterEngine Off
SecFilterScanPOST Off
</IfModule>
I have also had this rule triggered today when someone tried to access : ...
View 0 Replies
View Related
Jan 19, 2008
I've been happily banning ip's using the output from
netstat -plan|grep :80|awk {'print $5'}|cut -d: -f 1|sort|uniq -c|sort -nk 1
for over a year now, with iptables. However recently, after upgrading to apache 2.2, the connections in netstat get listed as ipv6. A row can look like this for example:
tcp6 0 0 ::ffff:12.123.123.123:80 ::ffff:12.123.12.:12382 ESTABLISHED-
(actual ip addresses changed)
As you can see, the remote ip address isn't complete, it's cut off, so the script used to sum up connections and insert into iptables isnt doing anything.
View 0 Replies
View Related
