ConfigServer Security & Firewall

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177 views

SSH connection gets dropped when attempting to deploy site using rocketeer

I'm trying to deploy a Laravel site to a development server (cPanel based) using Rocketeer. I am having a problem maintaining the SSH connection, and the server is dropping the connection after ...
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1answer
447 views

CSF cc_deny is not working

I tried to block a country in CSF Firewall I followed this post http://www.2daygeek.com/how-to-block-a-country-using-csf-firewall/ to block ip from China cc_deny ="CN" While I execute csf -r I ...
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1answer
1k views

How to white-list specific PHP script process in CSF?

I repeatedly receive a "Suspicious Process" notice from lfd. I'm 100% positive that the PHP script triggering this warning is safe. I wrote it myself and it makes some cross server calls that must ...
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507 views

csf/lfd parameter that prevent smtp attacks?

I have a 4~5MB logwatch like this every day! someone like to hack my smtp: .... --------------------- sasl auth daemon Begin ------------------------ SASL Authentications failed 3965 Time(s) ...
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1answer
391 views

CSF / LFD picking up suspicious users in OpenVZ containers

I have OpenVZ running on a box with CSF / LFD installed. I like the way LFD can alert me of suspicious processes running on the HardwareNode itself. However, LFD is emailing me about every ...
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58 views

How do I use CSF to redirect domain requests to a port?

I have a server setup that uses two different webservers with different subdomains. Right now the servers listen on different ports (80 & 4000) So users don't have to put in :4000 I'd like to ...
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66 views

IPTables Rules Being Loaded From Somewhere

I'm having troubles connecting (meaning I can't connect to any IP or port) to my server and it appears that the problem was to do with CSF. I uninstalled CSF (by running /etc/csf/uninstall.sh) and ...
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366 views

NUMIPTENT is too low to add 5333 rules (CSF firewall error)

The VPS iptables rule limit (numiptent) is too low to add 5333 rules (19469/24000) CSF stopped working spontaneously today. Saying it can't start because it can't add 5333 rules to an apparent ...
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1k views

lots of UDP_IN Blocked errors

Since I have reinstalled my OS, I'm getting lots of UDP_IN Blocked errors in my messages log. Can anyone kindly explain what the error say exactly and what I can do to get rid of this error. Aug 8 ...
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1answer
800 views

csf lfd denied by desktop because of mod_security

I have a WHM/Cpanel server with CSF/LFD installed and mod_security enabled. I used to login to WHM/cpanel from one of my local windows box through a linux (Centos 5)NAT gateway(with a public IP ...
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900 views

IPTABLES nat maintaining source IP address with CSF

We have been using CSF on a virtualized (OpenVZ) environment successfully for a while combining venet and bridged interfaces so we can use public IPs + local addressed virtual systems. Kernel IP ...
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331 views

Interpreting CSF emails

I get emails from CSF every time it blocks someone. Here's one I got this morning: Time: Sat Jan 19 10:17:24 2013 -0800 IP: <REDACTED> (US/United States/-) Hits: 21 Blocked: ...
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940 views

CSF Log Watching

I run suphp so the uid of scripts is for the user not the webserver. My log files are also in /home/$user/logs/error.log CSF only monitors /var/log/apache2/error.log However because of my setup i ...
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351 views

Munin FW_Conntrack Timing Out

I recently installed CSF firewall. Immediately after this, my Munin has stopped showing me graphs for Connections through firewall and ipconntrack. I looked into log files and found this ...
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29 views

CSF Configuration Ignore NodeJS for Excessive Time

I am getting a lot of these: Excessive resource usage: *account* (9580 (Parent PID:9574)) Time: Sat Oct 18 15:20:00 2014 -0400 Account: *account* Resource: Process Time Exceeded: ...
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954 views

CSF LFD suspicious process under user apache

I think my server got DOS'ed via HTTP(port 80). When I checked apache access log, it showed that specific IPs requested /GET/HTTP1.1 more than 150 times in a minute. And I've been trying to limit ...
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180 views

CSF: Changing portflood settings to deny IP longer than second interval?

I've recently been under attack and I'm configuring CSF firewall for my Ubuntu server (latest). I found out portflood settings only block the ip for the specified second count, but I would like ...
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139 views

CSF/LFD configuration settings

/bin/gtar -c -f - -X /home/{USER}/cpbackup-exclude.conf -X /etc/cpbackup-exclude.conf . How can I white list these strings? I've tried stuff like: pcmd: /bin/gtar -c -f - -X /home/* and still ...
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12 views

lfd login alert except one user/IP

I am using csf/lfd. I whould like to receive ssh login alert except for one user/or IP. I used LF_SSH_EMAIL_ALERT but can not find any parameter to exclude user. the goal is disabling lfd login alter ...
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9 views

CSF ignore list skips some ignore exclusions

I have try to prevent sending Suspicious File Alert emails which contain: File: /tmp/netatop-0.5/netatop.init Reason: Script, starts with #! File: /tmp/netatop-0.5/mkversion Reason: Script, ...
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45 views

exim queue notification if a domain is sending more than x number of emails

I am running Exim as an MTA. I have also implemented a Per hour Per domain email Limit. Still I see that my IP reputation goes bad if a spammer sends more than x amount of emails in 24 hours or so. I ...
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135 views

CSF does not open port

I'm having a Ubuntu 14.04 server which has a TomCat installation listening on port 8080. I installed CSF today. Following is netstat -tulpn tcp6 0 0 :::8080 :::* ...
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151 views

How to config PORT KNOCKING on CSF and access it by linux?

I'm trying to run port knocking work on a CSF on a small VPS, i setup this: 1 - the result of csf first test ok 2 - TCP_IN = "53,80" TCP_OUT = "53,80,113,443" UDP_IN = "53" UDP_OUT = "53,113,123" ...
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162 views

Extract IPs from exim_rejectlog with particular error then automatically add IP to a csf or iptable

Is there a command to do this in linux? For example extract IPs from exim_rejectlog with particular error dropped: too many syntax or protocol errors Count how many times an IP is listed and if it ...