ConfigServer Security & Firewall

learn more… | top users | synonyms

-1
votes
0answers
41 views

Postfix outgoing mail through specific port [closed]

I am trying to setup postfix so that it sends out mails from localhost to external recipients using a single port. Currently postfix is trying to send out mails through a random port within the ...
0
votes
0answers
9 views

CSF Firewall unblock countries

I've a VPS Server running CENTOS 6.7 x86_64 with CSF Firewall activated. Sometimes I see in "Firewall Deny IPs" that blocks suddenly connections from my country (Spain) to some of my clients. Not ...
3
votes
1answer
2k 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 ...
-1
votes
0answers
7 views

IPTables/CSF Firewall: Can not connect to Port 22 [duplicate]

I recently tried to configure CSF Firewall to allow connections to Port 22. This is the iptables-output for iptables -L -n | grep :22 tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ...
0
votes
1answer
26 views

Why is lfd prematurely removing blocks?

As you can see in the excerpted log file below (from /var/log/lfd.log), lfd is prematurely removing temporary blocks that it imposes on IPs: Apr 7 13:07:59 host lfd[32117]: (wordpressxmlrpc) Request ...
0
votes
1answer
1k 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 ...
0
votes
2answers
2k 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 ...
0
votes
0answers
47 views

How to stop specific LFD emails

I am running CSF and LFD on a number of Centos servers - whilst it is a great product, I am getting frustrated with controlling the flow of (unnecessary) emails. For example, I use rsync to replicate ...
0
votes
1answer
1k 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 ...
0
votes
1answer
61 views

How does CT_LIMIT (the csf firewall setting) work?

I've been wondering if the csf firewall counts the connections for the last CT_INTERVAL seconds and then compares them to the CT_LIMIT value, or it just counts the current (at the moment) connections ...
0
votes
0answers
58 views

Apache mod-security - Deny access from IP addresses listed in a blacklist file

I want to deny access from IP addresses listed in a blacklist file (not realy matters, but the file is /etc/csf/csf.deny). This is my custom rule (at the moment..): SecRule REQUEST_URI ...
1
vote
3answers
3k views

How to check if CSF firewall is running

My ex-system admin installed CSF on a server witout Admin panel. I can see CSF installed but I am not sure if its currently running or not. I dont want to try to start / stop it. I realized there is ...
2
votes
1answer
5k views

DHCP request error. Send_packet not permitted, How to debug, What does it mean

I recently installed CSF firewall and have made live a new server which is accepting around 600req/second. Its basically a reverse proxy and I found in pingdom and munin that for a particular time, ...
0
votes
2answers
150 views

Haproxy logging doesn't work. Does that have anything to do with csf?

Does Haproxy log every time a connection is made? I have followed instructions from other threads to set up logging via rsyslogd. Even though the files are created (haproxy.log,haproxy-info.log and ...
0
votes
0answers
47 views

Can not block countries in CSF firewall

I have CSF firewall installed + LFD. I have blocked several countries in csf.conf file. Restarted CSF/LFD. CC_DENY = "CN,BR,CA,HK,TW,RO,RU,UA,MD,KZ,TH" I just checked Nginx logfile and found the ...
0
votes
1answer
1k 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 ...
1
vote
0answers
337 views

CSF+LFD not blocking brute force on xmlrpc.php on Wordpress site

I have just installed csf+lfd on my rackspace cloud server (a vanilla LAMP stack running centos 6.7). I only tweaked a couple of settings in the default csf.conf file: the ports allowed in TCP_IN and ...
1
vote
1answer
1k views

csf Integrated User Interface not working

I've installed CSF on ubuntu 14.04 using their official install guide. After disabling UFW with the following command: sudo ufw disable then I have modified csf.conf with the following values: ...
0
votes
0answers
88 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 ...
2
votes
1answer
3k views

CSF/LFD - Suspicious processes when running nginx+php5-fpm+ Mysql

I am running LFD/CSF on three servers and on all servers I have the same problem since the first day when I set-up the server and installed LFD/CSF. I have nginx + php5-fpm + MySQL installed and ...
2
votes
1answer
406 views

How to block all IPs in CSF except few static IPs?

The title is telling I guess. I'm wondering how to block ALL IPs in csf.deny except few trusted IPs? I've googled but could not find the answer.
0
votes
0answers
23 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, ...
0
votes
1answer
101 views

How to block all traffic which is headed to a particular domain

I have recently added an IP address to my VPS. The problem is that the previous owner has abandoned the domain name with its nameservers set on this IP. Although any access to this domain is denied by ...
0
votes
0answers
221 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 ...
-5
votes
1answer
88 views

I cannot block an IP [closed]

I have a redirect rule on my CSF like the below; 17.1.1.13|80|27.5.5.22|80|tcp 17.1.1.13 is my firewall(csf) and 27.5.5.22 is my web server address. So everybody access my web site through the ...
0
votes
1answer
205 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 ...
3
votes
2answers
4k views

How to make permanent changes to iptables of CentOS 5.5

I want to make an iptable rule permanent so if the server is rebooted I won't have to add the rule again. Specifically a rule I have related to nginx being reverse proxy of apache. iptables -t nat ...
0
votes
1answer
593 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 ...
0
votes
1answer
259 views

Can't connect to Ubuntu VPS via SSH,SFTP

When I try to login to my VPS using SSH and SFTP it's not connect to the server. Then I power off and power on the VPS by the VPS provider control panel (digital ocean). Once it boot up, first few ...
0
votes
1answer
561 views

Unblock All Ports in CSF? [closed]

I have CSF installed on a cPanel server and know that I believe that I can unblock ports specifically for outgoing connections in the /etc/csf/csf.conf file. It looks like this line can just be ...
0
votes
1answer
316 views

CSF not adding IPs to deny file as a cron during high loads

I'm running a cron every minute to thwart brute-force attacks. awk '{print $2}' < ipkill.txt | while read ip; do #query geographical info IP address curl -o country.txt ipinfo.io/$ip ...
1
vote
3answers
1k views

csf stop emails related to Process Tracking

I have enabled LSF with CSF since I would like to receive some informations but I am being bombed by the CSF with similar emails: Subject: lfd on [Hostname]: Excessive resource usage: www-data ...
0
votes
1answer
110 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 ...
0
votes
1answer
217 views

CSF Update resets IPTables rules

This is with CentOS 6. On one of my servers, periodically all IPTables rules are simply dropped and all connections start being blocked. It happens fairly randomly once every few days. I have a script ...
0
votes
0answers
306 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 :::* ...
0
votes
2answers
693 views

ConfigServer Security and Firewall — after setup, how much daily management required?

I'm looking at using ConfigServer Security and Firewall (CSF; iptables-based). After I configure it properly, how much daily ongoing management is required of me to keep my server secure? Am I going ...
-3
votes
1answer
1k views

CSF *Port Scan* detected - shared hosting [closed]

We modified a few options in ConfigServer Firewall configuraion. Ever since the CSF blocking a lot of IP address. Following print sreen: http://oi60.tinypic.com/kdlnh3.jpg What can I modify thereto ...
0
votes
1answer
703 views

Filezilla can not connect my new ftp port on centos 6.6

I have a webserver running on Centos 6.6. Recently Config Server Security Firewall send me over 150 email about some malicious bots trying to guess my clients ftp users and passwords. I hate ...
1
vote
1answer
506 views

Suspicious Linux binary file in /tmp/ - Munin?

I have a CENTOS 6.6 x86_64 server running ConfigServer Firewall (installed by us) and Munin (installed by the datacentre). CSF has recently (and for no apparent reason) started sending us warnings, ...
-1
votes
1answer
119 views

CentOS - how to tell what conf file CSF (firewall) is using? csf.conf then restart not updating [closed]

in /etc/csf/csf.conf the following is setup LF_CPANEL = "5" LF_CPANEL_PERM = "3600" restarting csf by doing the following csf -r does not seem to have an impact on the above attributes. ...
1
vote
0answers
78 views

VPS Unknown Read/Write [closed]

I had an lfd email alert - I have installed CSF - today revealing that my server (Centos 6.6) has been using a lot of server resources for 5 minutes. I checked my VPS graphs and noticed that my ...
1
vote
2answers
77 views

Can't block spammy IP

I'm being attacked by 37.59.4.76. It's sending me a great amount of data, which is destroying my dataplan. I've added the iptables Chain num pkts bytes target prot opt in out ...
1
vote
0answers
57 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: ...
-5
votes
3answers
2k views

Not using SSH Pubkey Authentication is really serious security flaw compare to regular Password Authentication

How would using PubkeyAuthentication would be more secure than using PasswordAuthentication, considering the following facts: Default SSH port is moved from its default Firewall blacklists an IP ...
0
votes
1answer
70 views

cannot send emails to other Web servers

I'm trying to limit my server's open ports in CSF. The IPv4 port settings include: # Allow incoming TCP ports TCP_IN = "22,25,53,80,110,143,443,587,3654,53343” # Allow outgoing TCP ports TCP_OUT = ...
1
vote
1answer
267 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 ...
1
vote
1answer
664 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 ...
0
votes
2answers
248 views

Openning a port in my CentOS server [closed]

I'm trying to open a port in my CentOS server... I tried using iptables, adding the "-A INPUT -p udp -m udp --dport portnum -j ACCEPT" and didn't work. I tried installing CSF, adding the ports and ...
1
vote
0answers
1k 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 ...
1
vote
1answer
423 views

CSF Blocking IP on Fail POP3 and cPanel [closed]

I have a VPS with cPanel and i am running around 400+ email accounts under a Office Network, I don't have STATIC IP but i am facing issue when any 1 of employee forget the password and try to access ...