Questions tagged [csf]

ConfigServer Security & Firewall

Filter by
Sorted by
Tagged with
1
vote
0answers
143 views

Failed to start IPv4 firewall with iptables

I'm running CentOS 8 Webserver and recently I had some issues with the CSF Firewall, the CSF Service is running but the LFD is failed. I did some research and I was able to fix it by doing iptables --...
0
votes
0answers
60 views

Manage ports in Docker with CSF?

There are several questions about this, I read them all but it did not solve my problem. I wrote this question to answer this issue comprehensively once and for all to solve the problems of people ...
0
votes
0answers
34 views

Error* The path to iptables is either not set or incorrect for IPTABLES [/usr/sbin/ip6tables]

I use CSF Firewall of Configserver en several servers. After day 23/03/21 I see a problem in one server with Ubuntu 20.04 *Error* The path to iptables is either not set or incorrect for IPTABLES [/usr/...
0
votes
1answer
137 views

CSF firewall - Only allow FTP access to users connecting via specific hostname

I'd like to only allow FTP access to users who connect via a specific hostname like: portal4321.vps22.hostingserver.com. And block every request which tries to connect to the FTP in a different manner,...
0
votes
0answers
46 views

CSF blocks ip with 2 login failure in wordpress

I have CSF on my server and I use directadmin. when a user has 2 login failure in wordpress website csf add code like this in .htaccess file: # BEGIN Brute Force Login Protection <FilesMatch "....
0
votes
1answer
138 views

CSF not blocking traffic to docker

CSF is installed at host and following is applied https://github.com/juli3nk/csf-post-docker When IP is blocked in CSF, ICMP and request to all other ports gets blocked (except the ones which are ...
0
votes
0answers
102 views

block ips with csf using a custom regex from a custom log file

I have wordpress on two web server nodes behind a loadbalancer server (all of them have CSF). All of them are centos7 and also directadmin is installed (if relevant). and I log "failed login IPs&...
0
votes
1answer
310 views

How to automatically block with MODSEC or CSF an IP Address when it tries to access a URL

We have in our server logs every day continuos bot trying to access the below for example: Requests with error response codes 404 Not Found /favicon.ico: 3 Time(s) /3ckkB-ZOp30: 2 Time(s) /adminer-3....
1
vote
1answer
70 views

csf: how to override TCP_IN?

I'm using csf v14.05 on my Debian-8-based server. In csf.conf, I have the following: TCP_IN = "53,80,110,119,143,443,465,587,953,993,995" I want to selectively override this in csf.deny, ...
-1
votes
1answer
55 views

How to connect to our distant server using a local hostname from dyn or -noip on local computer client instead of computer ip?

We using CSF as firewall on CPANEL. We blacklisted all countries except few. Within the CSF there is a dyddns function allowing a FQDN to connect through... We then set up a no-ip.com account with IP/...
0
votes
1answer
886 views

CSF failed to Start after Ubuntu 20.04 upgrade from 18.04

Today I have upgraded my Ubuntu 18.04.04 VPS server to Ubuntu 20.04. Now CSF not starting and shows the following error and not start the CSF service. *Error* The path to iptables is either not set or ...
3
votes
1answer
1k views

Running docker containers only local behind csf firewall

I want to access docker containers only locally behind the csf firewall on a remote Ubuntu server. I changed the DOCKER settings options in /etc/csf/csf.conf to 1 to allow docker to change iptable ...
1
vote
0answers
102 views

CSF/LFD: Firewall automatically disabling again and again

I have setup a droplet on Digital Ocean, and installed CentOS Web Panel. After the initial configuration, I've enabled CSF/LFD firewall. But it is automatically disabling, again and again. I have ...
1
vote
2answers
1k views

Brute Force attack in DirectAdmin

I have problem with brute force monitor in direct admin. Every minute i get info like this: 15705610210001 52.187.17.107 123 1 sshd4 Oct 8 20:56:24 server sshd[10817]: Failed password for ...
0
votes
1answer
361 views

Cloudflare behind site iptables not blocking HTTP and HTTPS ports

When the Fail2ban trigger an IP ban action, I want to block all the ports on my Ubuntu Server. Right now, I use banaction = iptables-allports and CSF. At this moment it only blocked SSH port, even if ...
1
vote
1answer
1k views

How to config CSF to allow postrouting in iptables for installing OpenVPN?

I am installing OpenVPN on my server and according to the tutorial I'm following I have to add the following line to iptables: iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE I add it and save ...
1
vote
1answer
443 views

Docker, csf and mariadb connection

I have a host with csf firewall allowing some external ports like ssh, http, https. I have now installed docker and mariadb through docker. I use docker run command with -p 6000:3306, so that means ...
1
vote
1answer
2k views

Block direct port 80 access on default IP using iptables?

I am using nginx with cloudflare in front of my sites to protect them from layer 7 attacks but now some attackers found this new way and they are daily attacking my default IP directly with layer 7 ...
0
votes
1answer
604 views

iptables shows a warning message but I am unable to solve it

When I typed this command in SSH to see rules, it returns the following warning message in iptables. I am wondering what is it and how to solve it. iptables -L LOG tcp -- anywhere ...
1
vote
1answer
2k views

FTP command line: Could not open data connection to port 48412: Connection timed out

I'm trying to send a file using ftp command line. It's working in my laptop by not in my vps server. ftp -v -n <<EOF open ftp.myserver.com user username password cd /folder/ put file.csv EOF I'...
1
vote
1answer
620 views

CSF firewall in EC2

I am a developer who has very limited knowledge of server administration; I learn as I go and mainly deal with web servers. Is a firewall like CSF needed on something like EC2 given that AWS already ...
0
votes
2answers
514 views

Defending from random GET requests

I am getting attacked, and my site is constantly receiving thousands of requests like this GET /?HMPCL=INQUVOBHZ HTTP/1.1 I have mod-security installed, waf comodo and csf. Even mod-security blocks ...
1
vote
1answer
2k views

How to block a small IP range in csf

I'm looking for a way to block a small ip range in csf, e.g. 151.80.31.103 to 151.80.31.115 I know how to block each ip by issuing a cmmand csf -d IP, but it is a lot more effective to have a way to ...
5
votes
1answer
2k views

IP addresses denied in /etc/hosts.allow appear in /etc/csf/csf.deny?

I modify my /etc/hosts.allow file as sshd : 192.168.0.0/255.255.255.0 : allow sshd : xxx.xxx.xxx.* : allow sshd : ALL : deny (where the xxx represent my actual IP address numbers and the wildcard * ...
1
vote
0answers
202 views

CSF integrated UI stops working after few minutes

I have a Centos web server without any control panel like cPanel I've installed CSF/LFD and I've configured it to enable the integrated UI It was working fine using port 6666, but after few minutes ...
2
votes
1answer
323 views

Is it possible to open a CSF-LFD closed port without attaching an IP to it?

CSF-LFD blocks nearly all open ports. It also blocks port 10000 which I need. I can open the port via a similar code: cat << EOF >> /etc/csf/csf.conf tcp|in|d=10000|s=aa.bb.cc.dd EOF ...
0
votes
2answers
350 views

/usr/sbin/amavisd-new - why is pcmd/regex not working for this command in csf.pignore?

For some reason I cannot get CSF's LFD (/etc/csf/csf.pignore) to ignore amavisd-new running via perl. The daemon runs via /usr/bin/perl /usr/sbin/amavisd-new (some mode) however it seems that when I ...
1
vote
0answers
693 views

LFD is unable to download blocklist RBN, cannot remove it from config

I set up CSF on my cPanel installation to help manage the firewall and provide brute-force protection. One of the features of CSF (Actually LFD, which comes included) is the ability to block IP ...
0
votes
1answer
436 views

pptp gre in csf firewall

i have a senior problem. when i want to connecting a pptp over a tap adaptor or a pptp connection have get disconnected and get this errors on messages logs: linux pptpd[20275]: GRE: read(fd=7,buffer=...
1
vote
1answer
459 views

limiting ip range on openvpn server

We're trying to setup a openvpn server on centos 6. We have blocked all IP adresses except a couple in a whitelist via /etc/hosts.deny, also we did the same with csf.deny (except for the whitelist). ...
0
votes
1answer
200 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 ...
0
votes
1answer
268 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
2k 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
2answers
829 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 ...
1
vote
0answers
1k 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 ...
3
votes
1answer
3k 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
64 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
636 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
556 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
219 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
767 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
1k 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 ...
0
votes
1answer
587 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 ...
0
votes
1answer
337 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
868 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
1k 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 :::* ...
-3
votes
1answer
6k 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
2k 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
5k 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 ...
1
vote
1answer
877 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, ...