ConfigServer Community Forum

Hello,
I am working on a new install of csf. I am getting traffic blocked even in test mode. This is on a VPS in hostgator centos 6.9
WHM 66
Aug 23 10:08:14 bam kernel: Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC=fa:16:3e:89:99:17:00:1c:73:63:e5:9b:08:00 SRC=XXXXXX DST=XXXXX LEN=60 TOS=0x00 PREC=0x00 TTL=48 ID=15024 DF PROTO=TCP SPT=9441 DPT=80 WINDOW=55520 RES=0x00 SYN URGP=0

in...

Hi,

I'm struggling to get the recaptcha working on my server and was wondering if anyone could help?

I've disabled Domain Name Validation as mentioned in the docs and the key

Redacted

Hello CSF Team :),
At the time of this writing, I am using CSF v10.22

I have installed CSF on my cPanel servers and all of them are up to date with the current version.

Today I was testing and installing docker containers on one of my cPanel servers, and all was working well. The docker container was loading perfectly on http:// :45566

I then had to add one of my IP address to the whitelist...

Hello,

I have the following case here with my CSF. It is able to find a suspicious and excessive processes running on the server, but it does not kill/stop them. For example :

Time: Mon Aug 7 10:13:26 2017 +0300
Account: username
Process Count: 20 (Not killed)

Process Information:

User:username PID:3806 PPID:3343 Run Time:2469(secs) Memory:482564(kb) RSS:55036(kb)...

Hello

LF_MODSEC Stopped Working on All of My Servers with Apache 2.2

Can You Help Fix This ?

But Work Fine on Servers With Apache 2.4

I have 20 Linux servers hosted in the cloud. I installed CSF on all them, I want SSH to be accessible specifically on our office Internet IP so that it won't be accessible somewhere else. Is this possible? If it is, how do i set it on my CSF Conf.

Thanks

I am trying to get the following to work under one rule:
Jun 19 09:36:02 SERVER wp(SITE) : Authentication attempt for unknown user Admin from IP
Jun 20 19:03:38 SERVER wp(SITE) : XML-RPC authentication failure from IP
Jun 20 08:13:55 SERVER wp(SITE) : Authentication failure for admin from IP
Jun 21 14:49:46 SERVER wordpress(SITE) : XML-RPC authentication failure for admin from IP
Jun 21 14:49:48...

So there's basically three hack attempt strategies on my server I'd like to just stop.

SSH login - I know IPs get blacklisted after 5 failed attempts within x minutes, but I only SSH in from a handful of IPs. There's a chance some of these IPs will lose their DHCP reservation and change, but I have at least one static IP. So I assume best solution is to remove port 22 from the allowed ports and...

Hi

I'm using a modsec rule to detect and block joomla and wordpress bruteforce attack. This is working well, but I would like to block also the IP with CSF. Therefore I set LF_MODSEC=3, but it doesnt work. I'm using cpanel and in /usr/local/apache/logs/error_log it looks like this:

ModSecurity: Access denied with code 401 (phase 2). Operator GT matched 0 at IP:bf_block.
ModSecurity: Access...

We are facing the email issue under one domain and we are trying to trigger the mails via gmail.We are getting the below error as,

Mail delivery failed via SMTP server 'smtp.gmail.com'.
SMTPAuthenticationError: 535
Incorrect authentication data

(or)

Unable to access account

After restarting the server firewall mails are working fine.We have also checked each and every logs but we couldn't...

Dear all,

I am note sure if anyone have issue with MTU after the new version of CSF?
If i active csf by command csf -e, and if i use MTU website to check the IP MTU, it drops to 1496.
But if i instantly disable it by csf -x., It goes back to 1500.
This MTU problem affects my server connection.

I am able to solve this problem by disableing the packet filter on one of my cpanel server, but not...

First off, I am not sure where to post this questions so I do apologize if this is in the wrong forum.

I been using Gmail to receive my emails from all my websites for a few years now.
Couple days ago I noticed that I didn't receive any emails so I checked settings in Gmail and saw Connection Error. Mail from this account has not been retrieved since Apr 2 for all of my email accounts. I then...

Hello,

I´ve just installed csf on my WHM Server, and was wondering how many ips can I limit on the filed DENY_IP_LIMIT so it doesn´t consumes too many memory.

Thanks in advance

bug with file /etc/csf/csfpre.sh

I used file /etc/csf/csfpre.sh for some instructions for iptables. But near one in 3 days additional instructions was vanished from output of command iptables-save . If I restart csf -r additional instructions return in output of command iptables-save . Is it bug?

Hi Guys,

I',m running centos 7 and directadmin with csf.
I cannot seem to get mysql-safe excluded.
The following message keeps comming:

Time: Thu Jul 27 09:27:10 2017 +0200
Account: mysql
Resource: Process Time
Exceeded: 2201401 > 1800 (seconds)
Executable: /usr/bin/bash
Command Line: /bin/sh /usr/bin/mysqld_safe --basedir=/usr
PID: 946 (Parent PID:946)
Killed: No

In csf.pignore I've added the...

Dear professionals I need your help.
How to security solve this task?
One of my clients need to send e-mail from web form. He uses smtp.office365.com.
If I add nobody to SMTP_ALLOWUSER, he can do what he wants.

No I wander if is't ok to add nobody to SMTP_ALLOWUSER?

Wasn't it better to allow connection to smtp.office365.com?
If yes, how to add host name (instead of IP) into allow list?

Recently installed (2/3 days ago) CSF on Ununtu 16.04.

I can log into the UI. However it will randomly stop responding. The web page comes up as not responding and I have to restart lfd I order to be able to log in again. As far as I can tell the services are running it's just the UI not working.

Before I log in successfully the process lfd UI is running. Once the webpage stops working the...

You can only whitelist by IP.

Hello,

I have CSF installed and updated to version 9.26 on a Centos VPS. Currently my CSF status Firewall Status is Enabled but Stopped. When I try to start the Firewall, I get the error iptables: Memory allocation problem and Error: FASTSTART: (TCP_IN IPv4) [] . Try restarting csf with FASTSTART disabled, at line 4904

I am new to using CSF and do not understand how to resolve this issue in...