ConfigServer Community Forum

I flushed iptables with iptables --flush (don't do this if you don't know what it does!). Then I rebooted my system (Ubuntu 16.04). CSF started as expected, but I noticed the flushed /nonexistent firewall rules were still there after the reboot. I had to issue a csf -s in order to get my iptables rules reinstated. I was a little surprised by that, since I assumed that at boot, csf would start...

Hi,

I am using CSF on my cpanel server, i want to disable ICMP Timestamp Response as Trustwave is failing PCI DSS scan due to this, how do I achieve this via CSF, I disabled incoming ICMP but that has not solved this issue. Below is the description given by Trustwave about this:

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The ICMP protocol is used to support many administrative and maintenance messages on an IP network (the most...

Just a note that I ran into a problem with certain cluster members were not responding. I double checked their configurations and everything looked good. Restarting LFD wouldn't fix anything. When I ran csf --cping from the master node two of them reported no reply even though when I looked at their logs you could see lfd : Cluster member (CA/Canada/ ) said PING!

It turns out that they were a...

I've been managing CSF as a plug-in in Cpanel WHM. If Cpanel expires, how to I continue to access the CSF Web Interface? Are there any changes I need to make to the config?

Hello,

I'm having a serious issue where each time I restart my server, the ports I added manually to CSF are forgotten... This always causes issues...

Any idea what's going on with this? Is there a workaround I can do in the meanwhile?

i use csf v7.07.
i got a lot of processes like these:
root 9164 0.0 0.0 101236 4084 ? Ss Aug01 0:00 sshd: root
sshd 9165 0.0 0.0 67992 1652 ? S Aug01 0:00 sshd: root
root 10412 0.0 0.0 101104 3796 ? Ss Aug02 0:00 sshd: unknown
sshd 10414 0.0 0.0 67992 1740 ? S Aug02 0:00 sshd: unknown
root 10439 0.0 0.0 101236 4088 ? Ss Aug03 0:00 sshd: root
sshd 10440 0.0 0.0 67992 1656 ? S Aug03 0:00...

in cPanel server the apache log located on /usr/local/apache/logs/access_log which is missing in csf.syslogs

Hello,

I'm trying to put the following code into the csf.pignore.

This are the lines:

Executable:
/usr/bin/perl

Command Line (often faked in exploits):
monitorix-httpd listening on 4711

Network connections by the process (if any):

How to add this line to csf.pignore to deactivate that message?

I tried the following:
pcmd:/usr/bin/perl monitorix-httpd listening on 4711

and...

After updating CSF to v7.0.3, i get error in DirectAdmin Control Panel/CSF: Permission denied .

Reinstall of CSF is the simple solution, but not the best.
Is there a good solution? Changing file or folder permissions for example?

Reinstall firewall gives opportunity for hacking..because:
1. No firewall is not good at all.
2. There is a few minutes time to hack your server. (FAST_START solves...

I have a client who has some mysterious old e-mail reference somewhere on their devices or on my server that is continuously looking for mail and being denied access and they keep getting blocked whenever their ip address changes as they travel.

Is it possible to configure CSF to ignore any time mysteryaddress@domain.com tries to connect for mail from any ip?

I normally do not like turning up...

Ive just setup a new server and configured a HE IPv6 tunnel, and all outbound traffic is being blocked by CSF, even though I have all ports allowed on outbound.

# Allow outgoing TCP ports
TCP6_OUT = 0:65535

# Allow outgoing UDP ports
# To allow outgoing traceroute add 33434:33523 to this list
UDP6_OUT = 0:65535

I've added the tunnel server ipv4 address to csf.allow and can ping other ipv6...

Hello, We have been recently getting alerts for 0.0.0.0 (-/-/-) blocked with too many connections . This appears to be triggered by our CT_LIMIT=500 setting. suggests 0.0.0.0 is a meta IP for all system IP addresses, however, why would CSF block it's own systems IP addresses? The concern is should this be blocked and is there any adverse effect? Is there any action we should take?

Thank you.

Hi,

I found that one entry in csf.blocklists (RBN) returns a 404 and I figured I'd disable the list. I even found some alternative rules by emerging threats.
The problem is that whenever I edit csf.blocklists, either using the WHM interface or via SSH, it seems to work at first and then after some time it just resets again. I can't comment out the line either.

Is there anything I'm doing wrong...

One of our customers is having issues with a remote MX, so my plan was to block it on CSF, but every once in a while it gets cleared out due to the IP limit of the deny table.

How can I block that IP forever?

Also, is there a way to block domains using dyndns instead of just allowing them thru?

We're trying to build a Centos Gateway for our cloud host server. This is actually easier than I first thought with iptables using the following command to set-up NAT masquerading:
/sbin/iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE
Having already set-up IP Forwarding, this command pretty much allows the guests to use the Centos Gateway to connect to the Internet...

Anyone else seeing a dramatic increase in ftp attacks on their servers from RU, KZ, UA, BR and BY over the past 24 hours. Typically the firewall blocks 4-5 IP's a day. In the past 24 hours it has thrown permanent blocks up over 800 different IP's from these countries on various servers I run.

Got to the point that I just ended up blocking the CC's.

Just curious if it was just me.

I have CC_DENY = a few countries which are notorious for malicious traffic. However, I have clients who deal in these countries and their mail is interrupted by these rules. I have been manually adding the mailserver IPs, however, is there a working solution for allowing SMTP traffic through these rules?
Thanks

Hi,
One of my servers suffered a network blow dealt by a datacenter problem. Crashed several database tables, other assorted things.

In the WHM area when I click on the CSF link in the bottom left instead of the full interface I just get the icon and the header image in the right pane.
The firewall is working, I know because I blocked myself and had to log in to one of my other servers and flush...

Hi Everyone,

I am trying to build a New Debian 8 (Jessie) Apache2 Server for a project. I would like to secure the Server as much as possible to keep risks level to a minimum, So far, I was able to install everything after several days of trial and error. Right now, I am at the Security level of my project and ran into some difficulties getting the Firewall to allow access to a few key...

Dear all

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 the UI not working at all

And I have to reboot the whole server to let the UI works again, but after minutes the UI doesn't work again

while the UI is working, I found this line in the...