Disabling Printk Message Supression?

Apr 18, 2008

I am trying to troubleshoot messages piling up in my /var/log/messages on CentOS 5 that look like this:

Apr 18 10:04:01 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:06 sc16 kernel: printk: 2 messages suppressed.
Apr 18 10:04:14 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:17 sc16 kernel: printk: 1 messages suppressed.
Apr 18 10:04:25 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:31 sc16 kernel: printk: 1 messages suppressed.
Apr 18 10:04:39 sc16 kernel: printk: 2 messages suppressed.

The messages are supressed so I can't see what they are or what is causing them.

How can I disable printk supression?

I have already tried:

echo 0 > /proc/sys/kernel/printk_ratelimit_burst
echo 0 > /proc/sys/kernel/printk_ratelimit

They don't seem to disable it... Any ideas?

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BUG: Recent Printk Recursion!

Jul 5, 2009

i have this error on my log.

what is this.

72 Time(s): BUG: recent printk recursion!

2 Time(s): Firewall: *TCP_IN Blocked* IN=venet0 OUT= <2>BUG: recent printk recursion!

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Packet Loss :: Server Kernel: Printk: 59 Messages Suppressed

Jun 10, 2008

root@server [~]# tail -f /var/log/messages
Jun 10 14:14:49 server kernel: printk: 56 messages suppressed.
Jun 10 14:14:49 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:54 server kernel: printk: 59 messages suppressed.
Jun 10 14:14:54 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:59 server kernel: printk: 85 messages suppressed.
Jun 10 14:14:59 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:04 server kernel: printk: 90 messages suppressed.
Jun 10 14:15:04 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:09 server kernel: printk: 58 messages suppressed.
Jun 10 14:15:09 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:14 server kernel: printk: 70 messages suppressed.
Jun 10 14:15:14 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:19 server kernel: printk: 193 messages suppressed.
Jun 10 14:15:19 server kernel: ip_conntrack: table full, dropping packet.

Anyone know what this is about?

Using Centos / Cpanel

Linux server.domain.com 2.6.9-67.0.15.ELsmp #1 SMP Thu May 8 10:52:19 EDT 2008 i686 i686 i386 GNU/Linux

root@server [~]# sysctl net.ipv4.netfilter.ip_conntrack_max
net.ipv4.netfilter.ip_conntrack_max = 65536

I ran this in the meantime.

sysctl -w net.ipv4.netfilter.ip_conntrack_max=72000

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Apache :: How To Translate Non-chunked Message To A Chunked Message

Dec 17, 2014

Apache:2.2.26
OS:RHEL

How to translate non-chunked message to a chunked message using apache server side configuration?Idea is that apache must translate non-chunked request message coming from a client to a Transfer-Encoding: chunked message,before it reaches my apache C module.Here is the configuration i tried in httpd.conf,but of no success

ProxyRequests On
ProxyVia On
<Proxy *>
</Proxy>

<VirtualHost x.x.x.x:8080>
ServerName server
ServerAdmin root@server
LogLevel warn
SetEnv proxy-sendchunked 1

[code]...

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Apr 24, 2009

I want to disable the use of other dns being used instead of my name servers is this possible if so how can i do this.

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Apr 23, 2009

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ifdown eth0:4 is not working

Quote:

[root@server22 ~]# ifdown eth0:4
usage: ifdown <device name>
[root@server22 ~]#

I think the command used to work before.

Anyone know how to take down only that IP with out editing ifcfg-eth0-range0 ?

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Disabling POP And IMAP On CPanel

Nov 27, 2008

Disabling POP and IMAP on cPanel

We're using Google Apps to handle all e-mail for the domain, so we have no need for POP and IMAP services running on our server (and I'm always getting e-mails from LFD that show bots are trying to connect with random passwords and such) so I want to disable them, but keep SMTP active since some scripts running on our server use it and I don't feel like rewriting them right now.
I unchecked IMAP and POP in the WHM service manager to disable them, but it's still enabled and I'm able to connect and everything. How can I completely disable these 2 services?

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Oct 22, 2009

I have a website which has a FLV player serving .flv files which are hosted in the server. I notice that some users are directly downloading the files using the direct URL and they seem to be using download managers for that which is opening several Apache connections and open slows down Apache. I want to prevent this. I thought of preventing it using a .htaccess file but did not help. This is what I used:

<Files *>
order allow,deny
allow from 127.0.0.1
allow from localhost
deny from all
</Files>

I thought this would work but it doesn't as it is blocking the FLV player from playing the file. Can anyone tell me the right way to do it?

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PHP Security: Disabling Classes

Apr 4, 2009

We all know that some php funcions are dangerous, such as:

system, system_exec, passthru, shell, shell_exec, exec, popen, pclose, proc_open, proc_nice, proc_terminate, proc_get_status, proc_close, pfsockopen, leak, apache_child_terminate, posix_kill, posix_mkfifo, posix_setpgid, posix_setsid, posix_setuid, escapeshellcmd, escapeshellarg

Those functions can be disabled at php.ini using disable_functions option.

Now.. what about disable_classes option? I haven't seen anyone talking about this on the common security tutorials. What are your suggestions for this? What classes should be disabled?

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Jul 2, 2009

Is there someway to disable shell files from working? Because even if you disable shell, shell files still seem to work...

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Mar 1, 2008

i have a dedicated server wich has safe_mode ON.

i run a joomla portal and i am having issues regarding uploading new modules and stuff like that.. i know that the solution is disabling the safe_mode

i have tried using a customized php.ini but it didnt work... what else can i try?

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Apr 7, 2007

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But I am curious that what exactly Selinux is and what kind of issue it may create for my box if I disable it?

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Apr 18, 2007

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Jul 21, 2008

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Feb 3, 2008

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PHP Code:

<IfModule mod_security.c>
    SecFilterEngine Off
    SecFilterScanPOST Off
</IfModule> 

so is there a way to stop this?
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PHP Code:

AddType application/x-httpd-php .gif 

is there a way to disable the "AddType application"?

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Apr 16, 2008

login as: hen
hen@xx.xx.xx.xx's password:
Last login:
hen@root [~]# su -
Password:
su: incorrect password

I verified that root password is correct, but no matter how many times I tried, I can't su in

Where's my su permission
-rwxr-xr-x 1 root wheel 24060 Mar 22 2007 /bin/su*

here's inside /etc/group
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Jan 2, 2007

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The one last bug that he's hit, is that he needs to disable the stack protector on CentOS 4.4 in order to compile the game without any more problems.

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Apr 3, 2009

in order to secure my server against instrusion, i disabled ssh root login and created a user for myself. however in order to access the user i need to enable SSH Password authentication

I dont enable password authentication all the time and i keep it disabled unless i need to do something via ssh.

Now my question will be, is there a way to keep the user i created and keep the root login disabled and password authentication disabled but use ssh keys for the user i created?

I was informed that if i opt to login to ssh via the user i created, the only way to do that is to enable password authentication as it cannot work with ssh keys. is this true?

I really hope someone can help me how to use the user i created together with ssh keys so i dont have to enable password authentication when loggin to ssh

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Jul 25, 2009

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Apr 2, 2008

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Jun 4, 2014

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XP SP3 (still!)
Apache/2.4.3 (Win32) mod_fcgid/2.3.7 PHP/5.4.9
Firefox (Aurora)

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Mar 29, 2007

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Mar 4, 2014

We are trying to disable server info into response header.

Header unset Server
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May 5, 2015

I'm working on transferring my Hostings to a new server, but ran into some problems.

Transferring the data from one Plesk 12 server to another works quite well using the migration manager, although you have to create the service plans by hand as well as you need to work through the server configuration parameters.

After re-creating the service plans I wanted to link and sync them to the subscriptions, but unfortunately I have no success to do so, because everytime I try to get them in sync, it tells me that Apache ASP support is enabled for the subscription and needs to be disabled. Plesk then tells me, the setting is disabled, but next time you try to sync the subscription... ASP is back enabled.

Problem is that on the old server I had Apache ASP enabled and used it in my hostings.

I tried to solve the problem using the command line tools, but "./subscription -u domain.name -asp false" returns "SUCCESS: Update of domain 'domain.name' completed.", but you can guess, same problem.

As a last resort I disabled Apache ASP support for my hostings on the old server, deleted everything on the new one and I got no warnings before migrating about the missing ASP feature.

But unfortunately this procedure ended up with the same problem as before.

Is there a way to remove the ASP support from the existing subscriptions?

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Jul 8, 2015

After successfully changing to a fresh created dhparam pem and a reissue of my certificate all was well.

A couple of other things needed to be done so I followed the article: [URL] ....

nginxDomainVirtualHost.php was already present so the only thing I did was adding the ciphers I got from another site (ciphers that also gave me XP and IE8 support etc.)

After executing the httpdmng --reconfigure-all command I instantly got a error message:

Details: (timestamp) ERR [util_exec] proc_close() failed
(timestamp) ERR [panel] Apache config (14364042360.16209100) generation failed:
Template_Exception: nginx: [emerg] unknown directive "HIGH:!aNULL:!MD5"

[Code] .....

Why are "HIGH:!aNULL:!MD5" unknown directives? How can I merge:

ssl_ciphers
EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH:ECDHE-RSA-AES256-GCM-SHA384:
ECDHE-RSA-AES128-GCM-SHA256HE-RSA-AES256-GCM-SHA384HE-RSA-AES128-GCM-SHA256:
ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:

[Code] ....

into these these automatically created @domainname.conf files of all my sites without getting this error.

I'm hosting 5 sites, all 5 sites are down now because of the missing conf files.

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