[squid-users] kernel: NET: 567 messages suppressed

From: Muhammad Junaid <junaid@dont-contact.us>
Date: Tue, 25 Feb 2003 13:59:34 +0500 (PKT)

Hi,

 

I am getting following messages in my /var/log/messages. Not continuous
but often.
 

kernel: NET: 555 messages suppressed.
kernel: NET: 556 messages suppressed.
kernel: NET: 546 messages suppressed.
kernel: NET: 557 messages suppressed.
 

I have RedHat 7.3 with Kernel 2.4.18 and running squid 2.5 (Transparent).
I have Traced back to its source in /usr/src/linux-2.4/net/core/utils.c
and found
 

* This enforces a rate limit: not more than one kernel message
 * every 5secs to make a denial-of-service attack impossible.

....
               if (lost)

                        printk(KERN_WARNING "NET: %d messages
suppressed.\n", lost);

                return 1;
...

Is the kernel taking many concurrent requests as DOS attack and
suppressing the requests. Can any one help how this can be resolved?
Thanks in advance.

 

Muhammad Junaid

CIS, Pak.

 
Received on Tue Feb 25 2003 - 01:58:24 MST

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