Monitoring UDP

Nagios
1

hello

One question here.
Can i monitor UDP using Nagios.Both incoming and outgoing traffic can be monitored??

Thanks
Aparna

2

Hello
When i give check_udp -H HOSTADDRESS i get the error as

Receive failed
No response from host on port 0

Let me knw if anyone of you can help me
Thanks
Aparna

3

Hello
sory one more quesion.
my problem is that from my server there are udp attacks being made.What i wanna do is monitor these udp attacks.
so can nagios help me out doing this.
is there a way for it

Your help will be appreciated.

Thanks
Aparna

4

Nagios is not a traffic monitoring tool.
Check out sourceforge.net/projects/bandwidthd/ or some IDS (intrusion detection system)
Nagios is really not what you need for this.

Luca

5

Hi
Thanks.
but about check_udp plugin .i mean if i have to use it then how do i?i get the above errors.

Thanks for ur help
AParna

6

From check_udp --help

This plugin will attempt to connect to the specified port on the host.
Successful connects return STATE_OK, refusals and timeouts return
STATE_CRITICAL, other errors return STATE_UNKNOWN

As luca said I think you need an intrusion detection system. You could download the NST (networksecuritytoolkit.org/nst/index.html) which is a bootable linux distro with loads of open source network tools already set up. SNORT or NTOP might be a good place to start. Because everything is already setup within the distro it’s really easy to trial bits of open source networking software.