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Unable recieve detail from source
Posted: Wed May 13, 2015 2:37 am
by lingweican
Hi all,
Currently i have nagiosNA setup in our system.
There one source until now still unable to receieve anything maybe due to different subnet?
Is anyone having this issue ?
Re: Unable recieve detail from source
Posted: Wed May 13, 2015 2:42 am
by Box293
Have you opened the ports on the NA server firewall (iptables) to allow the inbound traffic?
If the data is coming from a different subnet then it must traverse routers/firewalls, have you opened the ports to allow this traffic through to the NA server?
Re: Unable recieve detail from source
Posted: Wed May 20, 2015 10:04 pm
by lingweican
Is a different subnet. But is a direct connection. in the IPtables source anywhere destination anywhere 9920 is accept
sorry not good in linux
Re: Unable recieve detail from source
Posted: Wed May 20, 2015 10:38 pm
by Box293
Lets see if the traffic is hitting the NA server.
First install tcpdump:
Then run this command:
9920 is the port you have defined on your source in Network Analyzer AND on the sending device.
Re: Unable recieve detail from source
Posted: Thu May 21, 2015 1:22 am
by lingweican
i yum install already. but when i do the command tcpdump udp port 9920 it seem like struck there not moving at all.
Re: Unable recieve detail from source
Posted: Thu May 21, 2015 1:32 am
by Box293
lingweican wrote: but when i do the command tcpdump udp port 9920 it seem like struck there not moving at all.
Box293 wrote:If the data is coming from a different subnet then it must traverse routers/firewalls, have you opened the ports to allow this traffic through to the NA server?
lingweican wrote:Is a different subnet.
If it's in a different subnet, then it must pass through a router. Is that router allowing udp port 9920 from the source to reach the Network Analyzer server?