Describes the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator (via email, SMS or other alarms) in case of outages.

learn more… | top users | synonyms

3
votes
1answer
2k views

Detailed statistics using Ubiquiti UniFi hardware

I'm using UniFi manager to manage 10+ sites with 3-5 hotspots per site, and I look for more detailed statistics that the one offered by UniFi manager, such as: following an user through different ...
1
vote
1answer
20 views

How to analyze bytes transferred over a group of servers?

We have around 50 virtual machines. I installed collectd, graphite and grafana and we have some traffic statistics like these: That produces a graph like this: The lines are incoming and outgoing ...
1
vote
1answer
18 views

How do APM systems monitor and collect machine interactions?

So I generally understand how things like New Relic instrument a .NET app -- the CLR Profiler API makes perfect sense. But what I can't figure out is how things like AppDynamics understand ...
1
vote
1answer
68 views

Is it reasonable to use an external website as a health check

I have a 4 proxy servers spread across a couple of datacentres that serve a large number of users on a WAN. These are load balanced using an F5 GTM located at each site. My goal is to write a health ...
1
vote
1answer
1k views

Netflow to syslog converter

Is there any way to have netflow v9 converted to syslog? Which would be the best way to have the following idea working? Procedure: 1) The router sends UDP with the following structure: templateId=...
1
vote
1answer
313 views

Smokeping FTPtransfer probe

I'm trying to set up a SmokePing FTPtransfer graph but with no luck. I have the ping graphs all figured out but the FTP graph is just empty. Here is my Probes config: *** Probes *** + FPing binary =...
1
vote
1answer
351 views

What is the best way/tool to analyze raw data(network stats) from Simulation?

After running a simulation(using a simulator(QualNet)) of a simulated network I end up with ip stats stored in a database, I then extract the data to a csv file So now I have 750mb of raw network ...
1
vote
1answer
214 views

Analyzing a periodic network spike

One of my servers has a semi-predictable network input spike at 6:45 every day. It comes as early as 6:30 and as late as 6:50, but always lasts for less than 1 minute. I'm trying to figure out how to ...
1
vote
1answer
544 views

Ganglia network stats incorrect

I am using ubuntu 10.04LTS. The Ganglia on all of my nodes is not reporting the network usage correctly. There is a fairly large amount of fluctuation on the actual network, but on ganglia it seems ...
1
vote
1answer
165 views

Detecting a host doing a port sweep across multiple interfaces/networks

I'm trying to set up a honey-pot like machine that would detect port sweeps from multiple networks with multiple interfaces. As an illustration, if I could set up a box with eth1, eth2 and eth3. ...
1
vote
1answer
425 views

virtio /proc/net/dev

we are doing some VM (citrix-xen) / real machine benchmarks at university and ran accross a strange behavior. we used netperf's stream test to meassure the performance between the two machines. both ...
1
vote
1answer
381 views

HP Network Device Management Software

I look after a network with 11 x new HP v1910 24-port 1GB switches and 2 x HP 4204vl 1GB Chassis switches. I'm looking for software to enable me to: Map the network graphically - there are a lot of ...
1
vote
1answer
648 views

How to detect pid that generates outbound traffic on Solaris?

Is there a firewall of some sort on Solaris that will let me define a filter, for instance outbound traffic to a certain range of ip adresses and port, but instead of blocking the traffic I want to ...
1
vote
1answer
172 views

Monitoring network usage according to IP address in Wireless network

Hiii, I have an internet connection which is shared by 8 users via an D-Link N150 wireless router. It is 1Mbps connection and we want that no one should download in excess when everyone is using the ...
0
votes
1answer
25 views

Determine Which IP address is using the most throughput Juniper SRX 220

We have a Juniper SRX 220 firewall, and our ISP provides a readout of our total throughput for times of the day. There is a throughput spike fairly consistently during certain hours and we are trying ...
0
votes
1answer
19 views

How to implement PushMon on Ruby site

I am looking to implement PushMon on a number of sites using Ruby Padrino. I have the following piece of code from the PushMon site. Where would I place said code. I was thinking of adding it to the ...
0
votes
1answer
50 views

How to add drive space alert on IP monitor?

I am the administrator on a Windows server(GSNAPRINT) installed with IPmonitor tool. I want to add an drive space alert for another server (GSCTTLBACKUP) but was not successful. But there were other ...
0
votes
1answer
48 views

Measuring HTTP traffic basic on URIs and custom headers

I'm currently working on an API service and one of the requirements is that we measure the amount of data used by each user of the system, and track how many times they use the API. So bandwidth usage ...
0
votes
1answer
105 views

Reading .pcap files by CISCO ASA5515-X

I have .pcap file that already includes thousands of packets. I want to analyze these packets via CISCO ASA5515-X to observe how much of them are possible to be an attack packet (malicious). However, ...
0
votes
1answer
123 views

Only one server behind a switch cannot access the internet and vice versa

I have multiple servers deployed behind a single switch. All the servers have their own public IP addresses. Suddenly one of them (say A) cannot be accessed from the outside by any means, e.g. HTTP, ...
0
votes
1answer
657 views

add a cgroup controller into libvirt

libvirt by default has cgroup controllers of ["cpu", "devices", "memory", "blkio", "cpuacct"] as shown in qemu.conf. I want to add one more controller of net_cls. I tried to modify the config file to ...
0
votes
1answer
74 views

Developing an SNMP agent for linux

I'm developing a snmp agent for linux and I wonder if there is a directory or file proper protocol statistics snmp OIDs to develop snmpInPkts, snmpOutPkts, snmpInBadVersions, snmpInBadCommunityNames. ...
0
votes
1answer
819 views

Cisco Prime NCS not starting

I have received the Cisco Prime OVA file and which we placed onto an Oracle virtual environment. We turn the VM on and the CLI boots, When we try to start the NCS service we get errors. HOSTNAME/USER#...
0
votes
1answer
142 views

tshark duration of a conversation for a ip address

i can retrieve the follow info from a .pcap : ================================================================================ IPv4 Conversations Filter:ip.addr==1xx.1xx.0.1xx ...
0
votes
1answer
205 views

How to prevent particular program from using particular network connection under Windows?

In my company almost every user has 3G mobile connection and many of them travel a lot. To prevent expensive mobile charges I'm looking for a solution that would prevent particular program (Windows ...
0
votes
1answer
684 views

storing nagios configuration data in oneCMDB

I want to store my nagios configuration data into oneCMDB(configuration management database). What i trying to achieve is i will be developing a GUI app in which one can edit the configurations and ...
0
votes
1answer
517 views

Change source address on discovery of network devices in System Center Operations Manager 2012

My SCOM server has two network cards. One is normal network while the other is connected to the "switch" VLAN. If I try discovering network devices in SCOM I get "No Response Ping", no matter which ...
0
votes
1answer
87 views

Rails 2, authenticity tokens, and monitors

What is the best way to monitor a rails app that is behind a login page? We are currently using Zabbix for all of our monitoring needs, but based on this forum post it doesn't seem like it is ...
2
votes
0answers
188 views

How can I set ntop not to shorten host names?

With most screens in ntop, there is a list of hosts. Unfortunately, in almost every one, the host name is shorted, for some reason. When the host names follow the company standard, this results in the ...
1
vote
0answers
44 views

perl smokeping false packet loss (solved)

I'm getting false packet loss from time to time. The period lasts about month, you can see it on graph. We checked it using the same fping command and got no loss at all. So maybe were are hosts limit ...
1
vote
0answers
155 views

NagiosXI- Configuration verification failed

I am using check_ping command to check connection statistics of remote host. When I run the above command on command line, it gives me proper output, shown below: Syntax: /usr/local/nagios/libexec/...
1
vote
0answers
245 views

configure frag3 in SNORT

i m trying to test IDS systems on evasion. I have picked up Snort IDS. I have crafted few fragmented packet scenario, and i m sending those fragmented packet to destination address. All these crafted ...
1
vote
0answers
1k views

Collectd Network plugins didn't open listening port

I tried to send the monitoring data to my centralized collectd and found this error in the log [2013-08-09 07:04:22] bind: Cannot assign requested address [2013-08-09 07:04:22] network plugin: ...
1
vote
0answers
503 views

Multiple connections using multiple IP addresses to same PC

Background: I have a network management application (like Nagios or OpenNMS but not either one) under testing that requires all managed devices to have individual IP addresses ie. SNMP traps received ...
1
vote
0answers
125 views

How to monitor bandwidth on host which uses bridge-util and virtualization

I am running a debian squeeze box with bridge-util and LXC containers. I guess this is a 2 part request. I would like to know what my total bandwidth usage is I would like to see it broken down by ...
1
vote
0answers
353 views

Can nTop process sFlow data to reveal source and destination to be reviewed visually?

I tried rephrasing the question title about five times before arriving on this title. Does nTop have the "built-in facilities" to process sFlow data so that a graph of source and destination of ...
0
votes
0answers
20 views

monitoring if the ip is down (not up)

Is there a monitoring service that can notify if the IP that is normally down becomes reachable? So, the reverse of the usual stuff. I just need to check a few IPs, so bringing up a complete ...
0
votes
0answers
13 views

How reliable is /sys/class/net/eth0/statistics/rx_bytes for bandwidth statistics?

I found this script at https://github.com/Cosmologist/collectd-network-bandwidth-usage. <Plugin exec> Exec user "/tmp/exec-network-bandwidth-usage.sh" "eth0" </Plugin> It runs a ...
0
votes
0answers
22 views

vnstat and dstat report different totals

I'm trying to monitor bandwidth going through one of my interfaces, and I've discovered that dstat and vnstat both seem to report different rates... vnstat: [root@... ~]# vnstat -i eth8 -l ...
0
votes
0answers
47 views

How can i add switch in zabbix?

How can I add a host in zabbix ? like switch sf200-24p not support with SNMP. Note: the switch sf200-24 is support with LLDP protocol.
0
votes
0answers
23 views

Way to know what source is reading the most from MySQL Server(RDS)?

I have a mysql server which is registering very large bandwidth usage. I want to know what options I have for: Knowing what source is using the MySQL server most. (server ip?) What tables or queries ...
0
votes
0answers
63 views

Monitor network using bandwidthd without dedicated machine

I'm setting up bandwidthd in order to be able to monitor who's eating our monthly cap. Here's my bandwidthd.conf without the comments: subnet 192.168.1.0/24 dev "wlan0" promiscuous true ...
0
votes
0answers
818 views

Zabbix active check traffic

My conundrum is as follows... I have a Zabbix (2.2) server and agent up and running. The server does all kinds of passive check on the agent -- everything here is working as intended. The problem is ...
0
votes
0answers
66 views

iptables command to get bytes used by specific ip on port 443

I have hosted a WiFi network and i need to monitor data usage by every IP address on port 443(https) Here is the iptables rule used to share INTERNET from eth0 to wlan0 sudo iptables -t nat -A ...
0
votes
0answers
93 views

Trace IP traffic to physical machine under Linux

In my firewall logs I recently see frequent connection attempts from a 10.0.0.0/8 network. This network is used by VirtualBox, but I can exclude that these packets come from those. No physical machine ...
0
votes
0answers
151 views

Randomly lose the connection to router

I have been suffering with in this problem for a really long time and I'm running out of ideas. We have VMWare (Intel model server, Intel storage - Windows storage op. system, ). In the virtual ...
0
votes
0answers
381 views

Downloads of large files fail without an error

We run professional websites on IIS 6 and have complaints of (and have verified) that downloads (via HTTP) from remote locations (e.g. Australia) are incomplete or truncated. This means the download ...
0
votes
0answers
98 views

Hadoop - On the Wire Performance Monitoring?

I have been tasked with implementing an 'on the wire' monitoring solution for a large Hadoop installation. The source of data will be a combination of taps and SPANs throughout the environment. My ...
0
votes
0answers
347 views

Zabbix aggregate checks shows wrong statistics

Please, help with a Zabbix problem. I configured aggregate check, which should calculate the group load on outgoing eth0 for the whole group "Linux Servers" I have in Zabbix. Here is a screenshot of ...
0
votes
0answers
421 views

Tcpdump stops capturing wifi data while running in the background

I have a problem capturing wifi data using tcpdump while running in the background. OK, lets get some facts: my wifi-device is named wlan0 wlan0 is in monitor mode (that's what I want) I'm using ...