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.

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12 views

GigaVUE-420 ERROR: failed in probing PCI device [on hold]

A unit that was picked up was booting to the RedBoot prompt, but I was able to get it to load the image now I am getting the below message on bootup, and then it hangs. +eth0 mgmt port: NO LINK No ...
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0answers
14 views

Icinga 2 vs Nagios 4 vs Shinken 2 : is there Performance Benchmarking comparison available?

I am not able to find out any link that displays the benchmarking report for the cores. We have to monitor 50,000 hosts and 30 services per host per minute host check : icmp per 5 minute service ...
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1answer
163 views

Monitor network statistics with vnstat on CoreOS?

I notice that vnstat isn't installed on CoreOS. Is there a comparable way to monitor network usage on a CoreOS cluster? Certainly one could run vnstat through a Docker container but I assume that ...
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3answers
25 views

Use Nagios to monitor 2 locations

As I am new to Nagios, I would like to ask if anyone knows how to monitor 2 physical locations using Nagios. So for example, we are having 2 datacenters which are interconnected. I have set-up a ...
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0answers
32 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 ...
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1answer
1k 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 ...
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0answers
7 views

How to make TCPFlow to not store package body?

Is it possible to configure tcpflow to store only package headers without package body? My log simply explodes in production.
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2answers
99 views

Count number of DNS (bind9) clients?

I need to know the number of my DNS server clients. Probably it means unique IP's per day, or something, because i think there is no other way to identify clients in other way. So, i need to know how ...
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5answers
5k views

Solution to route/proxy SNMP Traps (or Netflow, generic UDP, etc) for network monitoring?

I'm implementing a network monitoring solution for a very large network (approximately 5000 network devices). We'd like to have all devices on our network send SNMP traps to a single box (technically ...
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1answer
545 views

Implementing Argus (similar to netflow) what kind of information should I be gathering?

I am setting up a trial of Argus at my company as a diagnostic tool. We have a collector box attached to a monitoring port on our switch, and the initial plan is to redirect ports with unusual traffic ...
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0answers
25 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 ...
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0answers
44 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 ...
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31 views

Find any/first alive host in subnet

I'm trying to find a quick way to check if there are ANY alive hosts in an IP range by pinging them. eg: i don't need to know what hosts are alive, just if one or more is responding to a ping. This ...
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0answers
24 views

Snort sniffing WPA1/2 protected network with mon0 (=wlan0; set into monitor-mode)?

How do I configure Snort to sniff a WPA2-protected network using mon0 (= wlan0; set into monitor-mode). Of course, I have the SSID, the WPA-PSK and channel of the wifi-network I want to monitor with ...
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0answers
32 views

IPtraf doesn't work with venet devices

I've got a VPS with Debian 7 Wheezy 64 bit. I installed the tool iptraf to monitor the network usage, but it seems that it doesn't work whit the device type "venet". So i lunched the command with the ...
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1answer
330 views

How to have PRTG Server running beside Apache? [duplicate]

We used to work with a local Apache instance (WAMP) as a development environment, but we installed recently a PRTG server on the same machine, so it listens to the same port, as it is a web-based ...
6
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4answers
2k views

Open source DCIM stack?

Our 500-server data center is growing quickly and my manager has started investigating using a specialized Data Center Infrastructure Management (DCIM) package to help manage constraints. DCIM ...
2
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2answers
148 views

Monitor network traffic/usage by PORT

I apologize in advance if this is out of topic. I am currently using Icinga and Cacti to monitor machines and the network respectively. While I have no big issues with this setup, I would really like ...
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1answer
121 views

How do I bond eth0 to failover to wlan0 after WAN connection loss?

I would like to have my monitoring box (Zenoss) notify me when the network upstream of me goes down without an actual link loss. I have had some issues with our CoLo's switches going down, but I ...
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1answer
35 views

What does unknown connection state mean [closed]

When using a port monitor, I noticed that the states of some of the connections where categorized as "unknown". What does this mean?
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1answer
30 views

Keep showing old processes in nethogs

Nethogs stops showing idle processes after a while. How can I make it keep showing them? I want to have a complete history of processes for long time. Is there any alternative to nethogs?
2
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1answer
71 views

Correlating network issues with severe weather?

Our helpdesk is noticing that many network issues are associated with medium to sever weather at some of our regional locations. Now this has been escalated to L3, I do see a correlation between ...
6
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1answer
203 views

Devices with MAC's manufacturer section “00:FF:01”?

While monitoring my office's network, I have seen a huge amount of traffic coming from devices whose MAC address manufacturer part (the three most significant octets) is 00:FF:01 I can't see the ...
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0answers
105 views

Slow Tableau server performance in a datacentre

I'm installing Tableau Server 8.3 in our hosted datacenter and experiencing strange behavior. When I run a workbook on my ( average) laptop (8GB, 4 cores, SSD) in Tableau client, it runs in about 10 ...
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0answers
190 views

iptables on AWS - how to get traffic mirroring to work?

Has anyone successfully deployed 'iptables -t mangle -j TEE...' for monitoring traffic on AWS instances? If so, how? My objective is for client<->server traffic between external customers and EC2 ...
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2answers
738 views

OSS Server Monitoring Software — Which is right for me? [duplicate]

I'm trying to plot the course for my organization and am currently looking at (not exclusively so, but so far research leads to these): Zenoss Nagios OpenNMS Our requirements is that this must be ...
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0answers
59 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 ...
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2answers
99 views

Monitor server / website load of bandwith

I've been doing a lot of searching around for a tool to monitor a website's "bandwidth" usage, and I'm not talking about how many MB/data is being loaded but the servers actual output speed, to ...
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1answer
183 views

Monitoring “external” worm activity remotely

Some of our computers in our company has been infected with the worm Conficker. We don't know the source of the infection, but I want to monitoring the outside activity to see if we are still infected ...
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2answers
801 views

Using runit and monit to run / monitor services

I am configuring some services to run on Ubuntu server. I was going through the link below where they use runit to run the services and monit to monitor the services - ...
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2answers
2k views

How Fortigate 100D send log to Splunk

I have a Fortigate 100D with FortiOS 5.06 , this is my setting config log syslogd setting set status enable set server “192.168.7.4″ set reliable disable set port 515 set csv disable set facility ...
0
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2answers
188 views

Is there any software to monitor bandwidth?

In our organization we have 3 servers that are located at the office and around 20 pc accessing the servers in the warehouse with distance between the pc and the server around 20 km (13 miles). Our ...
2
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1answer
979 views

SonicWall TZ 200 Network bandwidth or usage monitoring

I was using Pfsense for a while and recently replaced it with SonicWall TZ200. What I miss now is a Bandwidth or usage monitoring like BandwidthD to monitor IP wise traffic. How can I do this ...
0
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1answer
93 views

nmap repeats the scan to a specific port multiple time

I scanned a subnet (16 hosts) while dumping the network traffic with wireshark. I did it 2 times and I noticed that in the traffic there is the normal SYN-SYN/ACK and SYN-RST from open/closed port, ...
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3answers
2k views

OpenBSD has open ports in default installation

I have been considering replacing Ubuntu with OpenBSD to improve the security on my local server. I need to have ssh access to it, and I also need it to serve static web content - so the only ports I ...
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0answers
101 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
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1answer
182 views

How to monitor socket connection usage and exhaustion on a server?

I have a service endpoint (java) that will be getting bursts of thousands of requests per second. In my load testing I had to tweak the server because I would run out of open sockets as there were ...
0
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1answer
248 views

Show units when doing dstat -n

Question is simple as, when i do dstat -n i get what I assume to be a unit in bytes? But i would like a way to force the units into Mb/s or for it to simply tell me the unit it is displaying. Is there ...
0
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1answer
64 views

How to monitor if someone is using wireshark in my corporate network

I would like to know if it's possible to monitor if any users are using a network sniffer like Wireshark in my corporate network?.
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3answers
1k views

Debian Squeeze - Monitor outgoing traffic

I have a small webserver that running on Lighttpd 1.4 which steadily uses 250GB or less bandwidth for the past couple of months. But since May the traffic spikeed to more than triple of what it was. ...
0
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1answer
39 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 ...
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0answers
188 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 ...
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2answers
39 views

OpenNMS installation failure

I am willing to use OpenNMS to monitor my network. Monitoring it fully from the router to the nodes from a computer will be connecting the network as node not as administrator and that computer using ...
1
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3answers
139 views

network usage per user in linux [duplicate]

I am administrator of an openSUSE linux server which is used by many people in our company. Today we find out that yesterday one of the users use too much of bandwidth and its important for management ...
1
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1answer
574 views

Resetting to factory default on a Gigamon GigaVUE-212

I purchased the above-mentioned GigaVUE-212 for my test lab from eBay, to determine if I want to use them in production. However, the thing doesn't respond to the default passwords, and I can't ...
0
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5answers
3k views

How can I monitor network performance in Linux? [closed]

I am managing a network with a Linux server (CentOS 5.4) and Windows XP Clients. Recently I have become concerned about network performance and would like to begin monitoring it. Is it possible to ...
-1
votes
1answer
80 views

how to log bandwidth usage on windows 8 [closed]

My Father has a Verizon jet pack (hotspot card). He is seeing 100+ MB spikes on the Verizon data usage report a few times a day. On July 4th the verizon data usage report online shows 6 GB were ...
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1answer
53 views

Keeping your server safe [closed]

I have a typical vps server with some custom sites on it running on port 80, a mail server, I don't have a DNS server and it is a default ubuntu 12.04. I don't have any admin panel, I am doing all the ...
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votes
1answer
153 views

service to check if exchange is sending receiving email? [closed]

I need of a web service that check if my exchange is sending receiving email properly. And if there are some problem it sends a sms to my cellular. I don't want an app because I have not a smartphone. ...
14
votes
3answers
30k views

How can I filter https when monitoring traffic with Wireshark?

I want to observe the HTTPs protocol. How can I use a Wireshark filter to do that?