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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-3
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0answers
17 views

how to monitor user web activity on workgroup network? [closed]

I get a task to monitor one of staff, her web activities. our local network is based on workgroup, we have vigor 2830. I try to monitor on router but it's very difficult. I install smart monitor, not ...
2
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 ...
0
votes
1answer
13 views

Reliable UK/EU ICMP Targets for Periodic Routing/Connectivity Tests?

I need to test routing between my United States datacenters and United Kingdom and Mainland Europe ISPs. This is used to distinguish between general transcontinental routing issues and specific ...
1
vote
2answers
34 views

FreeBSD interface up/down monitoring

How to get informed about specific interface status in FreeBSD? ifconfig <ifname> | grep "status: active" works fine but I want to avoid polling and be informed as fast as possible about ...
1
vote
2answers
1k 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 - ...
0
votes
2answers
442 views

Monitorix Graphs Show Boxes Where Text Should Be

I have just installed Monitorix on ArchLinux using the tutorial here: wiki.archlinux.org/index.php/Monitorix I am using the Lighttpd web server. It is working fine and the graphs are being ...
0
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0answers
21 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 ...
13
votes
6answers
6k 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 ...
4
votes
5answers
5k views

Ping Equivalent For Checking If A Port Is Open

How do I check if a port is consistently alive? For example, I could use ping 192.168.1.1 -t > results.txt This will ping 192.168.1.1 continuously so that I could monitor it. Is there an ...
0
votes
1answer
16 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 ...
5
votes
1answer
3k views

Full status information in Nagios email notification?

I have set up Nagios to monitor my servers and I have written a few custion checks. When I get a notification email, I only get the first line of the status information and I have to use the web ...
1
vote
3answers
324 views

How to monitor 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 ...
4
votes
1answer
11k views

HP Procurve 5406ZL - How to enable port-mirroring?

How would you enable port mirroring for a HP Procurve 5406ZL? The configuration guide is not very clear in the mirror-port function. I know that I'll need to use the mirror-port [[ethernet] ...
1
vote
1answer
404 views

How to monitor network activity in openwrt

I'm having what feels like slow internet from time to time, with ping to google.com at 3000ms and up or even timeouts, and I'd like to check if the problem comes from the ISP or if it's from my ...
0
votes
1answer
45 views

On-the-fly decoding HTTP bodies on Linux?

My wish is to monitor HTTP exchanges between my server and a browser. At present time, I use the localhost because I'm developping the app. I installed and used tcpflow and found it quite useful but ...
0
votes
1answer
29 views

Are There any Web-Based Load-Balancing Managers? [closed]

I've setup load-balancing and clustering on a few linux systems for serving web and database content, and each time it's a fairly laborious process. So I'm wondering, are there any web-based ...
0
votes
1answer
42 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
0answers
51 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 ...
13
votes
5answers
26k views

Is there a way to get wireshark to capture packets sent from/to localhost on Windows?

Is there a way to get wireshark to capture packets sent from/to localhost? When I monitor traffic going from my computer to another, or from another computer to my computer, then it works. But ...
0
votes
2answers
113 views

How to log all inbound connections on Windows server

I need to log a summary of all inbound TCP connections on a Windows 2008R2 server, but only including the Source IP, Source Port, Destination IP and Destination Port. I do not want to log the payload ...
-2
votes
3answers
124 views

Is there a GUI tool to log and view outgoing CURL requests from a Linux server? [duplicate]

I've seen several similar questions - but none that truly answer the question. So here goes: PROBLEM: A script is being run on one of our servers that is making outgoing post (and other) requests ...
1
vote
1answer
84 views

How to set up an end-to-end SNMP data collection system to cloud?

Aim: We are creating a cloud server which will collect diagnostic data (like bytes exchanged, SNR) from remote SNMP enabled network devices (like Routers, Switches). The SNMP devices may be located ...
0
votes
3answers
69 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 ...
31
votes
5answers
47k views

How passively monitor for tcp packet loss? (Linux)

How can I passively monitor the packet loss on TCP connections to/from my machine? Basically, I'd like a tool that sits in the background and watches TCP ack/nak/re-transmits to generate a report on ...
12
votes
5answers
10k views

On Linux, how can I tell which process is sending Ethernet packets?

I'm running gkrellm which shows that some process on my Debian Linux system is writing approx 500KB/s to eth0. I'd like to find out which process it is. I know a little bit about netstat, but it ...
2
votes
0answers
51 views

Network sensor for a TCP connection for collecting statistics each second [closed]

I need a Network Sensor capable to gather basic end-to-end statistics (packet loss, jitter and network delay/RTT) of several TCP connections directed to the very same destination (ip-addr:port) on ...
18
votes
4answers
45k 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?
1
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2answers
2k 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 ...
2
votes
1answer
336 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 ...
5
votes
5answers
13k views

How to capture Wireshark packets when using a switched network in Windows

I’ve been asked by our SIP trunk provider to run a Wireshark trace on the network when we receive calls. The issue I’m having is that if I run Wireshark from a laptop plugged into the main switch I ...
5
votes
3answers
1k views

Network Sniffing and Hubs

This will likely seem naive to the experts... but it has been on my mind lately. For years I've been using ntop and a cheap 4 port hub to sniff client networks to determine who's doing what -- and ...
1
vote
1answer
99 views

Automatic Node Categorization not working in OpenNMS

I setup a Node Categorization policy in the foreign source definition ; its not working correctly what changes need to be done? Text version: (for bot/crawler) name SetNodeRouter class ...
0
votes
0answers
397 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
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0answers
18 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.
1
vote
2answers
174 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 ...
1
vote
1answer
610 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 ...
1
vote
0answers
44 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 ...
0
votes
0answers
62 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
54 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 ...
0
votes
0answers
108 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 ...
0
votes
0answers
145 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 ...
1
vote
1answer
484 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
votes
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
votes
2answers
507 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 ...
0
votes
1answer
366 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 ...
-3
votes
1answer
72 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?
0
votes
1answer
62 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
votes
1answer
80 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
votes
1answer
434 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 ...
1
vote
2answers
882 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 ...