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

2
votes
2answers
293 views

What to use to get meaningful network statistics

A customer has a rack with some 1U servers and Dell™ PowerConnect™ 2716 switch at ISP's server room. One port is uplink to the ISP. Some servers run ESX5 while one 1U server is a plain Windows 2008 R2 ...
4
votes
2answers
2k views

Monitor Internet bandwidth by IP in a LAN environment?

I am new to networking so pardon if this is a stupid question. I want to see how my users use the internet bandwidth. I have around 50 Users in the network and I am using a checkpoint edge series ...
-1
votes
1answer
82 views

How can I get the total “INTERNET” usage (in MB) using Microsoft Netmonitor or any other tool

I tried with Microsoft Netmonitor, but I don't know which column has to be added to get the Total usage (in MB). I also want to know about what filter have to be applied to get only the INTERNET ...
0
votes
1answer
56 views

Tracking data sent to remote host over time?

What is a a good way to track over time the amount of data transferred from my Linux server to another host on the internet? https and imaps only
0
votes
1answer
368 views

tell tcpdump to not include the port numbers in the output

how can tell tcpdump to not include the port numbers in the output? Right now it includes the resolved IP + resolved port. I just need the resolved IP address (hostnames)
1
vote
1answer
2k views

haproxy status reporting

I've just started using haproxy, so excuse me if I sound silly. haproxy itsekf is working fine and this is the config file that's in use: # This file managed by Puppet global chroot /var/lib/...
12
votes
4answers
1k views

How do I deal with the removal/eradication of an unknown worm on our network?

TL;DR I'm pretty sure our small network has been infected by some sort of worm/virus. It seems to only be afflicting our Windows XP machines, however. Windows 7 machines and Linux (well, yea) ...
11
votes
4answers
2k views

Windows Domain replication monitoring tool

I am looking for web-based interface GUI, or some kind of monitoring tool that will show replication status for a domain. I know I can use repadmin with various options on the command line to query ...
3
votes
1answer
120 views

How do I get the network usage of a server per-IP?

I'd like to know a tool to programmatically measure, in KB/s, the load that each IP applies to a server. So far, tcpdump does a good job at telling me the amount of packets sent per second, but I ...
1
vote
1answer
73 views

What are some simple ways to capture network failures/drops to requests sent to a sql server?

What are some simple ways to capture network failures/drops to requests sent to a sql server? SQL Server comes with a Profiler tool, but doesnt seem to log dropped requests, instead only successful ...
-2
votes
1answer
213 views

Solarwinds migration

I want to migrate my solarwinds to a new VM ware. Currently my solarwinds is installed in a Windows Desktop with the database stored locally in it. During migration to a VM ware, I want to point the ...
3
votes
2answers
9k views

frequent “SNMP error” with Cacti

When adding new devices to my Cacti instance, I get frequent "SNMP error" messages in the device screen. But the error is not consistent, not even for the same device. Here's what I already have ...
2
votes
4answers
334 views

an unknown ip on network

In our office we have many PCs, all of them have static IP addresses. We had a problem with one server with ip 192.168.1.10 dropping off the network occasionally. I unplugged the network cable from ...
0
votes
2answers
677 views

nmap scan only state of port

Is it possible with nmap to check only the state of a port whether- open, closed or filtered and NOT the services behind it? The aim is to speed up scan results. Since UDP scan is also involved it is ...
1
vote
2answers
294 views

Monitoring multiple networks

I'm looking for a (or multiple if needed) system with web interface to monitor a number of remote networks. All of these networks contain multiple clients, servers, routers, switches, printers, ... ...
3
votes
1answer
333 views

How to find the reason for a weekly downtime on an Ubuntu web server hosted by AWS?

We started monitoring our web server using Pingdom and found out that we have a downtime of a few minutes every Sunday at 0:00 UTC. The test runs every minute and checks if a successful HTTP response ...
0
votes
1answer
343 views

monitoring rx/tx stats of current connections on Linux

In a Linux netfilter router, connections table only includes information on end of connections. Where I reach real time rx/tx information for each connection? (In freebsd, session table already ...
1
vote
1answer
2k views

How to diagnose intermittent connectivity issues

At work we are suffering some intermittent faults with the internet. This manifests itself as none of our desktop computers being able to make any requests externally including to ip addresses for a ...
-1
votes
1answer
127 views

Vlan and Switch setting - dummy [closed]

I need to speak tomorrow the network engineer and I would like to understand his so apologise for the Dummy question: In the school we have a cab with a 24 port Netgear manageable switch with an ...
0
votes
1answer
563 views

Is there a pingdom-like service that has hosts in Asia and South America [closed]

I am looking for a remote monitoring service, similar to pingdom, that has more global reach. Right now pingdom only has coverage for North America and Europe. Does anyone know of a competing service ...
1
vote
2answers
305 views

How to monitor how much data transfers between Exchange servers in DAG?

I recently installed a second Exchange Server (standard, 2010) to our organization as part of a Disaster Recovery solution. The two servers will soon be part of a DAG. Before placing the server at ...
4
votes
4answers
469 views

Creating an office network and monitoring all activity without a proxy

We are setting up our office network and would like to track all the websites visited by our employees. However, we would not like to use any proxy based solutions. Our work is highly dependent on ...
0
votes
1answer
134 views

Linux measure network bandwith

I have a one way connection between 2 computers (both Ubuntu). I am looking for an easy way to find the max bandwith. I need to find the max transfer rate between computer A and computer B without ...
2
votes
2answers
126 views

how to track which switches, routers are being affected by ddos

I have an enterprise network system which has a router facing the internet, beneath it a virtual chassis switch, below it an access layer switch and finally a server. My question is that when there is ...
2
votes
3answers
1k views

arp table filling up

I have a CentOS 5 system which serves as an IPSec VPN connector between my network and a couple of remote networks. Lately it is running into this problem once or twice a day where its ARP cache gets ...
5
votes
11answers
14k views

How Can I monitor internet usage within my lan

I'm the appointed IT guy at a business with 20 pcs, we have 1 sbs 2003 server, a consumer grade soho modem/router and a few network switches making up our lan. We keep on hitting our monthly ISP ...
6
votes
3answers
18k views

Open Source / free choices for SFlow monitoring?

I found the list here: http://www.sflow.org/products/collectors.php But was wondering if there are open source projects like Zenoss or others that can do SFlow collection and reporting for more than ...
-1
votes
1answer
643 views

What options do I have for monitoring internet usage by user and sites [closed]

I want to set up a linux server (ubuntu server 12.04) on my home network to monitor the internet usage and find out the users and websites that use the most bandwidth. I have looked at squid and it ...
0
votes
1answer
354 views

How to know why server traffic is used and what is using it? (windows os)

I have a VPS on which I have Windows Server 2008 R2 installed. My monthly traffic is near 100 Gigabytes per month, and I don't have heavy sites on it (no download center, no movies, just text and ...
0
votes
1answer
128 views

Total Network Monitor plus Autotask

I apologize if this is not posted in the correct area. I'm currently using Total Network Monitor to keep a basic eye on my network. My company is also about to implement Autotask. Is there a way ...
-1
votes
2answers
584 views

Tool to analyze the real time traffic in Windows XP SP2 [closed]

My client machine/(s) is/(are) Windows XP SP2. I can’t effort every time to have physical access to my server machine. To analyze the real time traffic and bandwidth between client and server machine, ...
1
vote
1answer
350 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
3answers
377 views

Best graphing tool to monitor mem/cpu/traf? [closed]

I am using Rackspace Cloud, oddly they don't have any way to measure your resource utilization considering it is a cloud service so I must find the best way to measure this so I can see when I should ...
2
votes
1answer
1k views

Windows server sending constant ARP requests to offline devices

We have a Windows 2003r2 server which is sending intermittent ARP requests to several devices which are no longer on the network. The result of this is disruption to a PLC which is running over modbus....
1
vote
3answers
104 views

Error reporting whilst away from desk

Just purchased some VPS hosting and am getting setup to get my startup app underway. For the moment I'm playing sysadmin and am running into errors galore whilst trying to work out the kinks. So I ...
1
vote
1answer
163 views

Slow internet connection for no reason

We have a cable internet connection. I've called the company when this happens and they say there's been no downtime on the modem and the signal is strong and there's no fixing or outages in the area. ...
0
votes
4answers
321 views

System Uptime Monitors

I am looking for reviews and suggestions a an online service such as http://www.alertmefirst.com/ I need a service or system that can monitor the following and provide me daily emails and monthly ...
1
vote
2answers
4k views

how to monitor web app availability with splunk?

I've recently downloaded and installed a Splunk 4.0.4 Server Enterprise trial (running on Windows Server 2008 if that matters), and now I want to set it up to monitor a few web pages in addition to ...
2
votes
3answers
857 views

Getting an alert when my oracle database goes up or down

How can I get an e-mail alert when my oracle database comes up or down? I have a database that I need to know when it goes down (it would be nice to know if it has come back up), preferably from a ...
-6
votes
3answers
57 views

Does apache log client IPs [closed]

Does apache log client IPs per request by default? If not, what are some common ways to do this?
0
votes
1answer
1k views

3com Vlan setup

I am setting up a vlan on my 3com switch. The switch is a 4200g 48 port. I have set up 3 vlans i have the generic vlan1 and I have created 2 other vlans 2 and 3. I have manually give them their ip ...
0
votes
2answers
209 views

VLAN Testing 3com switch

Hi there I am currently setting up a couple of vlan in work. Hoping that this is going to help with network traffic. The one question that I have is how do I test the vlan when I have finished to ...
2
votes
1answer
273 views

How to Monitor and Log Port Usage and Destination Attempts of a local computer from a Linux Gateway?

I have access to a linux server that is acting as the gateway to an internal network. There is a MagicJack Plus device plugged into this network via CAT5. The MagicJack gets its ip via DHCP from the ...
5
votes
2answers
261 views

Aggregating NICs for receive only connections on Linux

I am setting up a network monitoring system on RedHat 6 that will be receiving the packet feed from an inline tap. One of the functions of this device will be running Snort. Putting two NICs in the ...
13
votes
5answers
6k views

Free open source alternative to pingdom? [closed]

is there an open source alternative to pingdom for simple monitoring of uptime that I can host myself? Should report responsetime and latency for web servers with alert of downtime. I'm looking for ...
0
votes
1answer
56 views

gather information about packet from malicious ip

I have a glassfish server running some webservice and I noticed that there is an abnormal traffic from japan (150.70.x.x) in my iptables log file and I dont have any user in this country . Until now ...
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 ...
4
votes
1answer
160 views

Best software for taking a “System Information Snapshot”?

I am curious what people would recommend as the best software for taking a system information snapshot? This would be for use in a technical support fashion.
-4
votes
1answer
109 views

Can network admin see what's goining on inside XP Mode on Windows 7? [closed]

I have Windows 7, and installed XP Mode in order to run certain work programs that won't run in Windows 7. Although both Windows 7 and XP Mode share the same physical connections, they have different ...
0
votes
3answers
180 views

Monitoring networks and switches [closed]

I'm new to this area when it comes to monitoring services and hardware devices. Is there anything specific I need to know? 1) Are some hardware devices more compatible then others? Like, will some ...