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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1answer
7k views

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

This is my first time asking a question here but I've been lurking around Serverfault and Superuser for a bit. I've tried searching for this but I have yet to find something that would be able to help ...
0
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2answers
82 views

Software to monitor Bandwidth, Memory Usage, Load, Etc [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? Hey I'm just wondering if there's any software available to monitor Bandwidth, Memory Usage, Load, etc. Doesn't matter if ...
2
votes
3answers
833 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 ...
2
votes
3answers
502 views

ntop: Which HTTP downloads (URLs) caused the traffic?

My server causes too much traffic, so I have installed ntop to monitor it. On the Summary -> Traffic page in the Global TCP/UDP Protocol Distribution table I can see the traffic is periodically ...
0
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4answers
99 views

HTTP probing utility

Looking for a probing utility that will periodically issue HTTP request and somehow provide an output (CSV/UI) on web server / network response times. Nice to have: JavaScript-parsing ability to ...
1
vote
1answer
260 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 ...
0
votes
2answers
273 views

What is the impact of intermittent traceroute timeouts

There are intermittent timeouts upon doing traceroute to an IP address. What impact does it have on say when you are trying to connect to a DB from an App server? traceroute to ...
5
votes
1answer
7k views

Too many incorrect checksum errors in TCPDUMP

I find too many incorrect checksum errors from a TCPDUMP done on a GNU Linux 64bit server. There are close to 50% incorrect chekcsums in the export? cksum 0xe61f (incorrect (-> 0x8c37) How can we ...
2
votes
1answer
297 views

Embedded device for deploying network probes

Our environment has a multitude of remote subnets that we monitor by deploying Linux-based probes running various network monitoring software and other handy tools. Currently we're using surplus-ed ...
1
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2answers
273 views

Monitoring instantaneous network throughput at one second intervals?

For a testing setup I have, I need to monitor the throughput through a "router"* at regular intervals of around 5 seconds or less (sub-second intervals would be very nice, but not required). Ideally, ...
0
votes
1answer
372 views

How can I monitor the network on ESXi node for connections and find the source of a ddos attack

I'm looking for something fairly simple to install, that will monitor network traffic on the vswitch for my esxi node as we're getting ddosed and I need to be able to easily see where the traffic is ...
2
votes
3answers
152 views

Looking for a host based network monitor solution

Hi all! Problem So, my hosting company has a network usage graph for my dedicated server. It seems that one day earlier this month, my network usage suddenly spiked with several hundred megabytes ...
0
votes
1answer
186 views

CPU & Memory Usage Log & Performance

I want to have an idea of the amount of CPU and memory that is being used. I have a website hosted using IIS, and have clients connecting to it. I want to find out the amount of load that the CPU, RAM ...
2
votes
3answers
128 views

View IIS application responses

I know IIS logs all requests made to the server. If my application makes requests out to other web services, is there a way to see what the response was or at least the headers of the responses?
1
vote
1answer
69 views

Should I block any services for internal network?

I'm running a small business network, and the previous net admin allowed all services via a firewall management router. My question is whether there are any services that I should be blocking ...
2
votes
4answers
424 views

How can i measure the load of a WAN Connection with Wireshark?

I have a 100 Mbit WAN connection and want to check the load on it for a week. So I put a hub (10/100Mbit) behind the WAN connection and connected a laptop with wireshark on it. Here is now my ...
1
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1answer
440 views

Linux network connections logging

I have linux (OpenSuse) testing server and I would like to have detail log about http and ftp connections (and maybie other TCP connections). Informations I'm interested in are IP address, transfer ...
1
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2answers
126 views

Monitoring network connection of Windows Server in real-time

I'm looking for a way to monitor the network connection from my PC to a Windows Server running on our network. My PC is running Windows 7 and the server is running Windows Server 2003 R2. I'm looking ...
4
votes
5answers
232 views

Server Cloud Monitoring

I'm a consultant that has around 100 clients and I would love to monitor all my clients networks, preferably from the cloud so I can tell if their Internet is down. I would like for it to offer a lot ...
4
votes
1answer
226 views

“Enterprise Monitoring Solution” with the lightest agent?

I have a network of disparate remote VPS / "cloud" / colocated servers that I would like to monitor from a central location, using open source software like ...
0
votes
1answer
368 views

internet connection monitor

I am looking for a tool to check my internet connection (by pinging something and/or retrieving a web page) and when the connection is lost to execute some command (sending an e-mail, resetting my ...
12
votes
3answers
19k 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?
2
votes
1answer
904 views

How to monitor current output/receive queue length in Linux

I want to check the capacity and performance of my network. Besides checking the txkB/s and rxkB/s via Sar, I'd also like to see the average queue length of the network interface(so that the average ...
0
votes
3answers
113 views

I want to be notified when a LAN IP goes live

Is there a tool or something that can notify me whenever a local IP goes live on my network. It could be that it continually ping that IP and display a notification to me whenever that IP return a ...
2
votes
1answer
153 views

Low bandwidth when accessing websites outside my country

I am using a broadband internet connection from an ISP named Reliance in India. I wanted share you with a weird behavior of my internet connection. I have a 2Mbps connection and I get around same ...
2
votes
5answers
345 views

Figuring out what's causing a server to slow down

I have a potential client that has a php site that performs fine most of the time. However, every week or so, it will experience lag (slow page loading). I am sure there are a myriad of things that ...
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vote
1answer
440 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 ...
4
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2answers
2k views

How can I use nagios to monitor ssh tunnels?

I have a server that is used a middleman for a bunch of reverse ssh tunnels. I want to use nagios on that server to monitor that all of those ssh tunnels are up. Essentially I want to do the nagios ...
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1answer
145 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 ...
4
votes
6answers
335 views

Can you totally ban a PC from the local network?

I was wondering whether it is possible to ban a PC from LAN or WLAN totally or not? I know that banning according to MAC address is useless, as it can be altered. P.S: assume that no credentials are ...
1
vote
1answer
133 views

Client PCs take turn on network-spamming our domain controller - rundll32.exe seem to be the culprit

at my small office we've stumbled upon a strange problem which have started during today. It all started with our network seeming sluggish and unresponsive - user's complained about slow connection ...
0
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1answer
439 views

Monitoring multiple sites on a single server using OpsView

We have several web servers. On each of these servers there can be ~250 web sites. I need to add a HTTP check for each site on each server. Each site has a reserved host header that we know can always ...
2
votes
1answer
109 views

Network Management Growing messy and ugly need plan [closed]

Hi i currently have a network management that is really manually and there is no user management at all, i've heard that Microsoft Active Directory allows you to have a better network administration ...
1
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2answers
3k views

Problem with Icinga web installation - server side errors

I have successfully installed and configured Icinga 1.3 and got the basic web interface up and running and all is good. I'm now trying to get icinga-web to work. I've followed the instructions ...
0
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3answers
1k views

Nagios Best Practise [duplicate]

I have installed Nagios on my network, and I have some beginner questions. I would like to get some "best practice" information about the following types of server: Web Server Exchange Server ...
0
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2answers
2k views

How can I see http/https URL's in Microsoft Network Monitor 3.x capture files?

I've used Microsoft Network Monitor 3.x before for various reasons but realized today I don't know how to tell the URL inside a conversation. I've got it set for "Windows" Parser Profile and I see a ...
4
votes
4answers
580 views

Network monitoring tools with API features [closed]

We use ks-soft's Advanced Hostmonitor package to monitor around 2000 items on our network. We think it's great, the chap that supports it is fantastic, the product is fast, stable and mature but I ...
3
votes
1answer
251 views

use of nmap clogged my network

I was using nmap to scan the mac addresses of my network.What I found was internet connections and rest of network services badly clogged the users were not able to connect to internet.After messing ...
0
votes
2answers
467 views

How can I monitor my users' actions on my network?

I need to monitor users on my network. I currently use a captive portal router that gives users access and assigns them dynamic IP addresses. How can I monitor which sites my users are browsing and ...
0
votes
2answers
75 views

Web server end user monitoring

I am searching for a solution to monitor access and activities on my web server. There are only a handful of people who are allowed to access my https or ftp/sftp server and I would like to know: Who ...
1
vote
1answer
3k views

What causes the issue (possibly packet loss) in this scenario

I'm trying to diagnose a network related problem - please understand these points before suggesting an answer (apologies if more information is required, I will add anything people ask). We have a ...
4
votes
3answers
606 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 ...
4
votes
1answer
5k views

how to get a total bandwidth graph in munin

I have munin-node in a basic default configuration on all my servers, I would like to create a summary chart that displays total bandwidth in/out http and another chart showing total bandwidth in/out ...
1
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2answers
241 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
5answers
7k 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 ...
1
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2answers
40 views

How are OS/softwares/updates installed on end-machines in a company

How are softwares installed on end machines in a company. Going to each machine physically and installing looks very unweildy from administrator point of view. An obvious solution would be to install ...
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4answers
1k views

How can I reduce my network speed of Windows 7 64b OS?

I want to reduce network speed of my OS for testing my application. How can I do it?
1
vote
2answers
593 views

OSS Server Monitoring Software — Which is right for me?

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 ...
1
vote
8answers
821 views

Network monitoring solution [closed]

I have a big distributed system I need to monitor. Background: My system is comprised of two servers, concentrating and controlling the system. Each server is connected to a set of devices (some ...
0
votes
1answer
562 views

High Email/Network Traffic on Server - SBS 2008

We have a Small Business Server 2008 box that is using up way too much internet traffic according to some very simple reports on our SonicWall TZ-210 router. The router shows that we have used 3 ...