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.
2
votes
1answer
101 views
Linux NetSec/IDS Bridge
What I am looking to make is a linux system that acts as a bridge. It simple forwards any data sent on one device over to the next device. It does not attempt to block incoming attacks or redirect any ...
2
votes
1answer
640 views
Easiest way to install Packetfence or similar onto my network
We have a simple small business windows network with very basic internal security. We are a small college and want to provide access to the internet to your student body, but not to the internal ...
2
votes
2answers
92 views
finding a spamming computer on the network [duplicate]
Possible Duplicate:
How do you detect a spambot on your network?
Our network of 120 windows machines has 1 or more computers sending spam. Is there an easy way to find that machine, without ...
2
votes
3answers
307 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 ...
2
votes
5answers
248 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 ...
2
votes
1answer
114 views
Show bytes transfered on an active connection
Is it possible to show bytes transfered over time in real-time on an active connection on the command line? I can do netstat and get the bytes at that time, but wonder if it can be adapted to show ...
2
votes
5answers
1k views
Juniper NetScreen NS-5GT traffic monitoring
I've done casual research into the subject and am truly dismayed at the lack of compatible tools for such a simple task. Maybe someone can provide assistance.
We have a NetScreen NS-5GT in the ...
2
votes
1answer
104 views
What free and efficient web/trafic filtering options are good for this situation?
The Story (you can skip this if you like)
So my girlfriend got a job as pedagog at a small boarding home (around 40 kids, age 10 to 18), 3 weeks ago. I went there once and surfed the web from a ...
2
votes
3answers
1k views
SNMP Bandwidth Monitoring - Billion Router
I have several sites around the country, all sites are using the Billiion BiPAC 7402GX router.
I need to setup bandwidth monitoring tools to allow me to see the sites visitied, amount of bandwith up ...
2
votes
1answer
630 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 ...
1
vote
4answers
245 views
Is there a way to see if my network traffic is being logged?
I'm connected through a LinkSys router with a custom linux on it. Is there any way to see if this router logs my network traffic, reading headers or something else? I don't have access to the router, ...
1
vote
5answers
1k views
Is there a command for monitoring network connections in realtime on FreeBSD?
I'm having problems all over our LAN where Firefox is not closing network connections when using our internal webapp. It closes some but not all of the connections, repeat this often enough and your ...
1
vote
3answers
683 views
CentOS monitoring traffic on port
I am looking for a tool to monitor traffic on some ports of a CentOS server.
On this server each service runs on a port from 3000 to 3050 and I would like to compare traffic consumption on these ...
1
vote
3answers
337 views
Unix software to continuously monitor packet loss
I'm looking for some software to monitor packet loss or packet retries.
Preferably something that continuously monitors vs. a testing approach
and preferably free.
My server's OS is debian. I'm ...
1
vote
1answer
108 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. ...
1
vote
2answers
191 views
Unknown device on network with strange ports open. Trying to find it
Situation:
We recently turned off DHCP in favor of fixed IP addresses, and in the middle of the old DHCP range for the legacy network segment, we found a device responding to ping but without any of ...
1
vote
5answers
195 views
Finding malicious network usage in a LAN
I manage a small LAN (30 computers, mix of Linux, Windows, and Macs). Transferring a 100MB file to a local server (i.e. in the office, not on the Internet) used to take me about a couple minutes, but ...
1
vote
5answers
114 views
Custom server monitoring: Monitoring number of specific files in specific directory
I have many server running on live. Each server has many application. Each application has directory like /etc/somedir1, /etc/somedir2 where in each of that directory has many .html files. The ...
1
vote
5answers
960 views
Is there a small business router that shows bandwidth usage graphs in the admin panel?
I support a large number of public libraries that are having their networks upgraded in response to a grant application. These libraries are generally home to between 6-15 computers and have little ...
1
vote
4answers
3k views
Graphical Ping utility with logging
I need to continuously test the quality of the connection between hosts, and I would like to use ping for that, in order to see WHEN the problem occurs.
It should provide LOG of the pinging, with ...
1
vote
3answers
251 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 ...
1
vote
5answers
878 views
Monitor traffic by source/destination IP address
I need to monitor traffic coming in and out of my server. Knowing the total in/out bandwidth is good, but ideally I would like to know how much traffic was sent to what address (we are talking about ...
1
vote
2answers
224 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, ...
...
1
vote
2answers
336 views
How to prevent file uploads to the Internet from within the LAN
We use a Squid proxy server for outbound requests to the Internet. We would like to prevent any kind of file uploads to a website in the Internet (for example, RapidShare ...). How do we achieve this? ...
1
vote
3answers
99 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
3answers
479 views
Network Diagramming software options?
I've used The Dude to map my network, but I can only export the network map as a graphics file. I've also used Dia and Vision to manually diagram portions of my network.
Does anyone out there have a ...
1
vote
1answer
663 views
Configuring Fiddler to watch specific domains
I'm using Fiddler to monitor some HTTP traffic. I want to configure it to watch traffic from a few specific domains.
I know that
CustomRules.js can be modified to manipulate traffic passing through ...
1
vote
2answers
493 views
IBM x3500 Server managament/monitoring tool
I took over monitoring an older IBM x3500 7977 server and i don't have much knowledge of IBM servers.
I'm looking for the equivalent of Dell Server Administrator from IBM, just to monitor and alert on ...
1
vote
2answers
2k 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 ...
1
vote
2answers
205 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, ...
1
vote
2answers
31 views
Need a resource to find out about latest attack activity?
Thought about this seeing another question pop up about a user agent string showing up in the poster's logs; is there a site for sysadmins to go to for finding the latest information about ...
1
vote
3answers
1k views
How can I monitor remote customer Windows/Linux PC's/Servers without opening a port in their firewall?
I work for an IT service provider - we support a range of Windows and Linux servers/PC's on our customer sites. I'm looking for a way to monitor basic stuff on these devices (e.g. disk space usage, ...
1
vote
3answers
175 views
what is my network doing?
I'm trying to determine what sort of data is coming or going from my domain. The activity light on my modem and firewall are flashing like crazy regardless of the number of actual computers connected. ...
1
vote
1answer
338 views
Network Monitoring Tool Recommendation [duplicate]
Possible Duplicate:
Network Traffic Monitoring
Hello,
My company is looking for a monitoring app/tool that would allow us to capture and graph statistics on network performance. As a ...
1
vote
3answers
226 views
Moving co-location facility (managed network to unmanaged)
Our current co-location facility provides a managed network environment (e.g. firewall, etc.) for our servers. We are considering a new co-location facility that offers us more rack space and higher ...
1
vote
4answers
216 views
computer status on a network
Is there a way out there, whether through configuration of windows server 2008 or third party software to monitor a computer?
Say, I have a computer on my network named WORKSATION01. I want to have a ...
1
vote
3answers
693 views
What are some of the commonly used rule actions in snort other than the defaults?
I'm writing a strict snort rule parser and I would like to accommodate snort rules from popular plugins. The documentation specifies that any action/type is possible because they can be defined by ...
1
vote
2answers
105 views
network diagnostics and output to csv
I'd like to know what people are using on *nix to gather output for network traffic, diagnostics, discovery. I know this is a pretty broad question but My immediate goal here is to be able to gather ...
1
vote
1answer
52 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 ...
1
vote
3answers
304 views
Linux: grep-able monitoring of network traffic and number of connections
I need to collect certain monitoring data every minute and send it to a monitoring server. The source of that data must be parseable using standard Linux tools. For example, to monitor number of ...
1
vote
1answer
346 views
How To Setup “Performance Monitor” As A Bandwidth Counter?
I have managed to create a Counter for bytes/second on Windows 2008 R2.
How can I actually count the bandwidth for my machine (inbound and outbound)?
I am after the effects similar to DU meter.
I ...
1
vote
2answers
121 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 ...
1
vote
1answer
115 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 ...
1
vote
2answers
2k 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
...
1
vote
1answer
2k 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 ...
1
vote
3answers
290 views
Remote paging with Nagios when network is down and email won't work — cellular modems and alternatives
What is the best option for remote paging when network services are down? I'm looking for a solution that can let me know when network services are down during off-hours only, and especially when ...
1
vote
3answers
424 views
Deep Packet Inspection - Does it work on video content too?
Someone told me that deep packet inspection works on the content of the video being said - aka if i am watching a video they can get the content/text and filter/censor it based on that.
They also ...
1
vote
4answers
305 views
Open source tool monitor network
I am after an open source tool to monitor the network traffic of a small lan. I thought of wireshark but the ammount of details it captures its massive. What i need is just a basic analysis of the ...
1
vote
2answers
560 views
What are Discrete Alarms/Contact Closures/digital inputs? [closed]
I am doing research for a masters class and I was asked to research monitor and alarm systems. I have been looking all over the web for these subjects but it seems its something relatively new or ...
1
vote
1answer
996 views
Juniper router SNMP montioring
I've been asked to write a script that checks the status of all interfaces on a Juniper router using SNMP. I know how to use SNMP walk and have written a test perl script to retrieve the hostname.
...
