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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2answers
2k views

Wireshark does not capture HTTP on 8080

I am running Wireshark on my linux machine and i have simple python web server running on localhost:8080 I am capturing only local port 8080. When i open browser on localhost:8080 wireshark captures ...
2
votes
2answers
231 views

Log incoming and outgoing connections on my Leased Line

I am a System Administrator at a college where we have a leased line internet connectivity and 32 Static IPs. The Local; network is running behind the Juniper Firewall. Now I would like to log all the ...
0
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1answer
144 views

Hyper-V Client Network Dropouts

Bit of a strange one I'm having that I can't work out. The setup: Asus P8Z77-M Pro motherboard, 16GB RAM, Intel i7-3770 CPU, OCZ SSD, NVIDIA Quadro 2000 grpahics card (with RemoteFX on the client); ...
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2answers
1k views

monitor traffic using port mirroring and wireshark

We have an edge router connecting the Internet and our internal network. I needed to monitor the traffic going in and out, and make a report about which server/host uses most of our bandwidth and ...
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0answers
500 views

Multiple connections using multiple IP addresses to same PC

Background: I have a network management application (like Nagios or OpenNMS but not either one) under testing that requires all managed devices to have individual IP addresses ie. SNMP traps received ...
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2answers
1k views

monitor bandwidth usage per application or IP

i want to monitor the bandwidth usage per application or per IP, currently im using wireshark to do the work, but are there any software dedicated just for this type of job? thanks
2
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0answers
188 views

How can I set ntop not to shorten host names?

With most screens in ntop, there is a list of hosts. Unfortunately, in almost every one, the host name is shorted, for some reason. When the host names follow the company standard, this results in the ...
0
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1answer
320 views

Programmatically interfacing with Managed switches (Cisco 3750)?

I work at an organisation that has a few thousand computers and around 100 switches. To help with the stock take for the computers I would like to programmatically access the managed switches to find ...
0
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2answers
305 views

log server setup and testing, with log manager opensource

I've been trying to get a new, centralized, log-server up and running for some testing and have run into some problems. First part is that I've installed Kibana but can't get anything indexed, tried ...
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2answers
433 views

How can I scan using nmap and Zenmap all hostnames that begin with a particular string?

I have a number of nodes on a couple of networks whose hostnames all start with org. Some examples are: orgwebsvr1 orgwebsvr2 orgwebsvr3 orgdbsvrmysql orgdbsvrmssql orgdbsvrosql With nmap, I know ...
0
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1answer
178 views

Tool to automatic suspending the DDOSed website before the whole VPS is being suspended by Data center [duplicate]

I have a non-Xen VPS (don't exactly know what the software is). The past week, we had experienced several DDOS attacks on one (or some) of the hosts and because of using more than usual bandwidth, ...
1
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3answers
562 views

Netflow/IPfix Analyzer for network threats and anomalies

I'm evaluating various options for Netflow/IPfix based analyzers which focus on identifying security threats and anomalies. It would be highly appreciated if someone can provide a list of tools with ...
1
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1answer
105 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 org....
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 ...
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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 ...
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 ...
0
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2answers
91 views

Alert when a file/directory upload has failed

I am using Ubuntu and needed to know if there is any way to produce an alert when a File copy/upload operation has failed. The scenario is as such: I have file xxxxx on my computer/server. However, ...
0
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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
1
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1answer
993 views

Netflow to syslog converter

Is there any way to have netflow v9 converted to syslog? Which would be the best way to have the following idea working? Procedure: 1) The router sends UDP with the following structure: templateId=...
0
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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)
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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/...
0
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2answers
190 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 ...
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 ...
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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 ...
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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 ...
2
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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
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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
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1answer
565 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 tool....
0
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1answer
205 views

How to prevent particular program from using particular network connection under Windows?

In my company almost every user has 3G mobile connection and many of them travel a lot. To prevent expensive mobile charges I'm looking for a solution that would prevent particular program (Windows ...
0
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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 ...
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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
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1answer
313 views

Smokeping FTPtransfer probe

I'm trying to set up a SmokePing FTPtransfer graph but with no luck. I have the ping graphs all figured out but the FTP graph is just empty. Here is my Probes config: *** Probes *** + FPing binary =...
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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
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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 ...
1
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2answers
304 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 ...
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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 ...
-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
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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 ...
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
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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 - http://rubyworks.rubyforge....
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
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 ...
4
votes
2answers
5k views

unexplainable packet drops with 5 ethernet NICs and low traffic on Ubuntu

I'm stuck on problem where my machine started to drops packets with no sign of ANY system load or high interrupt usage after an upgrade to Ubuntu 12.04. My server is a network monitoring sensor, ...
3
votes
1answer
331 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 ...
1
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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. ...
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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
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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
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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 ...