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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19 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 ...
-1
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0answers
12 views

Install and Configure Monit to monitor CPU, RAM and network usage [closed]

I wanted to monitor the RAM, CPU and network usage for my single server using monit. I wanted a way so that I can view these stats from a remote localhost. If there was excessive load on the server, I ...
0
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0answers
11 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 ...
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0answers
17 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 ...
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1answer
294 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 ...
2
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1answer
921 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 ...
6
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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
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2answers
107 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 ...
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1answer
74 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 ...
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1answer
26 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?
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1answer
22 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
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1answer
69 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
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1answer
133 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 ...
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0answers
77 views

Slow Tableau server performance in a datacentre

I'm installing Tableau Server 8.3 in our hosted datacenter and experiencing strange behavior. When I run a workbook on my ( average) laptop (8GB, 4 cores, SSD) in Tableau client, it runs in about 10 ...
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0answers
113 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 ...
0
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0answers
142 views

iptables on AWS - how to get traffic mirroring to work?

Has anyone successfully deployed 'iptables -t mangle -j TEE...' for monitoring traffic on AWS instances? If so, how? My objective is for client<->server traffic between external customers and EC2 ...
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2answers
705 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 ...
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0answers
48 views

Trace IP traffic to physical machine under Linux

In my firewall logs I recently see frequent connection attempts from a 10.0.0.0/8 network. This network is used by VirtualBox, but I can exclude that these packets come from those. No physical machine ...
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2answers
93 views

Monitor server / website load of bandwith

I've been doing a lot of searching around for a tool to monitor a website's "bandwidth" usage, and I'm not talking about how many MB/data is being loaded but the servers actual output speed, to ...
0
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1answer
126 views

Monitoring “external” worm activity remotely

Some of our computers in our company has been infected with the worm Conficker. We don't know the source of the infection, but I want to monitoring the outside activity to see if we are still infected ...
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2answers
761 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
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2answers
2k views

How Fortigate 100D send log to Splunk

I have a Fortigate 100D with FortiOS 5.06 , this is my setting config log syslogd setting set status enable set server “192.168.7.4″ set reliable disable set port 515 set csv disable set facility ...
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2answers
188 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 ...
2
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1answer
951 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 ...
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1answer
76 views

nmap repeats the scan to a specific port multiple time

I scanned a subnet (16 hosts) while dumping the network traffic with wireshark. I did it 2 times and I noticed that in the traffic there is the normal SYN-SYN/ACK and SYN-RST from open/closed port, ...
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votes
3answers
2k views

OpenBSD has open ports in default installation

I have been considering replacing Ubuntu with OpenBSD to improve the security on my local server. I need to have ssh access to it, and I also need it to serve static web content - so the only ports I ...
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0answers
85 views

Randomly lose the connection to router

I have been suffering with in this problem for a really long time and I'm running out of ideas. We have VMWare (Intel model server, Intel storage - Windows storage op. system, ). In the virtual ...
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1answer
147 views

How to monitor socket connection usage and exhaustion on a server?

I have a service endpoint (java) that will be getting bursts of thousands of requests per second. In my load testing I had to tweak the server because I would run out of open sockets as there were ...
0
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1answer
177 views

Show units when doing dstat -n

Question is simple as, when i do dstat -n i get what I assume to be a unit in bytes? But i would like a way to force the units into Mb/s or for it to simply tell me the unit it is displaying. Is there ...
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1answer
60 views

How to monitor if someone is using wireshark in my corporate network

I would like to know if it's possible to monitor if any users are using a network sniffer like Wireshark in my corporate network?.
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3answers
1k views

Debian Squeeze - Monitor outgoing traffic

I have a small webserver that running on Lighttpd 1.4 which steadily uses 250GB or less bandwidth for the past couple of months. But since May the traffic spikeed to more than triple of what it was. ...
0
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1answer
39 views

Measuring HTTP traffic basic on URIs and custom headers

I'm currently working on an API service and one of the requirements is that we measure the amount of data used by each user of the system, and track how many times they use the API. So bandwidth usage ...
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0answers
164 views

Downloads of large files fail without an error

We run professional websites on IIS 6 and have complaints of (and have verified) that downloads (via HTTP) from remote locations (e.g. Australia) are incomplete or truncated. This means the download ...
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2answers
37 views

OpenNMS installation failure

I am willing to use OpenNMS to monitor my network. Monitoring it fully from the router to the nodes from a computer will be connecting the network as node not as administrator and that computer using ...
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3answers
125 views

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 management ...
1
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1answer
372 views

Resetting to factory default on a Gigamon GigaVUE-212

I purchased the above-mentioned GigaVUE-212 for my test lab from eBay, to determine if I want to use them in production. However, the thing doesn't respond to the default passwords, and I can't ...
0
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5answers
3k views

How can I monitor network performance in Linux? [closed]

I am managing a network with a Linux server (CentOS 5.4) and Windows XP Clients. Recently I have become concerned about network performance and would like to begin monitoring it. Is it possible to ...
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votes
1answer
76 views

how to log bandwidth usage on windows 8 [closed]

My Father has a Verizon jet pack (hotspot card). He is seeing 100+ MB spikes on the Verizon data usage report a few times a day. On July 4th the verizon data usage report online shows 6 GB were ...
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votes
1answer
53 views

Keeping your server safe [closed]

I have a typical vps server with some custom sites on it running on port 80, a mail server, I don't have a DNS server and it is a default ubuntu 12.04. I don't have any admin panel, I am doing all the ...
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votes
1answer
128 views

service to check if exchange is sending receiving email? [closed]

I need of a web service that check if my exchange is sending receiving email properly. And if there are some problem it sends a sms to my cellular. I don't want an app because I have not a smartphone. ...
13
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3answers
27k 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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1answer
69 views

Email administrator when a duplicate IP is found on the network

It was suggested that I ask this question on serverfault. I know this is a bit of a custom requirement but I was hoping someone currently has (or can put together) a script that checks for duplicate ...
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0answers
60 views

NagiosXI- Configuration verification failed

I am using check_ping command to check connection statistics of remote host. When I run the above command on command line, it gives me proper output, shown below: Syntax: ...
0
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1answer
448 views

Cisco Prime NCS not starting

I have received the Cisco Prime OVA file and which we placed onto an Oracle virtual environment. We turn the VM on and the CLI boots, When we try to start the NCS service we get errors. ...
-1
votes
1answer
164 views

Nagios Alerts / Notifications - SMS

Configured Nagios core 4.0 and NDOutil 2.0 both are working in ubuntu. Now i am looking for alert types in Nagios. And i am confused in plug-ins and Add-ons in nagios. Especially i am looking in ...
1
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0answers
117 views

configure frag3 in SNORT

i m trying to test IDS systems on evasion. I have picked up Snort IDS. I have crafted few fragmented packet scenario, and i m sending those fragmented packet to destination address. All these crafted ...
0
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1answer
63 views

Reading .pcap files by CISCO ASA5515-X

I have .pcap file that already includes thousands of packets. I want to analyze these packets via CISCO ASA5515-X to observe how much of them are possible to be an attack packet (malicious). However, ...
0
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1answer
125 views

Bind Requested DNS Server IP Log

I have a DNS Server which runs on a virtual linux box with several IPs. Bind provides some pretty detailed debug logs, however, one piece of information that doesn't seem to be logged is the requested ...
1
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1answer
2k views

Can Observium analyze network traffic?

I'm running a observium server analyzing my office devices, but I'd like to know if there's a way for observium to analyze the network traffic. English is not my main language, so I don't know how to ...
0
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0answers
63 views

Hadoop - On the Wire Performance Monitoring?

I have been tasked with implementing an 'on the wire' monitoring solution for a large Hadoop installation. The source of data will be a combination of taps and SPANs throughout the environment. My ...