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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-2
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0answers
20 views

Windows 7 - System process with strangely high network usage [on hold]

I was just noticing my internet running a little slow, so I popped open Resource Monitor to check what process were accessing the network. Strangely, System (PID 4) is using 150KBps (100% of my ...
0
votes
1answer
14 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 ...
0
votes
1answer
76 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 ...
0
votes
0answers
14 views

Send SNMP Trap on Forwarding Table changes

I'm very new to router setup and configuration. I was wondering how can I enable sending a SNMP trap (on a Cisco router) in case Forwarding Table changed.
0
votes
0answers
37 views

Exporting SNMP OID values from wireshark capture?

I am trying to figure out how I can export the SNMP OID values that wireshark picked up. My issue is that when I export the raw data it is all together and not seperated. All I want to to is get only ...
-2
votes
1answer
54 views

How can i send daily alerts for linux server monitoring using Monit tool(free edition)? [closed]

Hi i am using monit free edition tool to monitor server status, but in that the alerts works only when some triggering action done. But i want to send a daily alert of all the details of server as ...
0
votes
0answers
21 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 ...
0
votes
2answers
64 views

How to troubleshoot network from customers perspective?

We have a web application that we host that is customized for multiple customers. Each customer accesses their version of the site via their own custom subdomain. We are running into an issue where ...
-1
votes
1answer
44 views

How to measure network service quality? [closed]

How can I say if my network as a quality service? According to wikipedia (http://en.wikipedia.org/wiki/Quality_of_service ), an example on how to measure the service quality is high bit rate, low ...
0
votes
2answers
31 views

Suspect UDP traffic on lo interface

I'm monitoring the lo interface with iptraf and am getting a lot of movement in the following form: UDP (268 bytes) from 127.0.0.1:49254 to 127.0.0.1:49254 on lo This message appears on average ...
-1
votes
1answer
41 views

Using a single APC UPS via network switch to gracefully shutdown many servers

Here is my situation. I have 10 Dell servers in my rack with 8 1500VA battery backups. I would like to take 1 of those battery backups and connect it to my network switch and use a software solution ...
-1
votes
2answers
70 views

Simplest way to monitor and log the internet traffic of a ubuntu server [closed]

I'd like to know if there is a simple program for ubuntu server (preferably 12.04), without too much configuration, which will allow me to check what processes are using internet bandwidth, how much ...
0
votes
1answer
100 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 ...
-4
votes
1answer
38 views

Is there a way to display my router's bandwidth usage graph on a web page? [closed]

My router has bandwidth graphs that update once per second. I am building a status screen (as a web page) to be displayed on a TV in our tech department, and I'd like to embed the graph so we can ...
-2
votes
1answer
68 views

Layer 2 and 3 Network and Topology discovery of blackbox network [closed]

I have been given a company network to perform layer 2 and layer 3 network discovery. I have to find out the network topology and infomation about network equipments including switch, router, server, ...
4
votes
5answers
238 views

Nagios server best practices?

I run a medium-sized Nagios server. It monitors roughly 40 servers with 180 services currently and is only growing by the day. I migrated from an old Nagios setup that was configured in a very ...
-6
votes
1answer
91 views

How to monitor all network traffic [closed]

I have installled wireshark on my server but can only monitor traffic through the local nic but all network traffic does not go through the server. I would like to monitor all network traffic. Are ...
2
votes
1answer
98 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 ...
0
votes
1answer
63 views

Nagios mysql check service definition configuration?

I'm using the Consol Labs MySQL Health Check plugin to monitor my MySQL database. I'd like to change the warning and critical thresholds for the threads connected parameter, but have forgotten how. ...
2
votes
1answer
110 views

Monitoring IPv4 vs IPv6 Traffic

We have a fully functional dual-stack network running in our business. Has anyone found a simple tool for monitoring IPv4 vs IPv6 traffic ratios on a given host? When I say "simple" I'm thinking a ...
0
votes
0answers
64 views

Zabbix aggregate checks shows wrong statistics

Please, help with a Zabbix problem. I configured aggregate check, which should calculate the group load on outgoing eth0 for the whole group "Linux Servers" I have in Zabbix. Here is a screenshot of ...
0
votes
0answers
84 views

Tcpdump stops capturing wifi data while running in the background

I have a problem capturing wifi data using tcpdump while running in the background. OK, lets get some facts: my wifi-device is named wlan0 wlan0 is in monitor mode (that's what I want) I'm using ...
0
votes
0answers
55 views

monitor network bandwidth via ssh

I'm running a Centos 6.4 server with cPanel. WHM (admin side panel) shows about 100GB of bandwidth this month. However, the server's RTG shows 3.4TB last 30 days, 121GB past 24 hours alone. Doesn't ...
0
votes
3answers
116 views

Monitor HTTP usage on network from Linux free [closed]

I manage a small office network. I am looking to start monitoring/logging internet usage (website requests) for each user on a small network. All the windows clients are running through a switch to a ...
0
votes
1answer
45 views

Only one server behind a switch cannot access the internet and vice versa

I have multiple servers deployed behind a single switch. All the servers have their own public IP addresses. Suddenly one of them (say A) cannot be accessed from the outside by any means, e.g. HTTP, ...
-2
votes
2answers
75 views

Collecting Web traffic and monitoring reports [closed]

My company is a med home health company and I have been tasked with seeing what people are doing on the internet. There's been a lot of people complaining of people shopping, surfing internet, etc on ...
-1
votes
3answers
289 views

Script to log internet connectivity outage [closed]

What is the best approach to setting up a script to monitor and report a server's connection to the Internet? I'm not referring to connection to the local network, but rather a server's (or the whole ...
-3
votes
1answer
26 views

Grabbing sniffed packet data

So I have a Fiddler2 capture. In the capture, there was a file that was downloaded, file.dat. I am trying to extract the downloaded file from the capture. I can't seem to find any way to do that. Any ...
0
votes
1answer
71 views

Resource requirements for cloud OpenVPN server [duplicate]

I am building a proxy server for a client of mine. My platform of choice is Amazon EC2 with Arch Linux and Squid running. For the encryption part I have chosen OpenVPN for simplicity and large ...
0
votes
1answer
101 views

network gateway can't see traffic for monitoring

I've just setup a new CentOS 6.4 machine to act as a default gateway for the LAN at head office. It's primary task is simply to route traffic to the appropriate place, ie VPN servers or the firewall ...
1
vote
3answers
99 views

How can I find which program is making a specific network request?

I have 2 Windows Server 2003 boxes that sit idle, for the most part, on weekends. Yet when I look at my router's DNS logs, both machine's are making many requests for www.yahoo.com when there's nobody ...
0
votes
1answer
80 views

add a cgroup controller into libvirt

libvirt by default has cgroup controllers of ["cpu", "devices", "memory", "blkio", "cpuacct"] as shown in qemu.conf. I want to add one more controller of net_cls. I tried to modify the config file to ...
0
votes
1answer
51 views

Masquerading a Webserver [closed]

I was trying to gain access to a piece of obsolete network hardware by intercepting into the configuration information that it is downloading from a remote server(with a public IP - This server exists ...
2
votes
1answer
63 views

Network monitor 3.4 issue

I am getting the following error message when I try to run network monitor on a windows 2003 DNS server I am trying to decommission. C:\>Nmcap.exe /network * /capture KerberosV5 || TCP.port==389 ...
0
votes
1answer
48 views

Developing an SNMP agent for linux

I'm developing a snmp agent for linux and I wonder if there is a directory or file proper protocol statistics snmp OIDs to develop snmpInPkts, snmpOutPkts, snmpInBadVersions, snmpInBadCommunityNames. ...
0
votes
1answer
170 views

Collectd Network plugins didn't open listening port

I tried to send the monitoring data to my centralized collectd and found this error in the log [2013-08-09 07:04:22] bind: Cannot assign requested address [2013-08-09 07:04:22] network plugin: ...
1
vote
2answers
118 views

Testing DNS “health” — whether domains are pointing to the correct IPs

I'm planning on switching from one registrar to another. Fortunately I've been able to pre-enter the zone information so that when the transfer takes place, everything should behave the same. ...
0
votes
0answers
120 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. ...
0
votes
1answer
65 views

tshark duration of a conversation for a ip address

i can retrieve the follow info from a .pcap : ================================================================================ IPv4 Conversations Filter:ip.addr==1xx.1xx.0.1xx ...
2
votes
1answer
41 views

How can I monitor embedded, networked gear that doesn't have SNMP or any other standard protocols?

I need to monitor (and control if possible) hundreds of pieces of Audio Video gear. Every make/model uses a different protocol, usually simple ASCII strings like "status?\r" with a reply like "OK\r". ...
0
votes
4answers
281 views

Ping only OS Detection with nmap?

I am interested in using nmap for discovery, and to figure out the OS of each host. I understand that nmap does this, and can be enabled and controlled as described in the man page: OS detection ...
1
vote
1answer
62 views

Icinga Monitor Website for String

I am trying to use Icinga to monitor a website for a particular string. When I run the plugin from the command line, it seems to work fine, but in Icinga-Web, it always shows up as successful no ...
0
votes
2answers
426 views

Is My Website Under DDOS Attack? [closed]

Recently I noticed that the CPU load of my server is increasing rapidly. In any day, the CPU load does not reach 2.5. I have the following server: Intel® Xeon® E3-1270 v2 Single Processor - Quad Core ...
0
votes
1answer
116 views

monitor vps bandwidth usage

I have a vps guest whose ip is 192.168.1.20. I add the following lines to iptables, # iptables -A FORWARD -o eth0 -s 192.168.1.20 # iptables -A FORWARD -i eth0 -d 192.168.1.20 Then I run this line ...
0
votes
3answers
247 views

Getting alerts from remote Icinga/Nagios instance

I have an Icinga server (which is basically a fork of Nagios) at one of my clients' sites. I access the server via ssh and don't have access to other ports. Since there are a couple of things that ...
3
votes
1answer
182 views

Enabling TCP md5 signature option in centOS?

I'm trying to enable md5 checksum/signature for tcp packets in centOS (the main use case to stop tcp RST attacks, etc). It seems like I may be able to do this for individual ports using netcat or via ...
1
vote
2answers
565 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 ...
0
votes
0answers
74 views

Monitoring bandwidth on multiple hosts with no control of a router

I'm looking for ways to monitor bandwidth usage for some Linux servers (and a couple of Mac/Windows servers, but if I can only do the Linux servers that will be OK). I do not control the router that ...
2
votes
2answers
103 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
votes
1answer
76 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); ...