Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [network-monitoring]

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.

1
vote
1answer
28 views

Monitor outbound connections

How I can monitor outbound connection that are made from my server along with the program/application which has made the connection request? I have tried using the below command and I am not much ...
0
votes
0answers
11 views

How do you monitoring nginx request rate per a specific location?

How do you monitoring nginx request rate per a specific location? I want to know what the incoming request rate to a specific location is to be able to compare that to the request handler rate and ...
3
votes
1answer
119 views

how to monitor windows vpn connectivity?

I have set up Windows 10 built-in VPN for the use of one program and I have sense that this connectivity is bad. Generally my Windows machine has very reliable network connection but connectivity in ...
0
votes
0answers
8 views

Sudden spike in inbound bytes on HAProxy

I was watching the real time data on Google Analytics and I noticed that page views suddenly dropped by 50% for a small period of time. The drop occurred at 6.28PM. When I noticed this, I went into ...
0
votes
0answers
27 views

Dropping SNMP request from 10.20.30.20/26611 to LAN:10.20.30.10/snmptrap because: authentication algorithm failure for user: <username>

I got a problem. After restarting (power off/on) Cisco ASA 5525 Version 9.1(2), I got this (show logging result): Nov 21 12:11:03 TJT: %ASA-snmp-3-212006: Dropping SNMP request from 10.20.30.20/9708 ...
0
votes
0answers
44 views

how to monitor Linux IP Route table change via SNMPD?

I am trying to use "inetCidrRoute" SNMP object, but it does not give out a clear number as "number of routes in the machine", how exactly can I do that? I want to make sure the number of routes does ...
0
votes
0answers
24 views

TR-069 How to connect multiple ACS servers to a single device (CPE)

In general in the device (CPE) configuration there is only one field to set the ACS URL. But am in a situation(long story) where i need the device status and data to be sent to 2 different ACS servers(...
0
votes
0answers
32 views

hetrix bot high requests detected in incapsula firewall

I have been monitoring real time results through incapsula, and have noticed that there is a rather large number of requests coming from a hetrix bot. Here is a image, and this is just one ip of ...
0
votes
0answers
150 views

On machine reboot via SNMP

Is it possible to reboot a windows or a linux machine via SNMP? Most of information I've found is related to the reload of the SNMP service itself, instead of host reboot.
0
votes
0answers
38 views

Sending ARP requests with SmokePing

I have been using SmokePing to monitor my local network for some time now and I'm happy with its graphs and email alerts. I use the fping probe and it works as expected. I found however that, every ...
0
votes
0answers
126 views

Monitor outgoing network usage per HTTP request

In Apache prefork server running PHP application on Linux, each HTTP request might fetch some data from other server, for instance Memcached. Let's say we want to find out top 10 HTTP requests (ex. ...
1
vote
1answer
1k views

How to reset the admin password for Observium

How can i reset the password for the user admin with MySQL or a Observium script. MariaDB [observium]> select * from users; +---------+----------+------------------------------------+----------+---...
0
votes
1answer
1k views

no active checks on server [xx.xxx.xx.xx:10051]: host [host] not monitored

I am using Zabbix Active Agent to monitor hosts over the network but getting "no active checks on server [xx.xxx.xx.xx:10051]: host [host1] not monitored." errors only in one host with same exact ...
0
votes
1answer
1k views

Zabbix disk space monitoring using active agent in linux server

Zabbix server is giving same value for all linux servers upon disk space monitoring using Zabbix Active Agents. I am using Zabbix server 3.2. Please help.
2
votes
1answer
378 views

How can I enable WinHTTP trace logging in Server 2012 R2 for viewing raw HTTP commands and application details?

I have an application running on a Windows Server 2012 R2 system and the app leverages winHTTP for various network requests. It's not able to communicate with another server on the network and I ...
0
votes
1answer
885 views

“Couldn't resolve host name: Could not resolve host:” in Zabbix

Getting "Couldn't resolve host name: Could not resolve host: example.zabbixagent.com; Name or service not known" in Zabbix server although DNS and hostname of Zabbix Active Agent is correct. Is this a ...
0
votes
1answer
308 views

Send notification upon Zabbix active agent shut down

I have configured zabbix server with zabbix active agents but I am not able to get notifications when zabbix active agents shut down. I have no issue getting email notifications when active agents ...
0
votes
0answers
57 views

broadcast traffic in rrpp ring with huawei switches

Good Morning, I hav a ring network with 4 HUAWEI S2700 SWITCHES for clients and 2 HUAWEI S3700 switches for servers I am using rrpp protocol and I have disable stp in the port involved in the rrpp ...
2
votes
1answer
640 views

Log and monitor network usage by session/connection

In Resource Monitor, Network tab, in the Network Activity section, I can see each active session and how much bandwidth it is using. I'd like to capture that information over a period of time, is ...
0
votes
2answers
495 views

One-way traffic with port mirror HP-2610 to Hyper-V

I have a Hyper-V box that has call recording for IP phones with the following connectivity: PBX on an access port (native vlan 42), plugs to port 22 on switch (it has no settings for VLANs, so we set ...
-3
votes
1answer
72 views

which monitoring tool is good for monitoring system hardware,software,user management and network activity for all kind of operating system? [closed]

Please kindly suggest me the tool for monitoring the system hardware, software, applications, services, user management and network related activities of IT Infrastructure.
0
votes
1answer
405 views

Windows Server 2012: easiest way to monitor ports for error 4625 NTLM attacks

I'm getting thousands of hack attacks on a Windows server resulting in Security log error 4625 entries. Hackers are using random IPs, so the usual RDPguard, Syspeace, etc. tools don't work. Port 3389 ...
1
vote
0answers
290 views

PRTG - Windows IIS Application sensor fault

I have two sensors that are giving me the same alarm. WMI: No result set (code: PE016) -- PerfCounter: No data to return. (Performance Counter error 0x800007D5) I can't for the life of me ...
0
votes
1answer
97 views

Nagios Core - Automation

We are using Nagios Core for monitoring devices and we are currently facing some hurdles with monitoring a large scale environment. It requires a lot of manual tasks such as collecting OID's and MIB's,...
1
vote
1answer
22 views

Determine network usage of a known process without root/elevation

My application is starting another process, and I'd like to keep track of how much data that new process has read/written from/to network sockets. I've found tools like nethogs, but they require ...
0
votes
0answers
40 views

Total internet data usage in a small network

We have got a small network with 20-30 Windows systems that is connected through a Fortinet Fortigate Firewall with an LTE Internet Connection that has the speed of 20 Mbps. Basically, my question ...
0
votes
1answer
591 views

Use iptables chain to monitor traffic

We have a linux box in use as a router, with various rules (ip, tcp port, udp port, etc.) in the iptables FORWARD chain, which might be added to or removed from at any time. I need to monitor ...
0
votes
1answer
61 views

How do I set OpenNMS to have two types of Node Down events with different severities?

For example, I have laptops in one subnet which keep turning on and off so if a node on that subnet went down I'd class that as an intermediate incident. However, on another subnet there are critical ...
-1
votes
1answer
59 views

How to collect I/O Bandwidth statistics on ubuntu 14. [closed]

I want to write script/service to collect I/O bandwidth consumption on daily basis. I know nload tool which will show total I/O data transfer from the time we executed the command. I want script to ...
1
vote
1answer
1k views

How can NETSH be used to sniff and collate network traffic?

I am trying to capture all network traffic and view it in a human-readable way. To begin packet capture with netsh, I am running the following command. netsh trace start scenario=NetConnection ...
0
votes
0answers
48 views

How to securely gather multiple servers data for monitoring

I got an 'admin' server where all admin GUI can be accessed. I also have 2 other servers, 1 web and 1 db. As I expand for a nodejs server/api, I was wondering how could I transfer servers information ...
1
vote
0answers
102 views

Link-layer scan in Linux

Short version: How can I determine what IP addresses are present on an Ethernet network without assuming they are all on the same subnet? Long version: I've got a device on a network I can SSH into ...
0
votes
2answers
171 views

Cisco C3750, detect high traffic

I would like to know what are the interfaces that produce more traffic in my switch. How can I do that?
0
votes
1answer
732 views

Proxmox Virtual Machine Bandwidth monitoring

I have been trying to find some tool to allow me to monitor and get stats from virtual machine network usage. I have a proxmox host with several virtual machines, and I would like to have some sort ...
3
votes
2answers
491 views

Monitor DNS queries of all hosts in LAN?

We have a simple setup: Some workstations (Mac and Linux) and a gateway router. For statistics and security purposes I want to watch all DNS queries done in our intranet. Unfortunately the gateway ...
1
vote
0answers
63 views

Rsync cron works but monit cron doesn't

I run a 14.04 Ubuntu server. I'd like to automatically receive Monit email alerts. Typing /usr/bin/monitcron.sh as root all works fine manually. I tried cron with Rsync as a test. Cron works great. ...
0
votes
2answers
138 views

bidirectional Bandwidth measurement snmp with remote office

Hello I have a dedicated system for monitoring connected to the network in all remote offices. Our main/nagios server have connection to all. I want to get the bidirectional Bandwidth measurement ...
1
vote
0answers
40 views

Socket connection opening timstamp

Is there a way to get the timestamp when a tcp connection (tcp) was opened? lsof and netstat are only reporting the process. Sniffers are no solution. My application is a Business Analytics solution ...
1
vote
2answers
211 views

Methodology to find a “stable” IP addres within some ISP's AS network

Some definition(s)/meaning(s): Stable IP address - a host within Internet Service Provider (ISP) Autonomous system (AS) network, replaying to ICMP type 8 echo request. Genesis: My routers monitor ...
0
votes
1answer
56 views

How can I monitor server varialbes with Microsoft Network Monitor?

I'd like to understand how IIS server populates the HTTP_X_FORWARDED_FOR and the REMOTE_ADDR server variables, how can I "parse" manually the values that IIS is using to determine these variables by ...
1
vote
0answers
52 views

Ec2 c4.large not responding

I have this ec2 c4.large machine where I'm hosting a video player, for iframe embed purposes in favor of other sites. I'm posting aws stats from aws admin interface: As you can see, the cpu is ...
0
votes
1answer
231 views

Security Test and Monitoring for AWS EC2 running SFTP using OpenSSH? [closed]

I have an EC2 Instance that is running SFTP via OpenSSH on Amazon Linux (CentOS). I'd like to run some tests to check for vulnerabilities that I'm not aware of, and I'd like to run monitoring software ...
0
votes
1answer
445 views

Figuring out total bandwith usage on a Zyxel Zywall

I've got a Zyxel Zywall USG 100, and I'm trying to figure out the total bandwidth usage. That is, I'd like to find out if some user complaints about speed is related to a saturated connection - or ...
0
votes
1answer
237 views

network traffic capture between 2 vms

I am not a pro with networking and am trying to understand the same better. Below is the setup I have. Host system is OSX running VirtualBox. 2 virtualbox VMs (VM1 and VM2), each running Ubuntu ...
1
vote
1answer
194 views

How to see + group a list of active tcp connections on a windows server

A client has asked me to take a look at their windows 2008 server because it is running extremely slow. The server is running behind the Windows Firewall (yes, i know) and I believe the application ...
0
votes
1answer
28 views

Determine Outgoing data

I have 2 servers running in AWS, both are running Redis and the Data-Dog client. I just looked at our bill and see that we had 800GB of NetworkOut data. I've narrowed down the traffic to these 2 ...
0
votes
0answers
139 views

Limiting Wi-Fi monitor interface traffic

I am monitoring Wi-Fi traffic on Linux using virtual wireless interface in monitor mode, created by command: iw phy $PHY interface add $WLDEV type monitor flags fcsfail otherbss When I start ...
1
vote
2answers
116 views

How to analyze bytes transferred over a group of servers?

We have around 50 virtual machines. I installed collectd, graphite and grafana and we have some traffic statistics like these: That produces a graph like this: The lines are incoming and outgoing ...
2
votes
3answers
475 views

How do APM systems monitor and collect machine interactions?

So I generally understand how things like New Relic instrument a .NET app -- the CLR Profiler API makes perfect sense. But what I can't figure out is how things like AppDynamics understand ...
0
votes
1answer
2k views

How reliable is /sys/class/net/eth0/statistics/rx_bytes for bandwidth statistics?

I found this script at https://github.com/Cosmologist/collectd-network-bandwidth-usage. <Plugin exec> Exec user "/tmp/exec-network-bandwidth-usage.sh" "eth0" </Plugin> It runs a ...