7 votes
Accepted

How to track a specified program activity

Use Process Monitor Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity. This tool monitoring network activity also....
codeDom's user avatar
  • 185
6 votes

how to see each connection use of bandwidth?

There is a simple package called nethogs that shows the bandwidth used by individual processes and sorts the list, putting the most intensive processes at the top. It's a common package; the ...
mhadidg's user avatar
  • 1,021
6 votes
Accepted

iperf3 error exactly 7 seconds into running the test

Your client is running iperf3 while your server is running iperf, or vice versa. Ensure both run iperf3.
Pétur Ingi Egilsson's user avatar
5 votes
Accepted

infrastructure for secure network monitoring

Managed Ethernet switches often include a port mirroring (sometimes called port spanning) feature to allow all traffic to/from a given port to be mirrored to another port so you can hook up a packet ...
Spiff's user avatar
  • 104k
5 votes
Accepted

What does N * * * mean in traceroute output?

It shows that waiting for the ICMP "Time exceeded" (TTL expired) message timed out. This can happen at the end of the line, if routing was ultimately unsuccessful (perhaps the destination machine is ...
Ben Voigt's user avatar
  • 7,215
4 votes

How to monitor my connection continuity within 24 hours

You mentioned using ping, and you're absolutely right, only you don't need to stare at your screen and wait for connectivity issues. Send the output of ping to a file, and Ctrl+C to stop pinging when ...
root's user avatar
  • 3,730
3 votes

Can the network admin at work see what i browse with my work computer even if I am using a public connection, say a Hotel Wifi elsewhere?

Using pure network monitoring mechanisms - no. Using proxy monitoring, if you don't change your proxy settings - probably yes. Using DNS request monitoring, if you don't change to some public DNS ...
Jaroslav Kucera's user avatar
3 votes

What does N * * * mean in traceroute output?

It means that the packet timed out, by default waittime is 5 seconds, and if response is not received in that time it shows asterisk, and jumps to a next hop. It could time out because that router on ...
ralz's user avatar
  • 2,510
2 votes

Wireless packet sniffing on Linux. Captured data is almost only broadcasts

To capture, on a Wi-Fi network, unicast traffic not sent to or from the capturing machine, you will probably need to capture in monitor mode. The Wireshark Wiki article on WLAN captures gives a lot of ...
Richie086's user avatar
  • 5,171
2 votes
Accepted

Program or website to monitor for changes in source code of a website

Here's a PowerShell script to get a URL and check if its source contains a string. In this example we're searching for the string "twitter" at https://stackoverflow.com: $URL = "https://stackoverflow....
Atzmon's user avatar
  • 3,181
2 votes
Accepted

Matematical operations with zabbix items

You could try to make use of either calculated items or aggregate checks.
asaveljevs's user avatar
2 votes

How can I know ASAP when my PC loses Internet connectivity and I'm away from the PC

Since you mention in your other question that this is for a work enviornment, you may want to have a look at Total Network Monitor 2. It is purchased software (not free) but can contact computers (i.e....
Anaksunaman's user avatar
  • 17.2k
2 votes
Accepted

Can I receive desktop notification on Windows if an intranet server goes down?

System Monitor for Growl for Windows includes ping monitoring, http monitoring and server (port) monitoring. Notifications can be delivered as tooltips, message boxes or via Growl for Windows (...
lofidevops's user avatar
  • 1,328
2 votes

How can I know ASAP when my PC loses Internet connectivity and I'm away from the PC?

There's a few tools that might work, while not explicitly desgined to do so. The simplest/oldschool way to do this is to have some flavour of chat account - say xmpp. If the account is disconnected, ...
Journeyman Geek's user avatar
  • 129k
2 votes

What does N * * * mean in traceroute output?

All implementations of traceroute rely on ICMP packets being sent to the originator. This program attempts trace route by launching UDP probe packets with a small ttl then listening for an ICMP "time ...
Alejandra Moreno's user avatar
2 votes

Show current ping to website on Taksbar

I know this is quite an old question. I'm currently using perfgraph - http://www.codefromthe70s.org/perfgraph3.aspx It's free and it has more features than what you're looking for, the graph would ...
Christian Noel's user avatar
2 votes

Missing data from network monitoring graphs

This would be occurring because the CACTI graphs have got periods where there is no information. You have not advised what data is being lost - so the rest of this post is speculation - Most likely ...
davidgo's user avatar
  • 70.3k
2 votes
Accepted

How do I find out which program and process ID accesses a given IP address in macOS?

If it's a persistent connection and is currently open, you can find the program with the lsof ("list open files") command and its -i ("internet") option. You'll need sudo to see programs running under ...
Gordon Davisson's user avatar
2 votes

How to get actual network traffic of an application?

In essence, you are asking how to hack the network to intercept the network content. This simply cannot be done other than how you already found out. Wireshark is the way to go, but as the content ...
LPChip's user avatar
  • 60.7k
2 votes

Getting a “FATAL: Connection to Cacti database failed” when attempting to install Cacti on CentOS

I've just struggled through this, and there are so many dead-end answers. For me I needed to install both php7.3-intl and php7.3-mysql though yours might require php7.4-mysql. Also I had to hard-set ...
Criggie's user avatar
  • 2,429
2 votes

Why does Windows 7's Resource Monitor indicate 12 Mbps of Network I/O while it also indicates ~10MB/s of Network Activity?

I suspect that the 12 Mbps Network I/O and 0% Network Utilization values between the two tables are instantaneous --i.e., they display the values "right now"-- while the values within the ...
Preston Maness's user avatar
1 vote

How to create a firewall that monitors all traffic

To log http traffic by URL you can go with two methods: 1) Inline: Use SQUID Proxy You can setup a transparent inline Squid Proxy to inspect and forward web traffic. This works by combining the proxy ...
glallen's user avatar
  • 2,204
1 vote
Accepted

Low count of data frames in wifi monitor mode

Both 802.11n and 802.11ac require QOS (WMM, 802.11e), so all data is sent as Data/QOS-Data (type 2 subtype 8) frames nowadays. Data/Data (type 2 subtype 0) is a vanishing relic of the bygone a/b/g ...
Spiff's user avatar
  • 104k
1 vote

Logging traffic through home router per user

On a technical level, yes, it is possible. Indeed, you'd have to use a transparent routing proxy. There's a few ways of doing that, here's two of them: Spoof the MAC address of the CPE in your LAN, ...
Doezer's user avatar
  • 451
1 vote

How to monitor bandwidth on a LAN with consumer hardware?

Usually for this sort of thing you want your monitoring as close to the network source as possible. In front of your router is a great place but i'ts probably not possible in this setup. Most folks ...
Mimp's user avatar
  • 174
1 vote

monitoring and testing Internet of Things devices for security

Being behind a firewall is your first line of defense. Yes, hackers can bypass firewalls in many instances, but at least you have a wall that you can monitor. From a continuous testing standpoint, ...
Godzilla74's user avatar
1 vote

How to find out the URL to which a process is trying to connect to?

There are plenty of tools that can tell you what hosts a process is connected to. Netstat is one, Process Explorer is another. But to find the exact URL? The only way to do that is to use a packet ...
Wes Sayeed's user avatar
  • 13.8k
1 vote

Monitor network activity of TeamViewer connected computer on another computer connected to different network

It's not possible literally - without somehow forcing all traffic for computer(1) through computer(2) - but doing this using TeamViewer would be very inefficient. You can of course install network ...
Marek Rost's user avatar
  • 2,076
1 vote

Tools for monitoring and logging internet connectivity on my home network

Ping would be enough if it is really just about outages. You can use gping which provides a graphical result of the measures. A ping won't affect the traffic. As for alternatives, the question you ...
Doezer's user avatar
  • 451
1 vote

Monitor network trafic between two computers on the same network

You can add a third computer, though do not add it to the switch, as the switch will only send what is needed to each branch. Add it between one computer and the switch. Using an old non-switching ...
ctrl-alt-delor's user avatar

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