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Questions tagged [traffic]

QAs about traffic within the meaning of operating systems and computer science.

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putting `nload` output into a file

I want to generate a simple report of total network usage into a text file.(amount of total used traffic) I searched a bit and I found nload software, but when I write this command in the terminal: ...
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57 views

How to fix "Invalid Handle Error" in TC command

Does someone know how can i fix "Invalid Handle Error" in TC command. did i choose wrong handle ID? tc qdisc del dev $NETCARD root handle 1 tc qdisc add dev $NETCARD root handle 1: htb ...
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1 vote
1 answer
125 views

How to setup Linux machine to act as a Router

How to setup Linux machine to act as a Router which is responsible for distributing internet traffic to other devices connected to switch. I want to use this scenario in order to assign Ip-based ...
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0 answers
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How to apply IP-Based Bandwidth limiting in Linux

i have a linux machine which connected to a layer 2 edge Switch , how can i setup this linux machine to act as firewall or router to do ip-based or macAddress-based Bandwidth limiting for other nodes ...
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0 answers
25 views

Network traffic for last day in specific format

I want to get network traffic stats for the last day in a specific format. tx[some number in kbytes]rx[some number in kbytes] I tried a lot of solutions, but each one has its own goods and bads: ...
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1 answer
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netem how to do delay for 2-3seconds of all packets for 50-300ms once in 3-10 minutes

I'm using netem to do traffic delays. For my testing it is required to perform slightly odd delays. I need introduce a delay 50-300ms to all packets TCP/UDP for 2-3 seconds once in 3-10 minutes. I.e. ...
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1 vote
0 answers
26 views

ID process making HTTP request

My firewall is detecting my ubuntu server calling a URL on port 80 sporadically. I'd like to ID the process making the callout, but the connection is always gone by the time I can run a netstat. A lot ...
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0 answers
270 views

VPN Killswitch is blocking my internet (UBUNTU 20.04)

I uninstalled a VPN while my network was connected to it. But because of its Killswitch I can't connect to the internet. I deleted the saved vpn Killswitch network located in Network manager/system ...
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57 views

Zero Traffic on while running pipeline application in dpdk

I have two Virtual Machines. Both of them have their port bridged. On one VM I run Pktgen DPDK to generate traffic. On the other VM my goal is to run DPDK's pipeline application. Now When I run ...
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1 answer
69 views

Module Not Found error while running a program in NeST software

I tried to run with $ sudo python3 p2p.py But it shows an error in my machine . ModuleNotFoundError: No module name nest
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1 vote
1 answer
216 views

Pktgen Dpdk different socket ID on different cores error

I am facing the error " port 0 on socket ID 0 has different socket ID on lcore 1 socket ID 1" whenever I run Pkt gen Dpdk. I am running this on Host Machine. Pktgen Dpdk runs fine when I run ...
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Traffic Problem - ubuntu server

I am using (Ubuntu server) as a router, I have more traffic than (1 Giga) when I pass the traffic it decreases to about 400Mbps and when I run (bmon) it shows a "Core dumped" message. I only ...
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1 vote
0 answers
1k views

How to mirror traffic on one interface to another?

I'm basically trying to implement a tap-interface on wlan0 interface (Ubuntu 18.04), i.e., mirror every packet going through wlan0 (incoming and outgoing) to another interface (tap0). I've got tap0 up ...
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-1 votes
1 answer
725 views

UFW Rule - Deny Routes

I want to deny all outgoing traffic except to a specific address/address range. I attempted: $ ufw default deny outgoing $ ufw allow from x.x.x.x to any $ ufw allow to x.x.x.x from any However, ...
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2 votes
0 answers
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What do the numbers on the speedometer 2.8 screen mean?

I'm running speedometer 2.8 which has been recommended in various answers on this site to monitor network utilization. I have read the manual page and have searched on Google but I am not seeing it ...
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8 votes
0 answers
742 views

NetHogs showing suspicious (outgoing) traffic to random ports from root on Ubuntu 16.04

Using NetHogs on an Ubuntu 16.04 (web) server, i.e. on a machine where no consumer applications or web browsers are installed, besides traffic that is to be expected (HTTP and SSH) PID USER ...
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0 answers
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Packet Loss Counter

While transmitting packets from multiple protocols, is there a way to track packet loss on both the server and the client side in UDP, TCP, Multicast and ICMP?
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1 answer
122 views

Connecting to server which is conncet to VPN

I have a server and nordvpn account. What I want is that I want to conncet my server with ssh and then in my server I want to conncet my vpn. I want to use my server with vpn. I install openvpn to ...
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1 vote
1 answer
764 views

mqprio qdisc not working

I am using ubuntu 4.15.0-43-generic, I am trying to run the mqprio qdisc with this command # tc qdisc replace dev ens4 handle 100: parent root mqprio num_tc 3 \ map 2 2 1 0 2 2 2 2 2 2 2 2 2 2 2 ...
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2 votes
1 answer
585 views

Why I get error Failed to execute child process "/sbin/ifconfig" when opening Nutty?

I am in Ubuntu 18.04, I installed Nutty using command sudo snap install nutty while trying to open using sudo nutty I got this error: [_LOG_LEVEL_WARN 03:18:10.669274] nutty.vala:1248: Error ...
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  • 553
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1 answer
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How to monitor Network Traffic at a particual port number let "8443"

To measure network traffic, I explored various ways like ntop, tcpdump, iftop, bmon. But, Exact network traffic for port number 8443 is not resulted by any of them. Please suggest how to measure ...
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1 vote
0 answers
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Ubuntu VM Capture Port

I have been working for hours trying to figure out how to to set up a capture port on an extra Ubuntu 16.04 server port. Summary: Host machine, Windows 7, has 2 ports. One port is for accessing the ...
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1 vote
0 answers
55 views

Help with tracking data usage by connection/network (SSID) rather than interface (MAC)

I need to be able to track the traffic of my wireless interface by "network". I move around a lot. Some of the places I work have usage limits, other do not. I always connect via the same interface. ...
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1 vote
0 answers
382 views

How to redirect traffic between VPN

I have many interfaces and subnets (local and vpn) on ubuntu router but i need to remap traffic from openVPN to IPSEC tunnel trough defined subnet destination ip is 1.2.3.4 ipsec tunnel accept ...
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2 votes
0 answers
981 views

What is this UFW rejected traffic that I'm seeing?

I know that 192.68.1.1 is my router and I know that 224.0.0.1 is a broadcast address and I've deduced that 192.68.1.14 is my old Roku. I don't see any mention of what port is being hit. I do use DDNS ...
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1 vote
2 answers
7k views

Monitor everything goes in and out of my machine

Hello I want to achieve as much security as I can on my Ubuntu machine so I want to check for suspicius connections.Any idea how to monitor network traffic on my pc? incoming and outgoing both.I also ...
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2 votes
0 answers
440 views

Vnstat showing large amount of traffic

I am using lubuntu 16.04, and have vnstat to monitor my traffic, since in our students home we have a limit of 30Gb per month. Everything was fine with the program till yesterday when I tried ...
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0 votes
1 answer
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tcpdump, odd packet records

I was checking out tcpdump and this is what i found. 14:27:13.244527 [|ip] It is a record that as you can see contains no information except a time stamp and those brackets with |ip. while a normal ...
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1 vote
0 answers
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NTM on Ubuntu GNOME 16.04

I have just installed NTM - Network Traffic Monitor on my Ubuntu. I've set the wlp3s0 interface, the one that i've seen running ifconfig. But application has just crashed and now, running NTM from ...
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-1 votes
1 answer
115 views

Encrypt internet traffic on Ubuntu VM

Is there some way to encrypt internet traffic on Ubuntu VM so that tools installed on host machine could not see it/read it?
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  • 151
1 vote
0 answers
1k views

How do I route all network traffic through OpenVPN using network manager in Ubuntu 15.10?

I am trying to connect to my university's VPN on a 15.10 machine. When I do it via the command line, all the traffic is routed through the VPN: That's what I want. When I load the same OpenVPN ...
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1 vote
3 answers
2k views

How to setup PC router to monitor LAN traffic?

I'm sure I can turn a pc or a raspberry pi into a router. I'm just wondering if I can use this router to monitor traffic? I mean say I have four terminal devices owned by different person in my home,...
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0 votes
2 answers
2k views

Promiscuous mode not working with ubuntu and wireshark

I am running Ubuntu Linux and have installed wireshark on it. I can see the incoming and outgoing traffic just fine. Now I want to see the traffic from other devices which are on my LAN. So, I did: ...
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  • 183
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1 answer
176 views

Traffic meter [Xubuntu 15.04]

is there any utility or application that can measure my traffic? I googled it and searching in Ubuntu software center, but i didn't find any.
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6 votes
4 answers
9k views

Ubuntu 14.04 spying? suspicious traffic at boot

Brand new install of Ubuntu 14.04. After I disabled all the web searches in Unity bar (all that I could find, amazon, various lenses ect.), I noticed that when Ubuntu boots there is suspicious network ...
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  • 129
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1 answer
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Monitor network load on ubuntu server 14.04

I wanted a lightweight tool so that I can remotely monitor the network load on my server(apache2) I want to know the bandwidth usage the IP addresses of the traffic Any tool in mind guys?
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0 votes
1 answer
509 views

Traffic shaper: sfq external classifier not working as expected

I have an Ubuntu 14.04.1 LTS with 3.13.0-44-generic kernel. My traffic shaper rules: # Add disciplines for DL device tc qdisc add dev $devDL root handle 1:0 htb default 12 # Add classes for DL ...
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0 votes
1 answer
864 views

Ubuntu 14.04.1 LTS: tc filter rule hits not shown

Have a Ubuntu 14.04.1 LTS. There is no rule hits stats in the output of tc filter show command: tc -s -d filter show dev eth0 filter parent 1: protocol all pref 1 u32 filter parent 1: protocol all ...
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0 votes
1 answer
761 views

Monitor network traffic usage per user by terminal?

Can you offer me some tools with which i can monitor traffic usage per user in WiFi/Ethernet network per user? And also will be good if i can see PC's name.
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2 votes
4 answers
7k views

Is there any linux in built application or any method to find the network usage(data usage) of the internet connection?

Is there any linux in built application or any method to find the network usage(data usage) of the internet connection? I know there are many softwares that can be installed into os for this purpose. ...
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3 votes
0 answers
1k views

route traffic throught openvpn

Before I ask my question, let me clarify for dear moderators that I've searched a lot for a solution, but none of the questions/answers on Askubuntu (and other Stackexchange sites) addresses my ...
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  • 223
1 vote
1 answer
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How to block all traffic except for browsing?

Sorry for the paranoid question but is it possible to block all connections except for Firefox and updates? And if so does someone got a terminal code for it?
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1 vote
1 answer
189 views

Indicator, notifier and blocker of Internet traffic

Which traffic monitor applications currently available can do the following things? (or some of them, in the worst case) start recording how much Internet data is downloaded and uploaded with a ...
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  • 247
0 votes
1 answer
1k views

why does transmission bittorrent client still send and receive with zero download/upload speed!

this is my network traffic with vnstat: ^ r | r ...
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7 votes
1 answer
6k views

Why do Ubuntu Servers connect to likho.canonical.com:80?

We have some Ubuntu 12.0.3 servers in our network and I can see several denies per day on our physical firewall. The Ubuntu servers are attempting to connect to 91.189.91.15 (likho.canonical.com) ...
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4 votes
2 answers
5k views

How to capture https traffic

I am trying to capture the requests of my android emulator. I want to know the data used by my android app. I tried various ways which didn't work. I am trying to do that using the emulator now. I ...
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2 votes
1 answer
683 views

Is the Ubuntu 12.04 server support linux kernel version 2.4.20?

because I will use HTB for ubuntu server 12.04.
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1 vote
2 answers
954 views

Is there any solution to do per process based traffic shaping in Ubuntu?

is there any solution to use per process basis? I mean when I do HTTP download, I can't browse web. It's no use to prioritize traffic based on protocol in this case. So, what I need is to give ...
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1 vote
1 answer
473 views

Ubuntu scanning internet traffic?

Can Ubuntu scann all internet traffic in my office? I have 10 employees with Windows desktops and I would like to know which internet websites are they visiting. I have Ubuntu desktop 13.04 at this ...
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1 vote
1 answer
1k views

block all Torrent traffic via dansguardian

i was wondering how to block all Torrent traffic via dansguardian
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