Questions tagged [traffic]
The traffic tag has no usage guidance.
308
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fedora default traffic monitor tool
On a fedora server i have access using a ssh connection. As a regular user, how can I see what traffic is involved into the server?
I don't have root rights, and I'll like to learn from the default ...
3
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1
answer
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unable to block DHCP and other traffic on INPUT chain
Here is the output of my iptables-save command. The last rule and default policy is to DROP any packets that dont match any thing.
Generated by iptables-save v1.4.9 on Wed Aug 3 21:00:05 2011
*filter
...
CommunityBot
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1
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54
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DNS Configuration for Azure Load Balancer with Public IP
I'm configuring a load balancer in Azure to distribute traffic to backend VMs for my web application (most likely just a singular VM actually). I'm a bit confused about the DNS setup. Here's what I ...
- 31
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vote
2
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Monitor all requests and responses originating from XAMPP's apache server
I am using Windows 10 and XAMPP to do local php development. I need to capture traffic originating from the apache server XAMPP uses but I can't figure out how. I'm using Fiddler and I can see my ...
CommunityBot
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0
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UFW blocks traffic despite there is an allow rule
I have Ubuntu server with OpenVPN server running there.
IP addresses as follows:
enp1s0: 192.168.3.67/24
tun0: 172.18.37.1/24
OpenVPN is configured so that devices behind the VPN client are ...
- 2,020
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1
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Forward Between interfaces On Mikrotik
im having a trouble
ive a mikrotik router with 2 interfaces up ( let's call lan1 and lan2 )
Lan 1 has the IP 192.168.100.1
lan 2 192.168.0.32
Lan1 the other side of the wire goes to a cisco wich IP ...
CommunityBot
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0
answers
22
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Blocking WhatsApp traffic from a specific Country [duplicate]
How can a country block all WhatsApp traffic from a specific country?
26
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10
answers
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Linux: How to measure daily/montly network traffic?
I need to keep statistics of daily network traffic for a linux machine (CentOS 5).
Is there a way to do it using standard/native tools or utilities?
Or do I have to dowload special software for that?
...
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50
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7
answers
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How can I identify which processes are generating UDP traffic on Linux?
My machine is continously making udp dns traffic request. what i need to know is the PID of the process generating this traffic.
The normal way in TCP connection is to use netstat/lsof and get the ...
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1
answer
69
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Daily overview of traffic with information on what processes consumed how much of the traffic on a Linux server
By the end of the day (or week/month) I would like to have an overview of all processes which used the network with information about how much traffic was generated by each of those processes for that ...
- 2,594
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1
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Wireshark - Capturing Packets on Multiple IP Address (FIlter)
I'm looking for the syntax to do a capture filter on Wireshark, by capturing the traffic on several (specific) IP addresses. I understand how to capture a range, and an individual IP address. However, ...
- 6,481
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41
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How should I distribute outgoing traffic load from a single server to multiple servers?
I have an app running on a VPS.
My server sends HTTP requests to an external API at a very high rate. This has caused me to exceed my provider's outgoing traffic limit.
My search on the internet has ...
0
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0
answers
38
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need help discovering unknown referrer fgbel_fzbvy
Every week I get some traffic from a mysterious referrer that I know nothing about: fgbel_fzbvy. I would guess that it's a bot, but I can't find any information about it. Does anyone out there have ...
- 111
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46
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Top IPs used output traffic for last month - Debian
I have server running Debian 11 and it is a webserver, I need to know in a specific period what is the IP that utlize more traffic out from the server, I find some tools like iftop and vnstat, but I ...
4
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1
answer
4k
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How do iptables work with NFQ in terms of traffic shaping in snort?
I'm trying to understand how iptables and NFQ work together with snort.
The reason that I ask this is because from what I understand snort can be set to IPS via NFQ but if you have iptables there ...
CommunityBot
- 1
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1
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187
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How to tell if a switch is forwarding LLDP traffic
How can I test if a switch is forwarding LLDP traffic?
(an engineer for my router's company said that most switches do, and can cause problems for their router, so I'm trying to chase this; another ...
- 11.7k
-1
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2
answers
248
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Route all traffic (except port 3336 and a few more) from eth0 to specific ip
How can I route all incoming traffic from eth0 interface to ip 10.8.0.5 (VPN tunnel)?
I need to forward incoming traffic except port 3666, to specific ip on ubuntu 22.04 machine.
In future list of ...
0
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2
answers
2k
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How to view total traffic usage of each user in ocserv
I'm using ocserv as VPN server in my company on ubuntu, and I want to view how much traffic each user is using. Users are set in ocpsswd file. Do ocserv have this feature or any library I can use? As ...
2
votes
1
answer
766
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Linux Traffic Control: What is the difference between qdisc multiq and mq?
By default Linux creates a qdisc mq. I am configuring it on my computer to change some parameters but I found that there are 2 qdiscs that seem to be the same: mq and multiq.
I can't find any ...
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322
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HTTPS traffic not working, but http traffic does
I am running Microsoft Windows Server 2022 in an AWS EC2 instance with IIS running on it. I have an SSL certificate installed and bound to my website, but when I try to reach the website, it says that ...
0
votes
1
answer
111
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Monitor outgoing specific traffic
I have kinda of an idea but I want to consult. I was following this guide for finding out which php processes spawn outgoing brute force attacks. I found the culprits everything is working fine.
Now, ...
- 9,294
3
votes
4
answers
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openVPN Mac(Tunnelblick) all traffic over VPN
The problem is that we want to use openVPN here as default VPN Server. Now we have the same problem like everytime. On Windows all works fine but on Mac we have problems with the routing.
When you ...
- 101
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1
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250
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Understanding dropping of packets to fight against an DDoS Attack
I always wondered how big tech companies could fight against DDoS Attacks reaching nearly 1tbps+. From my understanding traffic can't just disappear so even if I drop all e.g udp packets via iptables (...
- 886
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88
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Routing all the client traffic from OpenVPN server
I have set up OpenVPN on a server. I am able to connect to OpenVPN as a client. I want to route all the client traffic through the VPN. I have read all the documentation and tried to follow it but ...
0
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0
answers
19
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How to set up a server to allow the root user to track down historical outgoing requests?
I woke up this morning and found an unexpected outgoing spike in traffic from my virtual server.
What commands/settings should I have been using to allow myself to track down the who/what initiated ...
- 101
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3
answers
1k
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How to monitor outbound bandwidth usage in Linux?
Currently I use vnstat to monitor my bandwidth usage. What I want to achieve is to get data for making the decision whether to stay in a more expensive but unlimited cable based plan, or to switch to ...
- 111
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1
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1k
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Best way to log internet traffic for office network via remote IP
We have a network of about 40 machines running either Win XP or 7 in our office via LAN switches into 1 x Netgear Router (WNDR3700). We have noticed recently that our local network has been added to ...
CommunityBot
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323
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why nethogs & iftop numbers for sent traffic are not correlating
I am trying to understand the root cause of my high network egress..
GCP network monitoring shows approx 600 KB/s and bills accordingly If I do iftop on my VM, the sent (Tx) traffic sort of correlates ...
- 113
3
votes
1
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344
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Why is my server using a well known port as source port
Is it normal that my server is requesting 8.8.8.8 dns with 22/udp as source port? How can i get it to use unregistered ports only
- 6,003
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271
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Traffic won't go through Remote Router
I am currently trying to deploy a Server which is supposed to connect via a deman-dial in connection to a different companies network.
The demand dial in connection has been set up on Windows Routing ...
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263
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how to limit traffic usage per user?
we have a server with four users with limited 60TB in/out traffic per month, but we're not splitting the cost evenly and we are wondering if it is possible to limit traffic for each user, based on his ...
- 141
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497
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Iptables Forward All traffic to different interface except local inter-lan
I have Two LAN
Local LAN: 172.30.30.0/24 with gw 172.30.30.254
Remote LAN : 192.168.2.0/24 with gw 192.168.2.1
both lan can communicate and ping each other devices.
i have introduce new machine 172.30....
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0
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31
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Centos 7 server traffic blocker
Sometimes my website is lot of traffic and looks it is very slow. Log details can see someone ip address do lot of traffic to server. I need reboot my server so speed come back to normally.
It is ...
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1
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1k
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Port level traffic monitoring (with graphs)
I'm looking to monitor traffic (incoming, outgoing and total monthly) on a few ports (mostly TCP) and I've done a ton of Googling around and everything leads to software I either can't manage to use, ...
CommunityBot
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Track torrent traffic in shorewall
I use shorewall to configure my firewall. Is there anyway to track torrent traffic using shorewall accounting?
CommunityBot
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1
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497
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Are firewall logs filled with incoming SSDP requests typical for networks with a Windows 7 box?
While reviewing firewall logs that were sent to me from a Windows 7 box (the box is not a server) on a tiny network, I saw thousands of incoming SSDP UDP entries. The SSDP entries were nearly ...
- 111k
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1
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298
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Can missing HTTP referrer's identify web crawlers?
I am currently trying to analyze the traffic of a website.
Besides specifics regarding the requested resource and timestamps,
the tracking system only provides the request's HTTP referrer.
In most ...
- 241
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votes
0
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179
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Can I route traffic to a connected VPN based on a given hostname?
The company I work for (small startup) has setup a VPN to add an extra layer of security to the services we connect to (say, for instance a Wiki). We, the employees, work from home and connect to the ...
- 101
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0
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42
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BigBlueButton getting unusaul traffic
We are running a bare-metal server which can handle 400 concurrent video conferencing users. We are using BigBlueButton application for video conferencing. It was running smoothly for the past 6 ...
- 101
0
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1
answer
214
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Cost-wise, what's the best approach to hosting a very high traffic server?
I have a server that generates a high traffic amount from unique content (live video chat), and need to be able to handle UL traffic of about 500-1000 TB per month, but have relatively low CPU needs (...
- 6,003
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How can I get the current network in/out values of any NIC of a VMware ESXi host server?
I am aware that IF-MIB provides input and output values for any NIC of a target device via SNMP. Recently a sysadmin compared the values of a specific NIC of an ESXi host server in our VCenter with ...
0
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1
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64
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What is this kind of continuous traffic generation against production called?
Traffic to our service is not entirely predictable. To help keep the service slightly over-provisioned and to provide advance warning of any degradation resulting from an increase in traffic, we ...
- 33.3k
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180
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Can I limit the scope of ntop to only monitor a specific connection?
I need to be able to track client data usage between their VM and an S3 compatible object storage bucket (accessed via https). I've installed ntopng community edition on the VM and right now it's ...
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1
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Where are nftables counters logged/stored, and how long do they persist?
I'm attempting to track the total data being transmitted from a specific set of IP addresses (both IPv4 and IPv6) using nftables with a named counter on the rule. My goal is to be able to track this ...
- 2,497
5
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1
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Using tc to decrease bandwidth to a specific destination address
I am trying to find the shortest path between two hosts H1 and H2 using Dijkstra code. Setting a condition in one of the switches on that path.
the condition is: if the packet sending to H2 then ...
0
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0
answers
40
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Internet packages went crazy
So... I have a router (wireless, ASUS RT-N18U), connected to 4 pcs via cable and 1 tablet wireless.
After I noticed some performance drops in my network speed, I checked the traffic manager. The ...
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583
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Can PRTG monitor IP traffic?
We often use MRTG For Windows to monitor interface traffic.
Now there is an additional requirement: can I use MRTG to monitor IP traffic? If the 10.10.10.0/24 goes through the interface, can I ...
- 141
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49
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Monitor Windows Server network data transfer [duplicate]
I would like to monitor the amount of data transferred (Network Out) in a Windows Server. The traffic is composed mainly of files downloaded from IIS.
Is there some software or Windows Feature that I ...
- 1,102
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Is there a way to listen to all traffic on my router, using e.g. Wireshark or tcpdump?
I have a crazy stupid problem driving me to an early grave and I'm trying to trouble shoot what the problem is.
Is there a way to listen to all traffic going through my router, including dropped SYN ...
- 111k
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2
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Does me hitting the serverfault site during routine maintenance cause the server/sysadmin team issue?
Not sure if this belongs here, but had the thought while trying the hit Stack Overflow during routine maintenance.
Does me hitting stackoverflow.com when its down cause issues on the servers? If ...
- 51.9k