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Questions tagged [traffic]

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Get rx/tx bytes per IP address

I defined one vlan which has 3 ip addresses. Now I want to get RX/TX bytes per each ip at any given time. Is it possible to use iptables, ip , netstat commands to get this? I prefer using one of pre-...
Rasoul.A's user avatar
0 votes
0 answers
11 views

Pretesting traffic on a website

I had a php application last year that was working on shared hosting that has 1 GB RAM and 1 CPU core. At the time, there were 200 users using the service and the performance was perfectly fine. ...
islambassiem's user avatar
1 vote
1 answer
129 views

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 ...
Michael Brown's user avatar
0 votes
0 answers
98 views

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 ...
Hanz94's user avatar
  • 1
0 votes
0 answers
22 views

Blocking WhatsApp traffic from a specific Country [duplicate]

How can a country block all WhatsApp traffic from a specific country?
Yaseen Khan's user avatar
0 votes
1 answer
72 views

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 ...
manifestor's user avatar
  • 6,469
0 votes
0 answers
46 views

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 ...
Leonardo Hysesani's user avatar
0 votes
0 answers
40 views

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 ...
fersarr's user avatar
  • 111
0 votes
0 answers
47 views

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 ...
Khaled Hussein's user avatar
0 votes
1 answer
220 views

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 ...
bpleat's user avatar
  • 1
-1 votes
2 answers
276 views

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 ...
Михаил Агафонов's user avatar
0 votes
2 answers
2k views

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 ...
Hamed Zargar's user avatar
2 votes
1 answer
833 views

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 ...
Juan Simón's user avatar
0 votes
0 answers
350 views

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 ...
Billy Cox's user avatar
0 votes
1 answer
120 views

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, ...
whitenoise40's user avatar
0 votes
1 answer
266 views

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 (...
GrafMetrics's user avatar
0 votes
0 answers
90 views

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 ...
Brand Lee's user avatar
0 votes
0 answers
19 views

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 ...
Tolure's user avatar
  • 101
1 vote
3 answers
1k views

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 ...
jackthehipster's user avatar
0 votes
1 answer
334 views

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 ...
dgarg's user avatar
  • 101
3 votes
1 answer
355 views

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
MeMow's user avatar
  • 292
1 vote
0 answers
275 views

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 ...
CodingWolf's user avatar
0 votes
1 answer
270 views

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 ...
user206904's user avatar
1 vote
0 answers
503 views

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....
Robert's user avatar
  • 11
0 votes
0 answers
31 views

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 ...
Peter's user avatar
  • 101
0 votes
1 answer
524 views

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 ...
End Antisemitic Hate's user avatar
0 votes
1 answer
311 views

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 ...
user avatar
0 votes
0 answers
186 views

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 ...
Wilmer's user avatar
  • 101
0 votes
0 answers
42 views

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 ...
Ebin Manuval's user avatar
0 votes
1 answer
224 views

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 (...
DarkLightA's user avatar
1 vote
0 answers
184 views

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 ...
Johannes B. Latzel's user avatar
0 votes
1 answer
66 views

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 ...
KernelPanic's user avatar
5 votes
1 answer
7k views

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 ...
oucil's user avatar
  • 598
0 votes
1 answer
187 views

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 ...
oucil's user avatar
  • 598
0 votes
0 answers
40 views

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 ...
zozo's user avatar
  • 843
0 votes
1 answer
602 views

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 ...
244boy's user avatar
  • 141
1 vote
0 answers
50 views

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 ...
DanielC's user avatar
  • 121
1 vote
1 answer
7k views

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 ...
Mossmyr's user avatar
  • 163
0 votes
2 answers
58 views

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 ...
Dimitrije Vukajlovic's user avatar
1 vote
2 answers
5k views

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 ...
sys_uzer's user avatar
  • 113
1 vote
0 answers
45 views

many connections to one of our website

We are hosting multiple websites with Nginx as an SSL terminator. All traffics are proxied through Nginx to backend servers. There are many connections to one of our websites, netstat shows: # ...
behnam bahadori's user avatar
0 votes
0 answers
49 views

Strange (mail related) traffic on my server

I'm noticing strange traffic on my webserver which is around 50kbps constantly. Doing a (few seconds worth of) tcpdump on the specific ip address, I get this (pardon the huge list): 09:33:02.385238 ...
Zippy1970's user avatar
  • 279
5 votes
1 answer
2k views

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 ...
a66a's user avatar
  • 53
0 votes
0 answers
56 views

Configurable Stateful Traffic Generator Advice

I need a traffic generator tool which I should be able to configure followings; Number of Packets Number of Sessions Number of TCP, UDP packets Average number of packets in a session Average packet ...
No N's user avatar
  • 1
0 votes
1 answer
2k views

Unusual hits in Apache log for localhost site

I have an Apache 2.2 webserver running on Windows 7 with six virtual hosts set up. Domain name A points to ?:/.../urls/1/ Domain name B points to ?:/.../urls/2/ Domain name C+D point to ?:/.../urls/3/...
fgsfds100's user avatar
2 votes
1 answer
2k views

Analyzing traffic by tcpdump between HAProxy server and mariadb

I was testing tcpdump too see the traffic between HAProxy server and mariadb server. These are the results: 23:07:22.328958 00:0c:29:a9:28:a8 > 00:50:56:b0:e0:ea, ethertype IPv4 (0x0800), length ...
user3637971's user avatar
0 votes
1 answer
862 views

Route traffic to the internet through router and Mikrotik firewall

I would like to request your help to understand whether my diagram is correct, at least conceptually. Im trying to set a network environment from almost scratch. We have a fixed IP provided by ISP. ...
sawesa's user avatar
  • 11
0 votes
0 answers
187 views

Establish VPN connection from a client behind a Debian router

EDIT : My searches leaded me to GRE packets : they seem to be exchanged on IP port (not TCP one) 47. It seems to be quite painful to handle it with iptables. So question become : how can I transmit ...
nbonniot's user avatar
  • 127
1 vote
1 answer
73 views

Traffic drop after HTTPS Magento

we have a Magento store, that we switched to https. Now 2 weeks after, we got a drop about 30%... What could be the cause? I followed every step that was recommended. I requested a reindex via search ...
Markelus's user avatar
0 votes
2 answers
254 views

Weird traffic on all interfaces simultaneously. (Linux)

Every now and then, I check my munin graphs on my production server to see if there's anything out of the ordinary going on. Today I noticed a strange thing. Identical traffic spikes on all (8) ...
Zippy1970's user avatar
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