Questions tagged [traffic]
The traffic tag has no usage guidance.
303
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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 ...
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2
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221
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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 ...
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22
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Total Network Traffic of a specific PORT or USER
I want to provide a 'SSH Tunnel' for one of my customers, and I need to know the total network traffic by its PORT or USER.
for example: I will give him/her an access to my server by an exclusive ...
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150
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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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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 ...
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48
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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, ...
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39
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Squid and redirect traffic
I need to set address of my proxy(squid server) and related port to get traffic from FreeBSD or Linux in my browser box.
I have Internet in my squid box.
How do I configure my squid server?
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13
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ec2 document traffic from machine
I want to document all inbound and outbount traffic from an ec2 machine. I want all to be kept on a log on the machine (or on an s3 bucket, nevermind...) basiclly I need a log that sniffs all the ...
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80
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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 (...
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53
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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 ...
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17
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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 ...
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735
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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 ...
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174
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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 ...
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3
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1
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238
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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
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196
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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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180
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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 ...
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450
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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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29
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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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251
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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 ...
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235
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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 ...
user600511
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138
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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 ...
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40
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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 ...
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157
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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 (...
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147
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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 ...
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60
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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 ...
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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 ...
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123
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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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39
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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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321
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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 ...
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46
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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 ...
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6k
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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 ...
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57
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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 ...
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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 ...
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43
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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:
# ...
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44
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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 ...
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977
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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 ...
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39
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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 ...
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1
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1k
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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/...
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1
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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 ...
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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. ...
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163
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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 ...
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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 ...
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2
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239
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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) ...
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1k
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Machine connected to a vpn not reachable anymore from the outside
My raspberry is connected to my lan network 192.168.1.0/24 and it has a static ip. From the outside I can reach it by opening some ports on the ISP router. I have installed an openvpn client on it ...
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128
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TC- HFSC : Can we have TC rule to set classes with minimum guarantee, but no maximum limit?
Can we set a rule where i can specify that my particular traffic will get minimum b/w no matter what, but no max limit if bandwidth is available.
Eg : I have 20 mbps line.
i want to set minimum 5 ...
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3
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7k
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how to prevent image hotlinking in nginx?
I am trying to implement image hotlink protection problem in nginx and I need help. I have a huge issue of my site's images being submitted to social networks like StumbleUpon with a direct link like
...
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227
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How to find out what causes excessiv incoming traffic?
On a simple webserver configuration (CentOS 7) with nginx/apache (reverse proxy setup) I have a lot of incoming traffic on one NIC (eth0).
1. Is there a way to find out what causes it or "where it ...
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894
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Squid bandwidth control with both source and destination
let's say I have three subnets: 192.168.0.0/24 with 100 mbps uplink 192.168.1.0/24 with 100 mbps uplink 192.168.2.0/24 with 500 mbps unlink
I need to limit the bandwith against example.com so they ...
1
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1
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79
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how do I tune for one-day-a-year traffic [duplicate]
I run a site as a service for the statewide high school swimming community. I do this for love of the sport, so I can't spend a ridiculous sum on hosting, etc. Nor do I need to - except for one day a ...
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237
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Why do I have a very high ARP traffic while running linux 4.10.13 with docker 17.09.0-ce?
I have a linux machine set up with docker that is running around 40 containers.
I've noticed that the ssh connection feels really slow and all externally available services are laggy.
On the ...
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