Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [traffic]

The tag has no usage guidance.

-1
votes
0answers
15 views

Networking Traffic Replay Simulation

I have ten physical workstations as part of an exercise connected to a switch, on the switch there is a network tap for traffic analysis. I want to replay captured TCP traffic between the machines ...
0
votes
1answer
53 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. ...
0
votes
0answers
35 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 ...
1
vote
1answer
49 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 ...
0
votes
0answers
16 views

Calculate amount of traffic a server can handle [duplicate]

Is it possible to calculate the amount of concurrent users/clients a server can handle based on specifications given by host? The software running on server would be a very basic wordpress ...
0
votes
2answers
109 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) ...
0
votes
2answers
96 views

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 ...
1
vote
0answers
27 views

Packet Loss Analysis of a UDP upload in dependence of shared link capacity

I consider two hosts: Host1 is sending UDP packets (between 1000 and 1500 Bytes) to Host2 and at the same time Host2 is sending UDP packets (also between 1000 and 1500 Bytes) to Host1. The ...
0
votes
0answers
20 views

Traffic Routing to DR Site in case of a disaster

We are working on a project where we are deploying a HyperV cluster with a bunch of Virtual Machines. This is the primary site of the client and has about 200 Computers accessing these VMs 24X7. This ...
0
votes
0answers
8 views

Measure traffic speed during some period

I have two web services which are located on different machines. I would like to measure the following metrics during 7 minutes of intermittent data exchange between to endpoints: Total KBytes sent ...
1
vote
1answer
33 views

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 ...
1
vote
3answers
494 views

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 ...
1
vote
0answers
38 views

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 ...
0
votes
1answer
155 views

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 ...
0
votes
0answers
15 views

Server to handle 30.000 req/s [duplicate]

I want to develop a minimal API on GO. The only thing this API will do is receive two parameters "client_id" and "timestamp" and save this into a database (I don't care which database). I'd like to ...
0
votes
0answers
38 views

iptables configuration in host level

I have this iptables configuration in my ubuntu virtual machine (206.16.193.228) that redirect all traffic coming to port 80 to the proxy (150.70.3.15) and it works very well: iptables -t nat -A ...
1
vote
1answer
57 views

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 ...
1
vote
1answer
83 views

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 ...
1
vote
1answer
175 views

tcpdump - how to track the source of requests made with ephemeral/dynamic ports

I'm trying to identify the network traffic between multiple backend microservices running on the same server. (they make some rest http calls to each other) Unfortunately, when i use tcpdump, the ...
0
votes
0answers
50 views

OpenVPN not redirecting all traffic to VPN tunnel when local network is 192.168.x on both sides [duplicate]

I've setup a OpenVPN server using tun and udp and enabled the options for redirecting all internet traffic and pushing lan to clients. In the HOST NETWORK The OpenVPN Server is configured to dish out ...
0
votes
1answer
358 views

how to scale a high traffic server? [closed]

I'm very confused on techniques for scaling servers Say you had one high traffic server running on one computer with one 12 core CPU, and one server for a database. For a while that would work, but ...
0
votes
1answer
2k views

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 ...
0
votes
3answers
271 views

Current Network Load on windows/linux

Is this possible to know via command line the network load on remote linux/windows machine . Like we can get cpu load i.e. cpu is 75% used.
1
vote
1answer
9k views

Mikrotik - Add second WAN IP and route specific traffic

After 20 pages of SO results about Mikrotik and some more google results, I'm come here, down on my knees to request some enlightment. I have a network with static IP and some public IP (248 mask). ...
0
votes
0answers
59 views

How to display traffic information in a parsable format?

tcpdump is my go-to tool to analyze traffic (together with Wireshark when I want an easier review of the pcap file). This fantastic tool fails however to deliver a predictable and easy to parse ...
1
vote
0answers
282 views

Netsh trace vs PEF trace cmdlets vs NetEvent cmdlets

I am playing with capturing my network traffic and came across two different MS commandline tools that allow doing this: a well-known netsh tool, recently equipped with powerful capture switch a ...
1
vote
0answers
23 views

Can php+mysql scale to handle 5000 request per second? [duplicate]

I have web application build with php and mysql, and I except 5000 requests/sec in the first 6 months. and I register a dedicated server with CPU intel Xeon 4 cores 3.3GHz, 16G ram, Uplink 1000Mbps, ...
3
votes
2answers
784 views

Process names in MS Message Analyzer

I am trying to set up the Message Analyzer viewer exactly like it is explained in this reference, but instead of steady process names I got some weird numbers, both in ProcessName and ProcessID ...
-1
votes
1answer
48 views

Connect two VM's in a data center

I asked my hosting provider if I can use internal data traffic over http between two virtual machines I run with the same provider. The short answer was, that this is not possible and the machines ...
0
votes
0answers
229 views

OpenVPN: possible to block multicast traffic in bridged mode?

I have a bridged-mode VPN using two DD-WRT routers connected to cellular modems. To avoid excessive bandwidth usage and fees, it would be nice to block multicast traffic originating from Allen ...
0
votes
1answer
527 views

Monitor Traffic of virtual machines on Vmware ESXI Server

we have some servers in traffic costing datacenters, and we offer vps services on vmware esxi, we used prtg to monitor vms by enabling snmp on server and passing their ip to PRTG. by users are able to ...
3
votes
0answers
530 views

How to estimate storage and traffic used for docker images in AWS ECR?

I'm trying to esimate monthly cost of using AWS ECR. It will consist of: outgoing traffic cost (downloading images) and storage cost (storing images in ECR). Let's assume, that: We are building some ...
0
votes
1answer
221 views

Separate corporate network traffic and internet traffic using two network interface

I would like to route any internet traffic to a VPN connection, but route corporate traffic to the ethernet card. I'm a newbie in context of routing. I've found a post very close to this topic How to ...
0
votes
2answers
172 views

monitor traffic at the scale of millisecond

I have several linux servers running Ubuntu 14.04, and turned them into a Spark cluster. At this point, I want to measure the network flow between the servers, at the scale of milliseconds, in order ...
1
vote
0answers
1k views

When add filter in tc have a “RTNETLINK answers: Invalid argument, We have an error talking to the kernel” error

Need help witch tc on debian 8. I add class rule like this "tc class add dev p514p1 parent 1:0 classid 1:0xA486 htb rate 20480Kbit ceil 102400Kbit quantum 2000 mtu 3000 burst 15k" and then add filter ...
0
votes
1answer
2k views

How reliable is /sys/class/net/eth0/statistics/rx_bytes for bandwidth statistics?

I found this script at https://github.com/Cosmologist/collectd-network-bandwidth-usage. <Plugin exec> Exec user "/tmp/exec-network-bandwidth-usage.sh" "eth0" </Plugin> It runs a ...
0
votes
1answer
83 views

Strange traffic on my dedicated Kimsufi Debian 8.4

I own a Kimsufi dedicated server since more than one year, and recently I decided to completely re-install the OS. I installed Debian 8.4 Jessie. I installed all the updates needed, changed my SSH ...
2
votes
1answer
152 views

AWS - How to limit outward traffic amount? [closed]

I want to exploit the AWS free tier to learn and do some personal projects. However what worries me is the bandwidth limitation. Specifically, the AWS free tier FAQ states that "15 GB of bandwidth out ...
3
votes
0answers
101 views

ifconfig output different for non-root user

we use a montoring system to capture network traffic. the output as root user is fine: eth0 Link encap:Ethernet HWaddr 00:1E:67:E6:D6:FE inet addr:149.56.19.13 Bcast:149.56.19.255 ...
1
vote
1answer
372 views

munin not showing traffic of interfaces pfsense 2.2

I'm trying out some systems and plug ins for monitoring bandwidth I came to Munin to monitor the interfaces of my PFSense 2.2.6 installing Munin was very easy and on normal debian VM's I could see ...
-2
votes
2answers
92 views

ubuntu server 14.04 LTS unusual outgoing traffic

I have virtual private host with ubuntu server 14.04 LTS. On this server, we serve web service. We run apache2 and tomcat as web server. apache2 + django1.8 and tomcat8 recently, I observed the server ...
0
votes
1answer
82 views

Traceroute / Routing of a IP

so i just wondered, how i can route the whole traffic from server A through server B, so the traceroute looks like this: Server A IP is 33.33.33.33 and Server B IP is 55.55.55.55 1: 1.1.1.1 2: 2.2.2....
1
vote
2answers
115 views

Increasing firewall throughput but constant traffic

I can't understand, why the firewall throughput of my server is significant increasing during the last few days while everything else, including traffic, remains on it's normal level. What scenario ...
0
votes
0answers
225 views

high outgoing traffic on WAN port, but small trafic on LAN port in ZyXEL router

I have VPN with two routers (ZyXEL) connecter in different places. It worked fine until yesterday, both routers have high outgoing traffic (maximum from provider). In Port statistics I can see, that ...
-2
votes
2answers
39 views

How the Traffic Classes get defined

I often come across in networking related literature the term 'traffic class'. And it looks like it is platform specific, sometimes they talk about 8 traffic classes, sometimes about 64. 1) Is this ...
0
votes
0answers
404 views

Diagnosing high Network Out (Bytes) by MySQL instance

I have an EC2 instance (r3.xlarge) with only MySQL running on it. At some points in time, this machine sends a sustained amount of information (at almost a rate of 400Mbps) for about an hour or more (...
2
votes
1answer
109 views

Prioritize traffic going to different interfaces

For example, we have regular clients sitting on wlan1 and Bittorrent client sitting on eth2. They access Internet via eth1. Bittorrent download traffic should be given lowest priority. So, that ...
1
vote
1answer
349 views

Getting heavy traffic from random IP addresses

Digital ocean closed my droplet dude to have traffic on droplet. I made a new droplet(instance) and I am facing the same issue again. My nginx access.log is full of random ip address trying to make ...
1
vote
1answer
41 views

limited connectivity at end nodes

I am running a campus wide network of a University and experienced a very unusual scenario for my network. The problem is two folds and therefore i would like to explain that separately after briefly ...
1
vote
2answers
59 views

Routing multiple servers' traffic over another

I have multiple servers (both Windows and Linux) running in different locations. I would like to be able to route all the traffic of those (100mbit) servers over a 1gig connection in a different ...