Questions tagged [traffic]

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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 ...
Abdulrahim safi's user avatar
1 vote
0 answers
277 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 ...
antesoles's user avatar
  • 165
0 votes
1 answer
973 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 ...
Matteo Fabbroni's user avatar
1 vote
1 answer
85 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 ...
Eddie Rowe's user avatar
1 vote
1 answer
268 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 ...
Matyas's user avatar
  • 113
1 vote
1 answer
578 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 ...
MikaelW's user avatar
  • 111
0 votes
0 answers
172 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 ...
rboy's user avatar
  • 101
1 vote
1 answer
1k 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 ...
Jamal H's user avatar
  • 119
2 votes
1 answer
7k 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 ...
Alekz93's user avatar
  • 21
0 votes
3 answers
515 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.
Salman Raza's user avatar
1 vote
1 answer
24k 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). ...
LordNeo's user avatar
  • 113
0 votes
0 answers
196 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 ...
WoJ's user avatar
  • 3,657
1 vote
0 answers
452 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 ...
Suncatcher's user avatar
1 vote
0 answers
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, ...
Abdulkareem Mohammed's user avatar
2 votes
2 answers
2k 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 ...
Suncatcher's user avatar
-1 votes
1 answer
122 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 ...
ulrich's user avatar
  • 99
0 votes
0 answers
509 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 ...
Ryan Griggs's user avatar
  • 1,013
0 votes
1 answer
1k 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 ...
atige's user avatar
  • 1
7 votes
0 answers
2k 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 ...
rustam's user avatar
  • 81
0 votes
1 answer
2k 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 ...
deemon's user avatar
  • 1
0 votes
2 answers
617 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 ...
user135939's user avatar
2 votes
1 answer
6k 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 ...
ujjain's user avatar
  • 4,033
0 votes
1 answer
137 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 ...
Scaraux's user avatar
  • 129
3 votes
1 answer
283 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 ...
Norsul Ronsul's user avatar
3 votes
0 answers
173 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 ...
JLW's user avatar
  • 31
1 vote
1 answer
633 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 ...
Roel's user avatar
  • 33
-2 votes
2 answers
121 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 ...
mahmoud's user avatar
0 votes
1 answer
98 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....
0x0b's user avatar
  • 1
1 vote
2 answers
170 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 ...
Hubert Schölnast's user avatar
0 votes
0 answers
330 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 ...
Francis's user avatar
  • 101
-2 votes
2 answers
138 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 ...
Mark's user avatar
  • 259
0 votes
0 answers
731 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 (...
siliconpi's user avatar
  • 1,817
2 votes
1 answer
221 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 ...
midenok's user avatar
  • 173
1 vote
1 answer
439 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 ...
Praveen Singh Yadav's user avatar
1 vote
1 answer
51 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 ...
Omer Ali's user avatar
1 vote
2 answers
71 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 ...
mti_'s user avatar
  • 13
0 votes
0 answers
2k views

How to purge roaming credentials from AD user objects?

Background Due to low-budget constraints we are using roaming credentials instead of smart cards in our environment. Problem Now we have recognized that the relevant AD user attributes became ...
Matthias Güntert's user avatar
0 votes
1 answer
3k views

how can I identify network traffic that is blocked?

I have an app that is waiting for a reply from a website but never continues. A browser page connects to the site fine so I think traffic is being blocked by something but I get no indications. I set ...
john D's user avatar
  • 1
0 votes
2 answers
490 views

Server slow, but plenty of CPU & RAM

My site has gone from getting 20,000 visits/day, to 182,000 yesterday, due to being featured on a number of popular sites. The site has become somewhat unresponsive. Many requests will lead to a ...
Kohjah Breese's user avatar
0 votes
0 answers
316 views

Xen bridge - block traffic from port range - iptables / ebtables

I use Xen with bridge interface : - eth0 - viifbr0 - Name of VM interface : vifv10XX.0 Do you know if it is possible to block output traffic from source port range for a domU please ? If yes, can ...
Puma's user avatar
  • 1
0 votes
3 answers
188 views

Are some SSL certificates able to handle more traffic?

I had a free SSL certificate that was working fine when my site had lower traffic - but the traffic has increased, and now users frequently receive errors establishing a secure connection. Some of ...
Jonathan Basile's user avatar
0 votes
1 answer
239 views

Ubuntu server close connections unexpectedly after multiple downloads

When I connected to Ubuntu server via SSH connection and run script which downloads a lot of images, its quitting ssh connection after few seconds with error: "Write failed: Broken pipe". Then I can ...
user3434212's user avatar
0 votes
0 answers
2k views

How can I create routes between two separate LANs

I have a ASUS RT-AC66U with merlin firmware, how can i create a connection between 2 different subnets, whitout using Vlan's ? My Server subnet is 10.10.1.0 255.0.0.0.0 Asus router and client ...
Bendo1984's user avatar
1 vote
1 answer
624 views

OpenVPN: Traffic Redirection not Working

tl;dr (after hours of debugging with @krisFR): At least under Debian 8, never use virtual interfaces (eth0:1) for OpenVPN, instead apply the new debian iproute2 methods (manual approach) described ...
TCB13's user avatar
  • 1,238
4 votes
1 answer
2k views

Elasticsearch: High traffic on loopback interface

One of our application uses Elasticsearch (1.4.4) as an in-memory cache. The application is a Java webapp deployed on Tomcat 7 with Oracle 1.7. The elasticsearch instance is a one-node setup deployed ...
ercpe's user avatar
  • 576
3 votes
2 answers
6k views

Transatlantic Ping respond times [closed]

Not sure if this the the right place to ask the question. But has anyone had any experience with ping response times or knows of an good to average response time for transatlantic traffic? we have an ...
Michael's user avatar
  • 31
1 vote
1 answer
2k views

What's the catch for unlimited bandwidth for VPS? [closed]

I need to choose some VPS packages, so I started to google a lot of VPS companies. Typically, a VPS package should have a limited bandwidth(or say traffic, data transfer), such as 2TB, 3TB, etc. Then ...
Joe Huang's user avatar
  • 225
4 votes
1 answer
4k views

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 ...
Danny 's user avatar
  • 41
0 votes
1 answer
371 views

Random spikes of high ingress traffic. What could be the cause? [closed]

I understand that this is rather a generic question but wanted to see if you all could offer some good feedback. Our business has three locations, one in the West Coast, two in the East Coast. Our ...
vpaterno's user avatar
  • 113
-2 votes
1 answer
79 views

Logging traffic in a file? [closed]

today I'm looking for a tool that allows me to log any traffic that goes in and out. It would be perfect if it would store that data in text files on the server. Does anyone have a tool like this? ...
Moritz's user avatar
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