Questions tagged [traffic]

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1answer
48 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 ...
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1answer
20 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 ...
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0answers
13 views

How do we prepare for massive spikes in traffic? [duplicate]

Currently our site is hosted on wordpress.com, we are using an iframe to send livestreams through IBM's server and are trying to prepare for a massive audience spike of 100,000 people. How do we ...
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18 views

Remote WMI Traffic

I have a problem understanding remote WMI traffic. Let's say I have 2 PC's in a LAN (PC-A and PC-B). From PC-A i type in CMD: wmic /node:"PC-B" /user:"B" /password:"whatever" computersystem get "...
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0answers
128 views

How to limit bandwidth/internet speed per second to each VPN client

I have setup IPsec VPN Server using Libreswan on CentOS 7 and Ubuntu 18.04 both. Now I want to limit internet speed to each connection. I searched on internet and found Linux Traffic Control (TC) and ...
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34 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 ...
0
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1answer
62 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 ...
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0answers
33 views

Squid proxy incoming and outcoming connections?

I'm using the squid proxy and I'm trying to block some connections (incoming and outcoming traffic) from a certain ip address. However, for example, if I deny all the connections (http_access deny all)...
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0answers
21 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 ...
1
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1answer
921 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 ...
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2answers
48 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 ...
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0answers
173 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 ...
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0answers
23 views

Object Level Logging for S3 compatible Storage Systems (Video Stream Traffic Logging)

I do have a small video platform on AWS Beanstalk (Flask Web App) in the German region (I do need German servers due to some regulatory issues). The video files are currently on an AWS S3 object ...
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0answers
29 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: # ...
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0answers
13 views

How do i know the maximum instantaneous amount of network traffic (in / out) of instances per subnet?

I've noticed that I can use Cloudwatch to see how much network (in / out) traffic my individual instances have. I want to know the instantaneous maximum traffic volume of A-subnet during a month. **...
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0answers
31 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 ...
4
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1answer
231 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 ...
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0answers
21 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 ...
0
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1answer
416 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/...
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1answer
344 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 ...
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1answer
310 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. ...
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0answers
93 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
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1answer
60 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 ...
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2answers
192 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) ...
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2answers
527 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
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1answer
46 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 ...
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3answers
3k 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 ...
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0answers
68 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
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1answer
395 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 ...
1
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1answer
72 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
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1answer
146 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
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1answer
260 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
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0answers
120 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
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1answer
900 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 ...
1
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1answer
4k 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
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3answers
386 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
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1answer
15k 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). ...
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0answers
88 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 ...
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0answers
382 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 ...
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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, ...
2
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2answers
1k 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
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1answer
60 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
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0answers
365 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
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1answer
656 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
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0answers
967 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
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1answer
355 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
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2answers
261 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 ...
0
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1answer
3k 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
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1answer
117 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 ...
3
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1answer
211 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 ...

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