Tagged Questions

In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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-3
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0answers
18 views

SSH client side Bandwidth increase [on hold]

My university has some 60 kb/s cap on download speed which I want to increase but don't know how . Today I installed psiphon and connected via ssh protocol . I was getting around 400 kb/s to 1.5mb ...
2
votes
0answers
21 views

How to monitor the bandwidth per each iptables masqueraded device [closed]

Question: Which tool could I use to monitor and break-down in real-time which bandwidth is routed by iptables to which computers? Context: I have a linux box masquerading about 15 devices to ...
0
votes
0answers
29 views

Windows Server 2008 consuming a lot of bandwidth

My Windows Server 2008 has been consuming A LOT of bandwidth in the last days (990 GB). This is a development server so it should not consume more than 100mb aprox. We noticed this after the server ...
0
votes
1answer
34 views

Apache2 Mod CBAND what happens if the limit is reached?

I setup an Apache2 server with the mod_cband to limit download speed at 512kb/s, and I was wondering what happens if I reach the limit. For example, if my server connection is 100Mb/s, I would ...
-2
votes
2answers
43 views

How much traffic does a Ubuntu server cause for updates? [closed]

Does anybody have some numbers on how much traffic/month a ubuntu server causes if automatic updates are enabled (just for fetching the apt sources and the packages)? I have a small box which is ...
0
votes
0answers
12 views

Sonicwall 250m bandwidth

We have an nsa 250m with the SonicOS Enhanced 5.9.0.2-107o version. Is there a way to manage bandwidth by group ? I'm already able to do this this by user with this method Firewalls => Access rules ...
-1
votes
1answer
39 views

Monitor bandwidth per directory [closed]

I have uploads directory and I would like to count the total downloads of files in that directory, in short, is it possible to monitor the consumed bandwidth per directory?
1
vote
0answers
72 views

Web server losing bandwidth for 6 hours a day

For the past week or so our CentOS server (that runs Apache and NGIX as a proxy) has been acting odd as its bandwidth output has been consistently dropping from around 10/11pm until 4am to around 1M ...
-4
votes
3answers
69 views

What network performance is required for thin clients?

I am building a network with approx. 1000 thin clients. I intend to run them over VNC. What type of LAN bandwidth and latency are required? What type of hardware will provide that? If, instead of ...
0
votes
1answer
100 views

How Do I Limit Bandwidth For Connections On My Ubuntu VPS?

I have a VPS with Ubuntu 12.04 installed, with a 35Gb limit each month (any more than that used and I have to pay). I normally use it with Zpanel to host a Joomla website, and keep the mail ports ...
-1
votes
2answers
46 views

Huge Outgoing traffic on windwos azure [closed]

I have a vm on Windows Azure running centos6 as dev node, and have recently experiencing a huge increase in outgoing traffic. VM was stopped and after started by 1 day it shows 236.63 GB on outgoing ...
0
votes
0answers
32 views

Web Hosting Bandwidth

The company that hosts my web servers mentions a 2mb/s dedicated bandwidth with a burst of up to 5mb/s using the 95th percentile ( Burstable ) billing. To me that sounds slow but I know nothing about ...
0
votes
0answers
50 views

Reduce Bandwidth on a cisco router (Cisco 877)

PS:Sorry for my english i'm french so i'll try to write the best as I can. I looking since a few weeks now for a command to reduce the bandwidth on a cisco router. I done try a lot off command and ...
0
votes
0answers
89 views

Monitor traffic on ports with Cacti

This seems like a basic question, but i haven't found any solution yet. Recently I've installed Cacti for interface traffic monitoring. That works fine, but I would like to see these graphs for used ...
10
votes
1answer
376 views

FreeBSD link aggregation no faster than single link

We put a 4 port Intel I340-T4 NIC in a FreeBSD 9.3 server1 and configured it for link aggregation in LACP mode in an attempt to decrease the time it takes to mirror 8 to 16 TiB of data from a master ...
0
votes
1answer
120 views

Extremely high bandwidth usage on Amazon EC2 instance

I have a m3.medium instance on Amazon EC2. Things are under development and my usual bandwidth usage is no more than 200 to 300 MB per day. I just noticed a spike in my EC2 bill and found out that I ...
10
votes
2answers
306 views

Counting bandwidth from a Docker container

I'm trying to figure out how to track bandwidth coming from a Docker container. Normally I use --uid-owner as mark to keep track of bandwidth usage for a given user. However, even when I run all the ...
0
votes
0answers
40 views

Accelerating OpenVPN using multiple connections

My ISP throttles single connection downloads, but if I use an accelerator like aria2c and open lets say, 20 connections, my download speed shoots through the roof. I have been able to saturate my ...
2
votes
2answers
649 views

Fortigate 100d 802.3ad bonding / Link aggregation

My network is as follows: 1 x Fortigate 100d with the two WAN ports connected to: Ethernet ISP with STATIC IP configured manually (20 Mbps symmetric) via ISP A Ethernet ISP with STATIC IP ...
0
votes
0answers
108 views

Brute force attack on my servers ports burning through bandwidth

Am having some form of brute force attack being done to my server and I have a screenshot of what's happening below. Remote Address 121.14.154.206 is somehow abusing all of my ports and burning ...
0
votes
1answer
39 views

Low Upload Bandwidth Issues

I'm fairly new to the networking world, so please bare with me. On my companies LAN, we are experiencing low upload bandwidth. Download bandwidth is fine. We have a 10 Mbps up and down through our ...
1
vote
1answer
79 views

Increase bandwidth per connection on a server

Requirement: I am load testing Rabbit MQ by generating a large number of requests/sec to the server (Server config: 8 core, 16GB). To achieve the above, I am generating load from a client machine at ...
0
votes
0answers
202 views

If I enable bandwidth control on my wifi router can I handle more connections reliably?

I have a small router (TP-Link TL-WR841N) bandwidth is 300 Mbps. With default settings it cannot handle more than 10 connections without choking and kicking people out. Theoretically, however, it can ...
2
votes
3answers
53 views

How do I assess the capacity of my link for Active Directory needs?

I'm working for a company that has a head office and some remote sites. We have an Active Directory server in the head office and we now want all of the users in the remote sites to join and work on ...
1
vote
0answers
49 views

Group traffic shaping with traffic control?

I'm trying to limit the output bandwidth generated by an application with linux tc. This application sends me the source port of the request that I use has a filter to limit each user at a given ...
0
votes
1answer
73 views

Is it possible to limit output bandwidth between eth0 and lo?

I'm trying to limit the bandwidth between my eth0 output (nginx proxy) to my loopback inteface (apache) by filtering on destination port. Incoming Packet -> Eth0 -> 0.0.0.0:80 Nginx -> tc ...
-2
votes
3answers
98 views

Leased Line bandwidth distribution among users [closed]

Say that i purchase a 4 Mb leased line (Radio wave), and also i have around 50-75 users using the connection. What will the speed will each user get ? Will the 4MB be divided among all 75 users or ...
1
vote
1answer
71 views

Reduce outgoing bandwidth in ffmpeg

I have a server in Rackspace with some ffmpeg processes listening to audio streaming. Off course when listening to streamings the incoming network traffic is high, and this is ok. But I noticed that ...
-4
votes
1answer
61 views

Streaming audio/video in a publicly-hosted server increases bandwith usage [closed]

I have a website hosted in a public server (withoud any streaming content) ,using public hosting instead of private because its cheaper. But in public hosting their are limitations when compared to ...
1
vote
1answer
485 views

UDP bandwidth calculation based on packet size, request rate and latency [closed]

I need to estimate the bandwidth for a measurement application to be written that uses UDP. I have a good sense of the numbers but am not sure how to put them together. I checked a few throughput ...
0
votes
1answer
189 views

nginx - limiting bandwidth usage per server block

In Apache we have some great solutions for limiting the bandwidth usage per vhost, like mod_bandwidth. However, since I started using nginx, I couldn't find a way of limiting and monitoring the ...
5
votes
1answer
118 views

Method / Tools to analyze temporarily bandwith collapse

I've tested my server¹ with a python port of mechanize - multi-mechanize. I ran several pretty simple tests - but I always get a drop from 10mbits to some kb of upload bandwith. And I've no idea why. ...
0
votes
1answer
41 views

Do you need N times the bandwidth to send same data to N users? [closed]

Do you need N times the bandwidth to send same data to N users (for example when streaming live video to many users) or are current network protocols capable of cloning packets mid-route (or similar ...
4
votes
2answers
312 views

Should Skype be reliable in a corporate environment?

I have been managing the IT function in a small software development company that has grown from 10 users to 70 users in 5 years. Most users in the company are office based, but some key users work ...
1
vote
1answer
98 views

Where is my bandwidth?

We've got a DSL line rated at 7Mbps. The best speed test results are little over 4Mbps. After replacing our modem, and spending hours on the phone with Verizon, they say that 4Mbps is within ...
2
votes
3answers
2k views

How to use iSCSI MPIO to increase bandwidth with XenServer?

I've a FreeNAS Server with four network interfaces. The iSCSI traffic goes through two of those interfaces, and each interface has one IP address in a different subnet. As example: igb0: ...
0
votes
1answer
77 views

Best way to optimize site speed for a large traffic website? [closed]

I'm currently managing a Website for a client of mine who gets about about 500-1000 visits minimum a day, and this includes Members uploading videos, photos, blog posts and other content. The site ...
-1
votes
1answer
121 views

How does HA proxy use bandwidth?

We're using HA proxy for load balancing web servers. How does bandwidth usage work for HA proxy? HA proxy is on a different network than the web servers. Does the bandwidth that ends up being used ...
1
vote
0answers
125 views

HTB equal bandwith sharing per ip in one class

In my tc configuration (shown below) in one class all bandwidth is shared among connections equally, but I want to share bandwidth among all IP addresses equally. Now: 192.168.0.2 - 38KB/s ...
0
votes
1answer
112 views

Windows 2012 R2 RRAS VPN Bandwidth issue (worked fine with 2008 R2)

3 machines : VPN Server (VS) Random Server (RS) My Personnal Computer (PC) PC and VS on different networks VS and RS are on same network VS can connect the internet directly and has a bandwidth of ...
0
votes
0answers
49 views

View historical data per IP with PRTG packet sniffer

I have recently set up PRTG's packet sniffer sensor for bandwidth monitoring. I am able to pull up historical data in 15 minute increments and see who was the highest user but I would like to see ...
0
votes
2answers
45 views

How to automatically send email when process is using more than xxxMbit/s

I haven't found anything for that. How could I automatically send an email (via crontab) with the ID of the process, the user & finally what's the name of the process for example when this process ...
0
votes
0answers
74 views

Trace Route, Slow Pings, timeouts on after server restore

I am getting bad ping times on my server, especially for large data requests. The stored procedure on the server runs at 1 second, while calling it through my web applicaiton takes 23+ seconds. This ...
1
vote
1answer
1k views

fortigate traffic packets not logged

Ciao, we use Fortigate device since years and now we need to check bandwidth usage per protocol and this is is not possible. We made this test: 1) all policy Logging Options - Log all Sessions 2) ...
1
vote
1answer
65 views

PPTPD VPN only forward DNS requests?

Is there any possible way of configuring a PPTPD VPN server to only forward DNS requests on so that I can save bandwidth? Thanks, Francis
-2
votes
1answer
72 views

why does a multicast server endlessly transmitting packets even no client require [closed]

i used to setup a multicast server using windows server 2003 OS, i can see a lot of packets transimitted from the server once it was started. Does it make sense when no one is requiring the multicast ...
-1
votes
1answer
52 views

Dedicating a server for latency test

I've created a server to test bandwidth from employees working remote (using speedtest.net mini), but was wondering if anyone knew of a way to setup some software in linux to test latency and possibly ...
0
votes
1answer
104 views

What size bandwidth pipe do I need? [duplicate]

I am currently hosting in a data center and paying a very large monthly bill. We are moving to a new office and I have been toying with the idea of installing a leased line and self hosting. Public ...
0
votes
1answer
121 views

How do I measure the maximum throughput over a timeframe?

I tried to find out the maximum up- and down- DSL throughput I can achieve on my local machine. I tried it with iptraf: On my server with $IP I started: iptraf -s and on my local machine: iperf ...
-2
votes
1answer
56 views

How do I ensure a REST API does not have a bottleneck when it receives requests? [closed]

I'm creating a REST API that will listen on a public URL and accept uploads of large amounts of data. I understand how to scale software processes using message queues, but what I don't understand is ...