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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22
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7answers
20k views

how can I limit per user bandwidth?

To summarise: I have a dedicated server with a few friends running a torrent client with web gui. Each user is running a client under their username on the server so downloads go in their user dir, ...
6
votes
5answers
6k views

Alternative to mod_throttle

Is there any alternatives to mod_throttle in apache2 ? Currently this module has been closed http://www.snert.com/Software/apache.htm.
9
votes
3answers
1k views

Monitor Internet bandwidth

We have an IPCop firewall/proxy installed in our network, and although I can use iftop to somewhat take a look at how the clients are using the Internet, is it possible to monitor it from outside the ...
4
votes
1answer
2k views

How can I monitor bandwidth usage by Virtual Host in Apache on Ubuntu

My Environment: Apache 2.2.9, Ubuntu 8.10 I am trying to find a way to monitor the bandwidth usage on my server broken out by each virtualhost WITHOUT installing something like PLESK, CPanel, or ...
4
votes
1answer
5k views

how to get a total bandwidth graph in munin

I have munin-node in a basic default configuration on all my servers, I would like to create a summary chart that displays total bandwidth in/out http and another chart showing total bandwidth in/out ...
39
votes
5answers
2k views

Is there a linux terminal command that lets you see the amount of data coming in to your tcp connections in real time?

It would be something similar to top, where you see your cpu processes in real time. I'm not looking for a GUI like Wireshark to do it.
4
votes
5answers
4k views

IP/Process based bandwidth usage stats tool for linux

I'm looking for a simple tool to report server bandwidth usage based on IP/Process. The reason for that is one of our servers is "bleeding" bandwidth and there is a need to find out where it's going. ...
12
votes
9answers
803 views

Opinions on hosting servers in-house

I've read a half-dozen threads here about the pros and cons of hosting in-house, but our situation is a little different than most, so I figured I'd just open a new question. In short, we're a small ...
2
votes
2answers
771 views

How do I reserve bandwidth for rsync?

Currently nginx uses all my bandwidth. How do I leave some for rsync?
1
vote
1answer
43 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
1
vote
1answer
306 views

What does it mean - to get billed to the 95th percentile at $x.xx per meg?

I got a quote from a colo, saying "I could do 3U, the power and 20 megs burstable to 100 for $250 a month with each additional meg billed to the 95th percentile at 6.50 per meg..so you would ...
1
vote
2answers
655 views

Is there an application to monitor bandwidth usage broken out to the application level for Linux (Ubuntu)?

I'm currently running Ubuntu on several machines and I need to track bandwidth usage per application. Is there a pre-built package or system that will track bandwidth usage and report on that usage ...
1
vote
1answer
658 views

How to choose IP Transit and Co-location providers

I have reached a capacity where managed hosting is becoming expensive - especially with respect to the cost of bandwidth we are using. A cursory quote from cogent demonstrate that we could be saving ...
1
vote
4answers
4k views

How can I monitor per-user bandwidth on linux?

I'm looking to monitor how much bandwidth different users consume on a server. Effectively, I'm looking for something like UserIPacct (http://ramses.smeyers.be/homepage/useripacct/), where I can get ...
0
votes
1answer
206 views

LAN bandwidth in Linux is low

everyone, I connect two PCs both with 1000Mbps NIC. One(A) of them runs Fedora 8 while another(B) runs Windows7. I test bandwidth between them with Ixchariot, it shows about 10Mbps. If A and B both ...
0
votes
3answers
1k views

FTP Rates drop off after a short time

I am trying to transfer a number of large (10's of GB up to 100's of GB) files to an HP DL380 host, running vsftpd on a 10 GigE network / LAN. The transfer initially starts out fast, i.e. 45-60 MB/sec ...
0
votes
3answers
101 views

Please help me select a webserver configuration

I have a website, which has grown from 10 visits per day, to 100 per day in couple of months, and now to about 800 unique visits per day. So far, I have been using a VPS with 512MB RAM, and shared ...
0
votes
6answers
2k views

Server upload bandwidth testing

I'm looking for a tool (not AB, or any stress-test) that can simply test my server's external (overseas) upload bandwidth. The machine's location is at Europe but i'd like to test my speed to America. ...
21
votes
5answers
27k views

What is the best way to transfer a single large file over a high-speed, high-latency WAN link?

This looks related to this one, but it's somewhat different. There is this WAN link between two company sites, and we need to transfer a single very large file (Oracle dump, ~160 GB). We've got full ...
21
votes
8answers
3k views

Dynamically blocking excessive HTTP bandwidth use?

We were a little surprised to see this on our Cacti graphs for June 4 web traffic: We ran Log Parser on our IIS logs and it turns out this was a perfect storm of Yahoo and Google bots indexing us.. ...
30
votes
5answers
1k views

Technologies that allow YouTube scale distribution?

Youtube as we know, is massive. It has thousand of concurrent users streaming at least 2 megabytes per video. Obviously, that gets to be a lot of traffic... far too much for any one server. What ...
10
votes
1answer
8k views

AWS, Bandwidth and content delivery

My question is about Virtual Machines and delivering their content over the servers connection to the internet. I have an Ec2 windows instance, and that instances network connection appears to be ...
15
votes
4answers
2k views

How to Monitor Bandwidth usage in real terms

I have a small (windows) network with a few people on it. We have internet access via a BT router Generally things are all fine, but occasionally, we seem to experience a dramatic loss of ...
1
vote
5answers
4k views

NIC bonding with two uplinks

Is bonding the preferred way of implementing ISP redundancy? In the texts I've seen, bond device has a netmask, gateway of it's own. How can this be obtained if there are two different gateways from ...
8
votes
4answers
5k views

Slow network speeds - what should I check?

Users are reporting that it's taking a long time to access files on the network, browse intranet sites, etc. What should I check?
5
votes
3answers
1k views

How do ISPs/Colocation Facilities limit bandwidth for Ethernet Drops?

I have switch providers and have run into some problems with bandwidth limitations. I have more bandwidth then before, but there are performance issues. The router is connected to a 100mBit port, ...
4
votes
4answers
3k views

finding the best network latency between two countries

I know there are many tools to test for bandwidth and latency, but they all rely on having at least one host from which you can run those tests. I wonder whether there's an online source or some ...
3
votes
2answers
4k views

Limit total bandwidth use per user

I'm running a Linux server accessible to a wide range of users, and (due to some policies in place by my upstream Internet provider) I need to limit the total amount of data a user can transfer to ...
1
vote
4answers
413 views

Graphical App for network usage monitoring

In 2006 I was working in tech support and my sysadmin boss guy showed me a VMWare App that had one purpose, to constantly monitor network traffic and it showed a nice graphical display of how much ...
1
vote
5answers
2k views

Increasing bandwidth with multiple NICs

If I have two NICs in my system and both are connected to different ISP with different IP addresses, can I distribute my network traffic on them to increase my Bandwidth. I have already looked at ...
15
votes
2answers
340 views

What are the different classes of Internet Connection and how do they differ?

I'm looking for the technical differences between consumer and professional Internet connections. By "professional" I mean: The kind you can get at a datacenter The kind you can get at an office ...
7
votes
1answer
400 views

Are network switch data transfer speed limits per port or per device?

Sorry in advance for the newbie question! When network switches report speeds of say 100 Mbit or 1 Gbit, are they referring to the maximum speed per Ethernet port or is this the physical limit of the ...
4
votes
1answer
361 views

measuring bandwidth per-user used by ssh server-side connections on linux

I'd like to be able to measure the bandwidth used by each user by their inbound ssh connections, into a linux box. I measure most other traffic using iptables and user-matching, but inbound ssh ...
2
votes
3answers
994 views

Tool to track bandwidth by domain name? [duplicate]

Possible Duplicate: How can I monitor bandwidth usage by Virtual Host in Apache on Ubuntu I'm running an Ubuntu 10.04 server that hosts several domain names. All domains point to the same ...
1
vote
0answers
164 views

How can I isolate the source of outgoing bandwidth usage on VPS server? [closed]

I have a VPS running CentOS Linux 5.x, with Kloxo server management software. I kept everything as close to default as possible. I created NS records with my domain name provider, and successfully ...
1
vote
1answer
5k views

Limiting bandwidth dynamically in Squid

In fact my problem is with users who download large files from internet in my network. I have a Squid cache/proxy server in my network that is placed between my network and the Internet. I thought ...
1
vote
4answers
379 views

Bandwidth throttling software

I need to be able to simulate high bandwidth/high latency/high packet loss on my pc for the purpose of testing the software that I'm writing. I've seen some software that you can install on a ...
0
votes
2answers
508 views

Bandwidth Monitor

I am creating a bandwidth quota program in PHP, however I am finding that to create it with PHP is a bit hard. As an example of what I am trying to do, the user can download 10GB per day, and after ...
3
votes
3answers
3k views

How long does it take for an iptables rule to apply?

How long does it take for an iptables rule to apply? I use a script with the code below in an attempt to block hosts, but they don't appear to take immediately. Is there some delay, is iptables not ...
2
votes
1answer
2k views

iperf-like bidirectional bandwidth measurement through NAT

I am using iperf to measure my uplink speed between my home PC behind NAT and a fully accessible root server. It does so using a TCP connection. For whatever reason it seems that iperf can only ...
1
vote
1answer
206 views

Can TC limit bandwidth by the Qos field of IP header

We are developing a client/server applications. There are three types of network data in our server app: Realtime data such as those of Video/audio, Critical Data such as those of Database data and ...
1
vote
1answer
254 views

Local network speed appears to be being limited

I have a dedicated server setup that has just started causing us issues. Our immediate problem, is that last week, could log into an admin page of one of our websites just fine, now we can't. It does ...
1
vote
3answers
351 views

Bandwidth Suggestion

I have been asked to analyze the bandwidth usage of a company and make a recommendation for upgrading their Internet connection(s). Here is the layout 3 DSL lines so it is 3x(6 Down, 1 Up Each) into ...
0
votes
4answers
96 views

Shared hosting banwidth limits

I have a shared hosting account with a 20GB monthly bandwidth limit. I have exceeded my monthly limit and according to my host my counter is never reset, they say they use a continuous 30 day counter. ...
0
votes
5answers
157 views

DIY hosting - Comms connection

It's been a few years since I last considered this, so I wonder if anything has changed. What's available nowadays (communications wise) for somebody wanting to host a website at their own premises? ...
0
votes
2answers
234 views

How do I know when server “runs at speed limit”?

Basically I'd like to know if it's possible to speed up my server or not by using caching like squid, checking for possible errors in configuration, optimizing various server software parameters, etc. ...
0
votes
2answers
1k views

Monitor/analyze/report resource trends on a single server— perfmon +?

I'm running a handful of video streaming servers (Win2k3 Ent SP2). As my user base is starting to grow, individual users are beginning to report that they are experiencing less-than-ideal service. ...
-2
votes
1answer
47 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 ...