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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Mac OS X > pfctl > How to limit Bandwidth for a specific port?

I need to limit the Bandwidth of our Apache Server (which runs on port 80 by default). It was easy with ipfw as follows: sudo ipfw pipe 1 config bw 100Kbytes/s sudo ipfw add 1 pipe 1 src-port 80 ...
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158 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 ...
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295 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 ...
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1answer
616 views

Openvpn limit bandwidth

I would like to ask you a question concerning openvpn and the possibility to increase the bandwidth in case I want to transfer files. I have an openvpn server via which I connect to my data center. ...
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1answer
464 views

Measure Upload Speed between a client and our server

We host a SAAS application specially customized for multiple clients. For one customer in particular -- they are reporting sporadic performance issues from various locations on their network, in ...
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215 views

how to measure IP bandwidth in pass through mode in linux?

I want to measure the IP bandwidth in pass through mode. Please find the attached picture for configuration and my question also. If there is no solution with OpenWRT, I need any alternative ...
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1answer
631 views

Gateway Modem loses ability to DNS lookup intermittently, often under heavy load

We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached). Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
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2answers
130 views

File transfer - Bandwidth flickering for no reason

We are experiencing file transfer issues. I try to troubleshoot this problem but it is really hard. Here is a screenshot I took while transferring a file from my workstation to another server. The ...
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1answer
1k views

SonicWall TZ 200 Network bandwidth or usage monitoring

I was using Pfsense for a while and recently replaced it with SonicWall TZ200. What I miss now is a Bandwidth or usage monitoring like BandwidthD to monitor IP wise traffic. How can I do this ...
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1k views

bridge traffic limiting via tc

I have a Linux machine running as a bridge simulating various network conditions. I use tc for this. Introducing delays or packet loss is quite simple but I got into trouble trying to configure ...
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5answers
5k 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 ...
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2answers
1k views

When reading SSD drive specs, what's the difference between MB/s and IOPS?

I'm trying to find a suitable SSD drive for my database server (postgres on debian 7 amd-64), and I find that for some SSD drives, while read speed is specified in MB/s, write speed is in IOPS. To ...
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917 views

Reading NIC bandwidth usage instantly

I want to create a script that runs on a linux server, that script should read bandwidth usage of NICs installed on other servers and then store them in memcached. So I need a command that reads ...
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6answers
286 views

Bandwidth out of control, where to go next

I was wondering if someone could give me a bit of advice. I have just released a site live and it has maxed my bandwidth / space more than what i predicted. Im from Australia so space and bandwidth ...
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3answers
1k views

Find whats using all my servers bandwidth

TLDR: how can I dig deeper into my Mac mini OSX server to determine what processes are consuming so much bandwidth, or where all the inbound traffic is coming from? Resource caching is on, all ...
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5answers
2k views

Converting MBps to k/s

We're diagnosing a speed problem between our shenzhen office and our asset management server. It seems stupid, but I need to get the data in the same format. How do i convert the MBps that isp's ...
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1answer
389 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 ...
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6answers
762 views

Hardware bandwidth limiter

Really not sure if this is the place to be asking this, but here goes.. Our company has grown exponentially in the last year. As such, our internet connection needs some serious managing and limiting ...
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5answers
3k views

minimum required bandwidth for remote database server

I want to build a small warehousing application for my company. We have a central warehouse which distributes to 8 sales points across the country. They insist on an in-house solution. I am thinking ...
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9answers
2k views

Need solutions in sharing a 3Mb/768Kbps DSL line to 60+ users and faster bandwidth

Two parts. Part 1: We currently have 2 DSL Lines with 3Mb/768Kbps speeds load balanced for 60+ users. Accessing the Internet is borderline unusable. The simple solution would be to get a faster DSL ...
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5answers
1k views

Slow internet bandwidth on Network

I know this looks like some of the other questions but they don't seem to have been answered as fully as I hoped. On our network we have a bunch of PC's that are connected to the internet. Now for ...
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4answers
8k views

How can I limit a users bandwidth in Windows Server 2008 R2 [closed]

We have a user that likes to download movies with torrents in our office and it just kills the overall network performance. Unfortunately we need this user and don't want to confront him directly ...
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1answer
646 views

Server Hacked + Huge Bandwidth Usage Spike [duplicate]

Possible Duplicate: My server's been hacked EMERGENCY I run a couple of sites on Ubuntu via Rackspace Cloud Server. My site typically uses about 3 GB of outbound bandwidth a day. Today, ...
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5answers
1k views

Monitor bandwidth over time, excluding certain networks?

I'd like to monitor bandwidth usage of my Linux servers, but there's a catch: traffic between my two servers is not counted against me, only traffic to the internet at large. However, my servers have ...
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1answer
137 views

Difference between peer network levels?

What are the differences between the network peer levels? I've seen peer1 2 and 3 tossed around the web and wondered what the differences were. Thanks!
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4answers
217 views

Determine bandwidth issues for circuit not under our control

Our company is hosting a website out of our office, it hosts the site, some downloads, and a ton of training videos. The server itself is a Poweredge1900, running Web Server 2008 64bit, Dual Quad ...
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3k 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 ...
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1answer
568 views

Bandwidth Usage: ActiveSync vs IMAP/CalDAV/CardDAV

I have been trying to find bandwidth usage information how the technologies compare. I understand that ActiveSync is instant, and new changes get "pushed" to subscribers. But IMAP/CalDAV/CardDAV is ...
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1answer
1k views

Random gigabit bandwidth with my Samba fileserver

I own a personnal Fileserver, build on an AMD X2 platform, with an intel gigabit CT network adapter, running debian 6.0. I've built a raid5 (2To x 3), shared by samba 3.5.6 From my desktop computer ...
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4answers
5k views

How can I calculate the 95-percentile bandwidth usage of a network device?

My provider is billing my bandwidth using the 95-percentile method. I know what it is in principle (take measurements, throw the top 5% away and use the remaining highest as result). The question ...
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1answer
881 views

Preventing Amazon S3 Bandwidth Stealing?

I have a Image Hosting Site that is using Amazon S3 as a main source for bandwith and storage. I have a few option here to prevent other sources from stealing my bandwith, but I am hoping there are ...
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3answers
6k views

Any freebsd/PfSense realtime bandwidth monitoring tool?

i need to know if there is any Tool (specifically for FreeBSD) , through which i can get the Realtime network traffic usage of any Host/IP , and which should also run on Multiple interfaces as well? i ...
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1answer
183 views

Guaranteed international bandwidth solution?

How plausible is it to transfer large amounts of data consistently via the network? For example, is there a way to guarantee a minimum upload speed of 8Mb/sec from various international sites (Hong ...
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3answers
617 views

Calculating bandwidth math

I think I'm having a pretty fundamental problem in calculating bandwidth math. I work in streaming video and I often have clients asking me the famous question: "How many streams can I push at ...
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2answers
770 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 ...
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6answers
573 views

How much traffic per month would my site need? [closed]

HOW MANY GB OF TRAFFIC IS REQUIRED PER MONTH? Any way to calculate this? Webhosting companies have a limit when ordering, so I need to know... A classifieds website using PHP and MYSQL. MYSQL has ...
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2answers
500 views

Advantages of Download Managers

I have never administered anything offering enough large downloads to warrant considering an implementation of a 'download manager'. That is, one of those java or .Net applications that manages a big ...
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2answers
686 views

Linux Speedtest (or download) capable of 10Gbps

We recently just got some brand new servers from Softlayer out of Dallas 05 that should have 10Gbps connectivity and I'd like to test this claim against a few locations. Does anyone have any good ...
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3answers
195 views

Can a switch consume bandwidth?

I have a network with a router and a switch. At first my ISP's optical fiber is connected with media converter input port. Than Ethernet cable (output port of Media converter) is connected with the ...
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2answers
595 views

How to measure bandwidth within the last 15 minutes?

I would like to log my bandwidth into a database and find out when my windows server 2003 is being used the most. I want to feed the database with the bandwidth passed from the last feed (let's say ...
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1answer
564 views

iperf installation and use

I would like to use iperf to test my WAN bandwidth connection. However, I can't find a good method to install and administer it. I'm a Windows guy and don't know much about Linux, and googling iperf ...
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2answers
360 views

Command or utility to measure the amount of traffic generated by an nmap scan

First, just a bit of background: My ISP has decided to block all inbound connections (from their customers' perspective) which effectively means that I can no longer host anything on my connection ...
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3answers
357 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 ...
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3answers
98 views

Server in country X. Majority of users from country Y. Load times are unacceptable

I've been asked to explore our options. They don't wish to move the server physically because it's a lot of work and there will be no one to take care of things if something really bad happens. ...
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2answers
136 views

How can I stop one virtual iis site from drowning out all the others?

I have about 20 IIS web sites on one Windows 2003 server. One of the websites is for downloading product updates. What methods/tools are available to me to ensure that the one does not kill the ...
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2answers
1k views

How to log bandwidth usage for Apache virtual hosts?

I need a way to extract bandwidth usage logs for Apache virtual hosts. I see that a lot of people are recommending AWStats (and similar programs), but I don't need a graphical interface. All I need is ...
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2answers
593 views

monitor local network traffic issue

I am using Networking Tab of Windows Task manager to monitor local network traffic to test how much bandwidth my application will use. My scenario is, I will use a local console client application to ...
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1answer
50 views

Track what is causing AWS RDS to use insanely high bandwidth

We are having a high traffic (100K hit/day) Drupal news website hosted on AWS. Its behind cloudflare & 2 Load Balanced Varnish servers. For some reason the bandwidth usage is very high for RDS. ...
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4answers
68 views

Loading after a minute

Here is the web site. http://reachourfans.com when i enter the site, it's loading nothing, and after a minute it's beginning loading the site. I've switched off the Update module, and installed it ...
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3answers
2k views

Configure a Linux router for fair bandwidth allocation without unnecessary limiting it

I run a Linux router (more precisely OpenWRT) on an internet connection with very limited bandwidth, around 1 MBit/s downstream and some dozen kBit/s upstream. There are several machines on the net ...