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Questions tagged [traffic]

298 questions
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Network Traffic flow

Let's say I copy a network folder(Machine A) contents to another(Machine B) and I do this copying operation on a different machine (Machine C). How does the traffic flow? Does the data flow from Machine A to Machine B directly? or does it go through…
BlueGene
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How to prove that DNS traffic is being lost

In my office LAN, queries to the DNS servers outside our LAN really often fail (timeout). I suspect that it's some problem with our provider, but they have not responded to my complains. Is there a tool that I could use to benchmark/measure the…
user3915
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how to manage bandwidth and amount of traffic over pptp?

I'm running Ubuntu 12.04.4 and using it as internet server , file server and printer server. The problem is that my company manager decided to limit bandwidth and the amount of data per user per month.for example 100 Kb/s and 5 GB month/user. Users…
user273084
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How can you investigate a daily traffic drain?

Running Amazon EC2 instance, t3.large tier. And observing interesting situation: Every night (UTC+1 midnight) the same NetworkOut jump occurs. What are my options to investigate it? The EC2 runs nginx and varnish only. Nginx access logs don't show…
Aleksandr Makov
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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) forticloud enabled 3) two syslogd server setup…
luca
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Varnish & iFrames - Each iFrame counts as a hit = poor performance?

I have a large Wordpress site (600-900 consistent users at all times) and about 6 months ago we setup Varnish. Our config uses 5GB cache and is stored in memory. When the site hits around 1500-2000 people at once then Varnish starts to throw 503…
user2766838
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Meaning of numbers on Watchguard Traffic Monitor

When looking at Traffic Monitor, you will see columns of numbers. However not all of them are apparent on what they are for. Unfortunately I don't have enough reputation to post images but I'll try to explain what I'm looking at. Can someone let…
user192702
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Will traffic control software cause tcp packets to be dropped

I am testing our client-server applications using NetLimiter which is a traffic control software. I found that, when client is receiving files from server and I use NetLimiter to set the download rate to a value such as 50K/S by clicking buttons…
Steve Peng
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Traffic shaping linux upload issue

Im currently working on a traffic shaping in linux. We have a client connected to a server running nat and dhcp. What we want to do is limit both the upload and download speed of the client/clients. However only download limit works. Download…
martio09
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High outgoing traffic on VDS Ubuntu 10.04.4

I have a VDS on Ubuntu 10.04.4. It works as HTTP server (Apache, Nginx, MySQL, PHP, Postfix), no FTP, root log in disabled. Suddenly, my VDS was blocked, because exceeded traffic quota (300 GB a day!). I have bought a few GB and check logs - nothing…
gvozd1989
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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 here is what is used as base data! It is my…
The Shurrican
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Traffic statistic for the executed programs

Some user launches a set of programs. I need to get statistic about traffic for the programs executed by these user. But not summary for this user, but for each program executed by it separately. Tell me please, how I can implement the task? OS:…
niXman
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Traffic from inside my network going to non-existent IP address inside my network, captured by router logs

I have a setup with RouterB sitting behind RouterA. RouterA sets RouterB's IP address to a public static IP 108.x.y.z, which it has been given in a block of addresses by the ISP. In RouterA's logs, I see this: src=108.x.y.z dst=192.168.0.28…
Sammy Larbi
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iptraf shows excessively high traffic, switch says almost no traffic

I have a weird problem with traffic here. My server is connected via 100mbit to a netgear switch. Now sometimes when I look at the traffic on the server using iptraf it reports in excess of 16000kbytes/s, that is 16 MB/s on a 100mbit line. Clearly…
Blubber
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How can i route Postfix through a socks proxy?

I have a mail server that uses postfix to relay all the outbound mail through Gmail's smtp servers. Now I have another internet provider and this one is through a SOCKS proxy connection. How can I setup my postfix server to route all its outbound…
nerdhacker
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