1
vote
2answers
255 views

KVM: All network traffic to one guest (firewall)

I am currently using a VMWare ESXi 5.5 server for my virtualisation. The network setup is like this: PFSense firewall is the center of it all and connected to: LAN Network (physical NIC 1 assigned by ...
-1
votes
2answers
336 views

Linux: How to find out which process curently creates the most network traffic?

From time to time connection to my server is very slow. This could be that someone is doing large uploads or downloads. Since I have a lot of software on my server I would like to find out, which ...
2
votes
3answers
493 views

How do I get the number of (currently) established TCP connections for a specific port?

How do I get the number of (currently) established TCP connections for a specific port? I have managed to get counters for traffic working by doing i.e for outgoing RTMP. iptables -N $CHAIN ...
1
vote
1answer
109 views

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 ...
1
vote
4answers
1k 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 ...
0
votes
1answer
57 views

Firewall traffic routing when visiting a specific website

I've got an odd question/request, here's what it is. We have a block of 5 public static IP addresses and there's a website that they are requesting that we try and set up so that when we visit it ...
4
votes
3answers
843 views

will heavy network traffic affect other connections on HP ProCurve V1810-48G?

I have a HP ProCurve V1810-48G switch with a few servers running Citrix XenServer connected to it (everything in one rack). The switch is almost in its default configuration (no VLAN, no port ...
0
votes
2answers
168 views

database for storing network traffic

I am developing a software to monitor network traffic and I need a database server that would be very fast in storing and querying packet header fields. I know there is a .pcap file format, but it is ...
2
votes
1answer
326 views

One terabyte of video served per hour - network limits?

Suppose in a peak hour there are 100,000 users that want to watch a video and that on average they consume 10 megabytes per video view. Might be more, might be less. For simplicity, let's say 1 ...
1
vote
5answers
1k views

Fancy graphing for network traffic

I'm currently looking for a solution that would allow me to easily graph traffic on a network. Basically what I'm looking for is anything that could actively provide graphs/charts/colors etc. for our ...
0
votes
1answer
77 views

why there is more than 60Gb incoming traffics on my eth0? [closed]

when i run nload -m , i find there is more than 60Gb incoming traffics on my eth0 , but no outgoing. i want to know is it a bug of nload or other possible reason ? thanks!
0
votes
1answer
2k views

How to monitor internet traffic on a Linksys E3000 router [closed]

I just got optical fiber installed in my place which gives me great download speeds. Now my ISP has a monthly download limit of 120GB, after that I gotta pay overages. Now my setup is like this: ...
1
vote
2answers
463 views

Is subnetting worthwhile\possible to seperate out VOIP in my situation?

I'm ballparking the numbers here, but I have 50+ machines and around 30 hard VoIP devices. Unfortunately, 10 or so PCs use the 100Mb pass-through port from the VoIP phones and 2 PCs use softphones ...
3
votes
1answer
2k views

WireShark - Capturing Packets on Multiple IP Address (FIlter)

I'm looking for the syntax to do a capture filter on WireShark, by capturing the traffic on several (specific) IP addresses. I understand how to capture a range, and an individual IP address. However, ...
0
votes
4answers
177 views

How can I log and view all traffic in and out of my server?

I've got a FreeBSD server running and it proxies some traffic to other IPs behind it, including a few dedicated ports for some services, and some webpages that are virtual hosts hitting the same ...
2
votes
1answer
159 views

Traffic used without any active connection!

Hi I've got a problem here confusing me, and thought Server Fault community could help. I've noticed a continuous traffic (1-10 Kbit/s) being generated on my desktop. It was running on Windows XP. I ...
4
votes
2answers
707 views

Monitor bandwidth per-process

This has been driving me nuts but my server has been using a highly excessive amount of bandwidth for the last two months, and I can't figure out how/why/where. This month, for example, it's used 210 ...
2
votes
6answers
1k views

Flow of packets in network

I can't visualize in my mind the network traffic flow. eg. If there are 15 pc's in a LAN When packet goes from router to local LAN, do it passes all the computers? Does it go to the ethernet card ...
3
votes
2answers
178 views

Is it feasible to poll traffic readings from Cisco switches more often than every five minutes?

Putting together a simple MRTG-like setup to monitor the load on our network switches. I've been told that Cisco switches are set up to be polled every five minutes, but we would like to get more ...
1
vote
3answers
267 views

How to collect concise traffic statistics on linux?

I need to have statistics divided by time periods, like this: time_1 - time_1 + 5mins from_ip1 > to_ip2 total_packages_size1 from_ip3 > to_ip4 total_packages_size2 time_1 + 5mins - time_1 + ...
0
votes
1answer
228 views

network architecture: inbound/outbound traffic from local to internet and vice versa

ive been reading about network architecture a bit, found an interesting paper from Sun Microsystems that, even though uses their hardware/software, gives a good idea about the basics of data center ...
1
vote
2answers
1k views

TCPDUMP = How to detect and analyse “Suspicious” Traffic to 192.xxx Addresses?

I just played a little bit with tcpdump (as I wanted to check why my mails are not getting send) and thereby discovered very strange and a lot of traffic to the "Private IPs". Please See examples ...
0
votes
1answer
72 views

Sporadic high traffic

Is there any software to handle sporadic high traffic web sites? My situation is the following: only two times a year my traffic spikes several orders of magnitude, i was wondering if some software ...
2
votes
1answer
829 views

Per user network traffic accounting under Linux

I have several users on a computer running Linux (Ubuntu Lucid to be more specific). I need to see how much network traffic they generate on a specific interface. Iptables can match outgoing ...
4
votes
2answers
342 views

maximum download limit

I'm writing software for bandwidth management in Linux. I use TC for bandwidth shaping, and it worked fine. I want to limit user bandwidth for a period of time. For example: For user 1, 100MB in a ...
0
votes
1answer
298 views

outgoing DNS flood targeted to non-ISP hosts

Below is the specific traffic monitored at the network perimeter and originating from a user PC on Vista platform. My question is not about the effects of the flood, but about the nature of the ...
5
votes
5answers
2k views

Generate a limited amount of random network traffic between 2 hosts

I'm trying to find a utility that will allow me to generate a constant flow of random network traffic at a specified rate between 2 hosts. The utility needs to run on Windows and OSX. I've tried iperf ...
1
vote
3answers
287 views

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 ...
2
votes
4answers
441 views

Copy files over network

we use one windows 2003 server to sync files between two other windows servers. I assume that the whole traffic goes through the server initializing the sync. If so, is there a way to trigger a copy ...
2
votes
2answers
376 views

Giving a priority of network traffic for one application over the other; in practice (windows)

Two applications perform network i/o concurrently. For instance, Firefox and Download Accelerator. The idea is to let serve the queue of packets of Firefox prior to serving those of Download ...
1
vote
3answers
213 views

What amount of traffic is normal

For a Ubuntu Samba file server running Apache and an ftp client what amount of network traffic would be normal when no users are connected? I am strictly a Windows admin and have just installed ...
5
votes
4answers
1k views

Traffic Management recommendations [closed]

What's your strategy towards traffic prioritization/management. I am not really to just get a list of packet shaping solutions. Instead, I would like to get recommendations about traffic management ...