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6 views

Virtual Host Redirects and Packet Flow [migrated]

If I set up a virtual host in nginx, will all packets flow through that PC? Here is what is going on. I have an openwrt NAT router with two devices behind it, a server and a raspberry pi. I want both ...
0
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0answers
31 views

netperf issue on RHEL

Please help me with netperf issue. When I issued the following command on server (Red Hat Enterprise Linux), and got the following outputs. Tried to research online, but not much help. I was expecting ...
3
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0answers
25 views

linux tc htb bandwidth ceil being ignored and giving improper results

I'm setting up some htb packet queues like so: tc qdisc add dev eth0 root handle 10: htb tc qdisc add dev eth1 root handle 10: htb tc class add dev eth0 parent 10: classid 10:1012 htb rate 750kbps ...
0
votes
3answers
57 views

Architecting a web server hosting mixed small and large (100MB+) static content [closed]

I have the challenge of hosting about 200-1000 mp3 files, all in the 100MB+ size range. Furthermore, there are some smaller RSS files, and some smaller JPG files. All this is static content, no PHP, ...
2
votes
2answers
612 views

tc prio qdisc for priorization of mysql traffic

I am struggling with tc prio qdisc for a few hours now. I have read the lartc Documentation, Examples and HowTos, but this whole thing is kinda new for me and somewhat confusing :) So this is my ...
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0answers
48 views

Trouble using net_cls control group in tandem with tc for packet filtering

I'm having some trouble limiting network bandwidth using the net_cls control group in conjunction with the linux traffic controller (tc). I think I might just be confused about how I'm writing the ...
1
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0answers
58 views

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 ...
0
votes
1answer
65 views

Port level traffic monitoring (with graphs)

I'm looking to monitor traffic (incoming, outgoing and total monthly) on a few ports (mostly TCP) and I've done a ton of Googling around and everything leads to software I either can't manage to use, ...
2
votes
1answer
66 views

Is this reverse proxy configuration possible

I will first try to describe the problem I have. Let's say I have two different http servers running on two different ports behind firewall on my local machine: SERVER1: http://localhost:8001 ...
31
votes
3answers
2k views

ISP broadcasting all IP-packets, so I can see traffic of other clients from ISP

Recently I wondered why my router shows a constant downstream of 5 MBit/s, while I am downloading almost no data. I discovered the "packet logging" function of my router, with which I was able to log ...
1
vote
2answers
168 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 ...
14
votes
6answers
499 views

First days online : how not to kill your site

Suppose you have this fancy new site, with lots of data (like big images), and you're about to put it online. If you do "too much" publicity, during the first days, the site will be overwhelmed with ...
1
vote
1answer
69 views

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 ...
4
votes
3answers
794 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 ...
1
vote
1answer
471 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) ...
0
votes
1answer
66 views

Redirect all VPS traffic to another VPS

is there any way to redirect all traffic from one VPS to another one? Example, domain is parked with IP 1.1.1.1 but website, smtp, game server, teamspeak server is hosted on 8.8.8.8.. (Ofcourse I ...
1
vote
0answers
43 views

how to do a traffic analysis gateway (logging, content storage, reviewing, querying) [closed]

I'd like to set up a network monitoring server that will be 1) my LAN's gateway to the internet, 2) a VPN server for my devices running outside (e.g. laptop on public wifi, smartphone over 3G/4G ...
1
vote
3answers
454 views

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 ...
1
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0answers
54 views

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 ...
4
votes
3answers
487 views

Thousands of visits a day from untraceable traffic to website - Serious issue

At the end of January we noticed a spike in traffic to what JetPack stats says was home/archive page and what Google was classifying as going to /gaming/ which is an archive list in WordPress. This ...
0
votes
1answer
30 views

Redis: INFO doesn't report network/bandwidth metrics?

Is there a way to get network/bandwidth metrics from a given Redis process? Something I missed in the output of the INFO command? Some patch or compile time configuration option? Or would I need to ...
-1
votes
2answers
147 views

why the dns related traffic is so huge, is my server being hacked?

I have a vps, and have several site on it, usually these sites are rarely being visited except myself, thus i am shocked by one fact that is i visit the vps provider's portal and find i have used a ...
0
votes
1answer
93 views

Redirect traffic to another local machine requesting for a certain webpage

I need to redirect traffic, which is requesting for specified address(www.vlp.ee), to an another machine(10.251.36.5) located on my local network. The machine that handles the incoming traffic is ...
-1
votes
2answers
291 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 ...
0
votes
1answer
76 views

High-traffic, low disk utilization AWS solution [duplicate]

I've got a high-traffic (imagine tracking server) node.js server that's going to run on AWS EC2. There is no disk operation involved, but a lot of DynamoDB requests (in same zone), ElastiCache usage ...
6
votes
3answers
311 views

What is the difference between these 2 iptables rules?

Trying to allow incoming ssh traffic on port 22. Default behavior is to DROP all incoming traffic. I came across 2 articles on how to allow traffic. However, they are different. ## open port ssh ...
2
votes
3answers
427 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 ...
0
votes
1answer
29 views

Who has traffic data in the Registrar-DNS-Host chain

When you register a domain, typically the registrar will set it up on their default DNS servers and point it to their default web server to serve their default parked page. Obviously the web server ...
0
votes
2answers
379 views

Is there any open source software for QoS (traffic control)? [closed]

We are doing QoS (traffic control) for our server application. This server provides file download service for users and we want to give different users different priority and bandwith. Suppose the ...
-2
votes
1answer
90 views

Unusal internet traffic drop off [closed]

I'm after advice on how to approach a problem I'm having on my e-commerce site. Occasionally, the site suffers a levelling off of users on the website, compared to our historic traffic this is ...
11
votes
4answers
302 views

How to play traffic against a shadow network?

Sorry if this is a newb question... I've heard stories of Netflix and Twitter being able to duplicate web traffic amongst two separate infrastructures: one is the authoritative/trusted one that goes ...
2
votes
1answer
269 views

Mirroring Traffic with Nginx

I need to duplicate/mirror the traffic comming to my server/resource. I mean, I have server A and B and N (nginx) as webserver. All the traffic comming to N/resource --> redirect to both A and B Is ...
-1
votes
1answer
38 views

What can cause drastic traffic jump on server?

In the last couple of days, between 3AM and 4AM my server traffic jumps tenfold, from 20MB to 200MB. I've checked the access log, and while there is significant googlebot activity, the difference ...
1
vote
1answer
100 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 ...
0
votes
6answers
164 views

how to block all traffic to my website and only allow me to visit the site [closed]

my website is new and there is tons of things i want to take care of before i open the website to public but i'm afraid of that maybe someone will visit the website using google like they searched ...
0
votes
1answer
49 views

Traffic rerouting internally on LAN

I have a LAN with 10 PC's and 2 routers. One of the routers creates a secure connection to a different location. We do not rights to administer this router.The other router is my internet gateway. I ...
0
votes
6answers
2k views

How can i monitor internet traffic in my LAN?

I have a centOS box set up as a gateway with IPTables (among many things such as proxy cache using Squid). My LAN consists of ~30 machines, all connect to the internet through the gateway's eth0 ...
0
votes
0answers
81 views

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. ...
1
vote
0answers
62 views

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 ...
6
votes
4answers
6k views

Limit SSH traffic?

I would like to be able to limit SSH bandwidth on my server. I.e. each sshd process should be limited to 200Kb/s or something like that. scp has this functionality, but ssh, being more designed for ...
0
votes
2answers
266 views

High Inbound network traffic [duplicate]

I have a CentOS 6.4 64Bit Dedicated server used for hosting several websites. I recently checked the traffic graph for my server and discovered that the inbound traffic is very high (about 200-500 ...
0
votes
1answer
109 views

Possible causes of high download activity on network [closed]

We had an issue where we noticed approximately 170GB of data downloaded as http traffic over a one week period on our network. After locking down many services and running a hub as an in between ...
0
votes
0answers
75 views

limit bandwidth for each IP

I have a basic question. I use Frontpage to manage my website and I assume it uses HTML coding. I recently experienced a huge traffic coming to my website from few (say less than 10) IPs and shut ...
1
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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
55 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 ...
0
votes
2answers
586 views

How do I move an Amazon micro instance to a small instance?

I want to move my instance to a micro instance to a small instance but when I try to launch a new AMI based on my Micro instance AMI it only gives me the option for 64 bit instances. My initial ami ...
0
votes
3answers
1k views

Want to route all internet traffic through VPN

I want to route all internet traffic through a VPN client, so if the VPN somehow lose connection, nobody can find my real IP. So if VPS goes down, so my internet access. I'm using OpenVPN with this ...
0
votes
1answer
239 views

Best way to log internet traffic for office network via remote IP

We have a network of about 40 machines running either Win XP or 7 in our office via LAN switches into 1 x Netgear Router (WNDR3700). We have noticed recently that our local network has been added to ...
2
votes
1answer
139 views

Traffic statistics with iptables for passive FTP?

Basic traffic statistics with iptables are easy. One creates a rule with no target, e.g. iptables -I INPUT -p tcp --dport 80 Then, e.g. after uploading some data via http, one can read the counters ...
16
votes
3answers
58k views

How to filter http traffic in Wireshark?

I suspect my server has a huge load of http requests from its clients. I want to measure the volume of http traffic. How can I do it with Wireshark? Or probably there is an alternative solution using ...