Networking :: Existing Application Models For NS2 (Network Simulator)?
Jun 22, 2010
I am an undergraduate student doing some work in Cambridge, MA on NS2. As my project/paper relates to simulating different types of applications like FTP, RTP, and SIP, as they relate to commercial products (VoIP, email, bittorrent, http) and congestion, I was wondering if anyone knows of any simulation models already available besides the example ones released by NS2 and the contributed code found at [URL]. Also, does anyone know of any tcl scripts that simulate specific applications (including the transport layer and Internet layer)? I am using Ubuntu 10.04 LTS and NS2 2.34
I need to refer a sample code to develop a network simulator using c++/system c as back end and perl scripting asd front end.CAn anyone please refer to me any websites were this kind code is given.I do not want to use this otcl script language so wothout this is any code available just for sample so i wii know were to start and develop my own code.
I have an academic simulator software and I want to visualize its output at the same time the simulation is happening. However I want to separate visualization and simulation modules. The simulation data will be held in an array of a size around 0.5M and will be read only to visualization software (but updated regularly by simulator).
- In past I have used shared memory to share small variables among two applications.
- TCP/IP adds the option of having the simulator and visualization applications on separate machines but the implementation will be more difficult.
- I have also thought about an abstraction layer which allows to replace the communication/interconnection layer with other methods later (file/network/shared memory/pipe).
I have to install GrooveNet which is a vehicular network simulaor. I have downloaded it from GrooveNet Vehicular Network Simulator :: University of Pennsylvania & Carnegie Mellon there is a set-uo guide but I have a problem. I have to open the project within KDevelop or go to the src directory and type "make". When I try to build the project the answer is this one: make: *** No rule to make target `/usr/lib/qt3/mkspecs/default/qmake.conf', needed by `Makefile'. Stop. what can I do?
i have a doubt about NS3, can use the actual network card of my computer in the simulator NS3, that is, if my network card can behave as programmed into the simulator.
This is what I have... An existing network with about 2 dozen Linux servers, varied distros, and about 3 dozen workstations, the vast majority of which are Windows XP pro, but there is one Windows Vista business, two Ubuntu, one Mac, and soon to be a Windows 7 pro. User accounts vary across all servers. There are 4 samba servers hosting different file shares.
This is what I need to do... I must centralize the user password database for all workstations if possible, if not, at least for all the windows workstations. I also need the user passwords for the samba file shares to be synchronized with those of the workstations. I need to have the workstation/file-share passwords expire every 90 days. I also must centralize the user passwords for all Linux Servers, but this can be done separately and I know there are tools like Kerberos available for this.
Is this possible to do with so many user accounts already existing in so many different places on the network, or would this "centralized authentication" require new user accounts to be created across the network?
If this is possible, what tools/services are the easiest and fastest to set this up with? As usual, I have an urgent deadline looming over me for this project and am trying as hard as I can to avoid the company slipping back into the realm of M$ or other proprietary software to accomplish this. Keep in mind, I don't need any additional services, such as roaming profiles, or anything like that. I really just need a centralized password database that can be referenced by Windows, and the Samba file shares.
I have an existing network that connects to the 'net via a Linux-based firewall. That system has two ethernet interfaces: one to the DSL modem and the other to the internal switch. Future plans were for adding a second "internal" interface with the idea of moving servers into that (think DMZ). But while I was planning for that, the missus has decided she wants to pick up a Windows laptop and would like to be able to use it wirelessly at home. I have access to a (free!) Netgear WGR614L and was hoping it would work. Unfortunately, I'm unsure how to add the wireless capability to our network.
Questions:
Is it best -- or even possible -- to use one the wireless router for this?
Is it possible to merely hang the Netgear router off the internal switch and set it up for the wireless users? Or...
Would I need to add another ethernet interface to the firewall and hang the router off that? The address of this new interface would act as the default route for the wireless users. Then I'd need to (I assume) add more rules to the iptables configuration to deal with the new network. (I sort of like this option -- it it's actually feasible -- as I can easily shut down any wireless access by logging into the firewall and stopping the interface connecting the wireless router.)
I've taken a look at the setup guide on the CD that came with the router and it assumes that you have a modem connecting your PC to the internet. The instructions have you placing the wireless router between the modem and that PC. For our network, that would have the wireless access coming into the "dirty" side of the firewall. (Not what I would like.)
I have a client that has a basic network that uses comcast cable. He bought a NETGEAR N300 wireless router which has a 192,.168.3.X network and he attempted to add it to his 10.10.10.X network and all is fine. He laptops and such can get to the internet fine. The issue is he cannot get to any of his devices on his 10.X network. I have looked at his comcast router which is controlling his 10.X network to see if I can add addition routing to his 192.X network. but didnt see anything. I also am not to familiar with the N300 wireless router. I was going to have the wireless DHCP turned off and some get it to pull the DHCP stuff from the comcast side but dont see any area to do this.
I have a PC for windows connected to my printer. On another PC I just installed & using 10.04 LTS. First of all I am unable to get Ubuntu to find, recognize & install the DCP 395 CN. Linux appears to recognize the MSHOME but does not have my printer listed in the Brother models? This is a wired system consisting of 2 computers through a dsl broadband router. The DCP 395 printer is connected to the Windows PC by USB, if that makes any difference . Would like to connect to the MSHOME or establish a Network that will work.
I have problem in installation for CNET simulator for wireless network cnet-3.1.4. I have fedora 8 . The problem is when I execute the make command step. I have already intalled tcl/tk 8.4 But still there is an error. The error I get is cd src && make
I try to understand the way the network-admin tool retrieve and set information about the network connections, and after reviewing thee code, I still dont undertsnad how it does it. I thought that it should use maybe linux commands such as iwconfig or ifconfig or by using ioctl for get/set the parameters of the wireless, but I did not find such things in the code. It also does not use AT commands for modem devices parameters.
I see that it uses liboobs files, but after veiwing the code, I still don't understand how it works.
These question comes since I work on application which connects to wireless devices (possibly several wifi and modems devices can be connected ), and I try to think how to set/get the network parameters, I thought that a good start will be to look at how network-admin works.
How can I force a Wine application (or Wine itself) to use a specific network interface? I have installed hamachi and am trying to play starcraft over virtual LAN. However, when I run Starcraft with hamachi running, it does not work. I have now determined that hamachi creates a network interface called "ham0". How do I force Wine/Starcraft to use the "ham0" network connection? I have looked into forcebindip but it crashes on wine.
How can I force a Wine application (or Wine itself) to use a specific network interface? I have installed hamachi and am trying to play starcraft over virtual LAN. However, when I run Starcraft with hamachi running, it does not work. I have now determined that hamachi creates a network interface called "ham0". How do I force Wine/Starcraft to use the "ham0" network connection?I have looked into forcebindip but it crashes on wine .
is there any way to monitor each application network bandwidth usage ?I've used gnome-system-monitor, but unfortunately it just show the total network activity
The cryptographic underpinnings of the Internet, as presently constituted, are messy, chaotic and rather randomly constructed. And that infrastructure is not only ripe for a variety of attacks, but is not easily fixable, a group of experts said Friday. At a forum on browser security sponsored by a Washington policy think tank, a group of technologists and policy experts from industry and government outlined the serious architectural and implementation problems with SSL, the certificate authority infrastructure and the way that browsers handle certificates. It was not a pretty picture. The problems extend from the way that CAs issue certificates to how certificates are handled by the major browsers to the way that attackers are able to take advantage of the weaknesses throughout the system.
I am trying to view jMol models via firefox but they don't show up. I assume that's due to the IcedTea java plugin. I cannot get firefox to use the sun java plugin.
I'm running fedora 10 on a virtual machine. I'm trying to create a kernel so that I can use the imaging software FOG on multiple computer makes and models. I'm pretty new to linux so I'm sure I'm missing something I just need someone to point me in the right direction. I have installed the "Development Tools" and qt3-devel. When I run make xconfig or make menuconfig it errors out. The following is what I get...
make xconfig [root@localhost linux-2.6.26.2]# make xconfig scripts/kconfig/qconf arch/x86/kconfig init/kconfig:514: can't open file "usr/Kconfig" make[1]: *** [xconfig] Error 1 make: *** [xconfig] Error 2
New applesmc kernel module with dynamic configuration. The amount of machines supported by this module has increased rapidly over the past years, and the detailed driver support of the many flavors is quickly becoming a problem. The attached dkms package contains a new, dynamically configured driver which fixes a number of outstanding issues:
* Support for all new models since MacbookPro 6. * Support for variable number of processors in the MacPros. * Handles the odd temperature sensor types found on new models. * Fixes minor read problems on many intermediate models.
And, of course, all models back to the MacBook1,1 should work at least as well as before. Please test and report the outcome in this thread, stating your machine model and a simple "OK" or a description of the problem. As soon as things seem to work as expected, the patches will go upstream.
I wonder what are models and makes of good internal SATA or IDE DVD-CD burners. I'd like to get one for my desktop tower since I've only had CD burners before. For burning, I use k3b and I'd be doing more CD burning than DVD burning but would also use the burner to watch a DVD movie now and then.
I'd prefer one that isn't too fussy about media. In other words, I'd be happy to have one that takes and plays nicely with commonly found media, rather than with exotic, hard-to-find media. And a burner that handles a good range of the various DVD formats would be nice too.
I don't need LightScribe because I figure it will only work for Windows users. Yes or No? [But does Linux have some package that lets this LightScribing work?]
[My OS is MEPIS 8.5, a Debian-based OS which uses Synaptic for package downloading and installation.] Tell me what good luck you've had with burner and tell what makes/models to avoid.
I have an existing unix user that some how didnt make it into the copy over to our LDAP server. How do I add an existing unix user to an existing LDAP directory? Will ldapadd work? I was under the impression ldapadd required an ldif file to work properly.
