Recently a hav installed fedora and ns-2.34(after much effort).Now i want to generate VoIP traffic for wifi. give m url where i can find gud examples for generating VoIP traffic.
View 1 RepliesI need a simple traffic monitor for Linux, that counts the traffic in a specific wireless network because I have volume restrictions on that one.I tried it using the following iptables rule:
[code]...
iptables -m mac -A INPUT -p all --mac-source <mac-address> ! -s 10.0.0.0/8
where <mac-address> is the router's one. 10.0.0.0/8 is the local subnet. What I actually want is something like --routed-through <mac-address>. Also, is there some way to gather iptables's statistics? Or is there maybe another tool that does what I want (reliable)?
Recently I notice that when I'm connected to an vpn server (pptpd) and I'm using it as a default gateway my download and upload speed decreases almost to the half of the usual speed. I made a test using iptables in order to count how much GRE packets are generated (except the real traffic itself) in that way:
Code:
iptables -I INPUT -p gre -j ACCEPT
iptables -I OUTPUT -p gre -j ACCEPT
iptables -I FORWARD -s 172.16.10.101 -j ACCEPT
iptables -I FORWARD -d 172.16.10.101 -j ACCEPT
The first 2 rules match all GRE packets between the pptpd server and client, and the next rules - the traffic between the server and the client.
When I turn the counters to zero and begin to generate traffic (to browse, to download etc.) I see that the GRE packets are even more than these in the FORWARD chain.
So, my question is first of all is my test correct and is it true that so much gre traffic is being generated during the browsing (it becames clear that the traffic is double than if the pptpd wasn't used as a gateway) and if yes - can that traffic be reduced?
I would like to have all traffic from the ethernet connection out through the wireless (basically using the box as a router) however I am having some trouble doing this.
I have done this before on Windows however I am having some trouble doing this on linux, I have tried using Squid Proxy however I am having some trouble using configuring/using it.
I am using Yellow Dog Linux however I am willing to change to any other distro as long as it is compatable with PS3 (as this is what im using linux on)
The right direction with a linux Voip client that can make calls to a Microsoft MSN user.
I have looked at:
Sip Communicator
Ekiga
Empathy
GiZmo
Twinkle
and they dont seem to work well with MSN.
Is there another SIPS/VoIP program that can be used to speak to someone on Skype?
View 1 Replies View RelatedI have the standard wired LAN NIC and a wireless NIC installed. What my problem is, the wireless NIC will not take any internet traffic. The LAN connection gets it's internet from my LAPTOP with a Clear 4G module. I have a very strong wireless connection, but when I remove the LAPTOP from the network, I get nothing on my Ubuntu computer here, even though I have a solid connection. What is needed in the config to let the wireless run in the "back up" internet connection mode?
View 9 Replies View RelatedMy problem is that my wireless network traffic sometimes just stop.Like when I tries to update my system, update NetBeans or just download using Uget. I have no clue on what's wrong,Here is my system info:
Laptop model:
Code:
Lenovo R500
[code]....
We have something on our network that is reaking havoc with our content filter. I am trying to track it down, but so far I have been unsuccessful. We have approximately 500 devices in 100+ different locations spread across 9 states. Looking at each computer is not really feasible.
I need a machine that can sit in between our network and our internet connection and graphically monitor in real time and logs how much traffic each device is sending and receiving. It would need to sit inline so it has to have two nics and be able to pass traffic. The machine also needs to be transparent. Reconfiguration of our routers or workstations is not an option.
I have used ethereal and wireshark before. Ethereal may be a viable option, but wireshark seems to provide lots of information, but no practical way to make use of it. how to set up the box to be a transparent device on the network that will allow internet bound traffic to flow (freely)?
I need to set up my centOS computer as a firewall in my home network. Ive got 2 interfaces, eth0 and eth1. I want to allow and forward all traffic on eth0 and block all traffic on eth1 except ssh, ping(icmp) and DNS. How do I do this? Ive tried some editing in /etc/sysconfig/iptables but no luck.
View 1 Replies View RelatedI wanted to tell my server to block all traffic but US only traffic. So i followed this guide:[URL].. Now I know, it's the best way to help prevent hackers/crackers (doesn't matter to me what they are called. I just have to stop them). My server only deals with US clients anyways so might as well just start right there for my server's security before getting into the brute force and injection preventions. So I got it all done compiled everything moved to the proper directory. I then started to setup my iptables. Like so
Code: iptables -F INPUT
iptables -F OUTPUT
iptables -I INPUT 1 -s *.*.*.* -p tcp --dport 22 -j ACCEPT
iptables -I INPUT 2 -s *.*.*.* -p tcp -j ACCEPT
[Code]...
After seeing that i went digging in the code and figured it was something todo with memory allocation.
I am configuring syslog-ng on my server.
I suspect something to be wrong.
Is there a tool I can use in the shell to generate a log? So I can check that the log appear in the syslog file.
I m not able to find anything under boot.log file. Here is the output of boot.log files.
As you can see nothing is getting written inside the boot.log files .
How can i make all the events to be logged under boot.log file?
Code:
# ls -ltr /var/log | grep boot
-rw------- 1 root root 0 Jan 25 15:59 boot.log.4
-rw------- 1 root root 0 Feb 1 18:38 boot.log.3
-rw------- 1 root root 0 Feb 9 00:00 boot.log.2
-rw------- 1 root root 0 Feb 16 17:57 boot.log.1
-rw------- 1 root root 0 Feb 20 04:02 boot.log
Not only that but I need tons and tons of them generated, and I need it to be totally random each time.
Code:
matthew@mvm:/h/misc> cat a
#!/bin/bash
for i in {1..5}; do
echo $RANDOM
[Code]....
There you can see that it is the same number. It does that every time!! Grrr. The strange thing is each time I manually type [or copy & paste] it into the terminal, it gives random [not static, like I am getting from my script] results.
The reason I want this is because I am making a script where this line will randomly go up or down [depending on if the random number is 1 or 0].
I have collected the sa* and sar* files for the past two weeks , i need to generate the report for these files how can i do so i am using centos 5.5. assist me with a tool or a command to do the same.
View 6 Replies View RelatedHow to generate a list of all available man pages on a system?
View 4 Replies View RelatedFor using SSH, why does a host also need to have a public and private key? And how can I generate a public/private key pair for myself?
View 5 Replies View Relatedsystem debian php-4.x.x.src.deb. What actions should be performed that would build the binary deb with support memcache, mhash, and mcrypt? Assume that all the required packages of libraries installed on the system. system centos php-4.x.x.src.rpm. What actions should be performed that would build the binary rpm with support memcache, mhash, and mcrypt? Assume that all the required packages of libraries installed on the system. There is the software raid1 md0 Disc / dev / sda / dev / sdb. You must configure grub, that would have been able to boot from both drives. Assume that only one section ("/"). Generate for httpd ssl key and integrate into the system. to generate without a password or to provide a password script. Scan open ports and see what processes are installed network connections. What ports must be left open to normally closed firewall for full operation and setup http server (http, https)? Write a shell script that would produce an analysis of processes mysql and delete those that connection more than 5 minutes excluding system processes (eg replication), as well as sending mail warning in the log if an error occurs mysql string ABCDEFGH. Provide autostart at boot time (integration in init.d), protection against re-run, exception handling (when using lock files).
View 3 Replies View Relateddoes any one knows a linux based program/script that can generate html files based on directory structure?
View 1 Replies View RelatedI have seen how simple it is for Mac OS to generate pdf from a document without additional software to install. But I am looking for this functionality in Linux. One scenario, for example, if I have myDocument.txt that contain an article, how can I convert this into pdf? My next question is, assuming that myDocument.txt is a 3-paged document, will it generate a 3-page continuous pdf and not just 3 separate pdfs?
Any tools for linux that does this? (GUI is fine, but commandline is preferable)
I'm looking for a tool, command line or GUI, for Linux that generates memorable passwords An equivalent of what I am looking for would be passwords that the Mac Os X keychain can generate, something like apples12$/fourteen. Something strong, but easily memorized by a user.
View 2 Replies View RelatedList of 77 lines with the names of movies. For ease, let's say it's in a text file. What I want is a command line argument I can pass that'll read each line and pick one of those 77 lines at random, except I can't figure out how to do this. Is there a program I can just pipe the output of 'cat listofmovies.txt' to?
View 13 Replies View RelatedI'm trying to make sure that my laptop will suspend if I unplug it after the lid is already closed, and I believe that one way to accomplish this would be to simulate an ACPI lid event when the power adapter is plugged or unplugged. In order to do this, I need to find a command that will generate a fake ACPI lid event. Is there any such command?
View 1 Replies View RelatedMy application is an integration of all the open source components with customized heavily including OS. I would need to know how to generate license keys for my application.
Does any one have any clue?
When I attempt to run a ./checksetup.pl I am getting the following error message.
Creating /var/lib/bugzilla3/data/pdsphaseibugs/attachments directory... mkdir /var/lib/bugzilla3/data/pdsphaseibugs/attachments failed: Permission denied at /usr/share/perl5/Bugzilla/Install/Filesystem.pm line 385.
The script su to www-data and here is a copy of the directory the script is executed from :
fuidsg46:/usr/share/perl5/Bugzilla/Install# ls -la
total 276
drwxr-xr-x 2 root www-data 4096 2011-01-11 12:17 .
drwxr-xr-x 16 root root 4096 2011-01-11 12:17 ..
[Code]....
I need to generate 64-bit executable(utility) using PowerPC-linux cross compiler? i.e. Any options need to pass ppc-gcc other then "-m64". I have written a small test program on 64-bit server and generated 64-bit executable using gcc alone.
Ex:
#
file a.out
a.out: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
#
Actually I want to generate a executable(using PowerPC-linux cross compiler),which will run on 64-bit machines. In my Makefile I am trying to use CC = XXXXX/powerpc-linux/bin/powerpc-linux-gcc -m64 to ppc-linux-gcc,but giving error.
error: -m64 not supported in this configuration
If I remove -m64 its generating 32-bit executable.
write a script to generate a bar graph/chart/histogram etc that can make the analysis part simpler.
While dealing with so much data, i fear a manual approach could lead to human errors and hence thought that a script might be a better approach.
Why when I execute '# wvdialconf' in Puppy 4.3.1 no 'wvdial.conf' file is generated in /etc, or, anywhere else?
I did a 'find / -name wvdial*.*' and could not find it.
I ahve configured MRTG to generate bandwidth utilization graphs of Network devices.
I ahve configured 30 Network device ( Cisco Switches and Routers), For most of the devices MRTG is working fine but for some devices it is not able to generate log file and giving the following error:
I want to generate a temporary random list from a directory of files and then determine the size of an arbitrary block of files from this list (say 1-25 or 26-50) and add their names to a file along with some other info for each name. I can generate a random list with file sizes like this: ls -l | sort -R | cut -d " " -f 6 but i'm not sure how to add up the sizes of just a certain block of these files and at the same time save the file names.
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