Im reading this tutorial that is old(kernel 2.4) for iptables. It states that iptables should not be read at the application level of the TCP model because of packet boundaries. Does this still hold true today?
View 1 RepliesWhat application is more "low level" - apt or aptitude?
View 14 Replies View RelatedAre there any firewalls for Linux that will allow one to block certain ports for a specific application while allowing other programs to use the same port, or block Internet access altogether for specific applications?
Everything based on IPTables apparently can only block ports globally for all applications. SELinux is the only thing I've found so far that might have application-level Internet blocking capability, but it serves a broader array of security purposes and seems too complex for this task.
I don't need interactive popups like with Windows personal firewalls. I'm OK with having to edit a config file. This is for personal desktop Linux use, not a server.
I want a video editing software for combining two videos at frame level. I mean, for eg: to show double action at a time in movie. We shoot two characters separately. And then we combine it as a single video with dual role effect. Now, I think you understood my requirement. Plz anyone tell that type of application which suits my needs.
View 3 Replies View RelatedWe have zabbix Network monitoring tool installed on two servers 172.17.11.6 ( Master ) and 172.17.11.3 ( Slave ) RHEL 5.4 Servers with 172.17.11.4 being Virtual Ipaddress.We are trying to implement High Availability with Red Hat Cluster Suite.OS level Clustering has been implemented with following cluster configuraiton.
But we need to implement Application level clustering for Zabbix_server process which inturn depends on httpd and mysqld deamons to be running.So I have to check the health of mysqld and httpd with a shell script along with the health of zabbix_server process.Any good tutorials for this ? Any guidlines that I have to follow ?Here I may need to take care of following things when any one of the process goes down
1. Shifhting Virtual IP
2. Shifting /dev/sdb1 ( Shared drive to slave )
3. stopping other services on master
4. starting all the services on slave
I need to implement operating system level visualization to isolate a application on RHEL 5.5. Which one tool in following for implementation Linux-VServer, lxc, OpenVZ or anyone else.
View 2 Replies View Relatedhow to create iptables binary, that i can use in my android application for performing some firewall related functionality like restricting some websites/packet filtering. and will it be possible to alter the rules later?iptables binary will contain the rulesets stored and which can be modified. how this can be achieved.?
View 2 Replies View RelatedI've been able to kludge a kill script which finds the correct pid for the kdeserver (or gnome server) after my system comes up in run level 5 so I can drop back to run level 3 mode. Lots of experimentation showed me that using telinit 3 and telinit 5 would occasionally leave the video memory in a mess and I would have the black screen of death.
I set the security parameter setting to autologin for me since I am the only user of my machine, but I still have to kludge the default setting under sysconfig (the DEFAULT_WM) under Window Manager to pick a certain window manager, so it takes time to manually switch the desktop.
Right now I can leave the gui and drop back to cli, but painful experimenting showed me that killing the X server is a no no. Right now I kill the kde server, which sends the SIGTERM to the X windows manager, which then figures out that it has to shut down.
Questions: Is there a better way of doing this? Apparently openSUSE figures that we have multiple users logging into the gui desktop, so the gui is always kept running and a login window with the desktop manager option forces the user to login in. With autologin, this never happens, but no choice of desktop is possible on the fly.
Can some type of script be set up to painlessly enable this to happen? And what is the best way of bringing either the Gnome or KDE desktop manager down gracefully? I do get lots of error messages as the system attempts to recover and X shuts down. It appears that apparently the single user with autologin is left out in the cold.
I want to install a software called TinyOS which is an operating system designed for wireless sensor embedded networks in my account. The problem is it has instructions to install the software as an administrator since i'm not an admin of the department network i can not able to install. Is there any method to install this software as an user level rather than admin level.
View 3 Replies View RelatedHow can I adjust the levels at which the battery is considered to be critically low?ight now it seems this is set at 5 or 10%. I want to make it 20 or 25%This is for Gnome. I am using Lucid x86
View 1 Replies View Relatedhello everyone, im having a problem when my computer enters in the run level 4 as the default when i start slackware. The strange thing is that it not seems that is a X window problem, it looks like more like a configuration problem in some part of the kde script to initialize the log in, because if i manually start the X service it works fine, i dont know what is the source. Thank you in advance for the help.
View 3 Replies View RelatedI want to know what are the advantages and disadvantages for accessing spi(serial peripheral inerface )from kernel level and user level. like methods of doing it, speed ,memeory utilization etc
View 1 Replies View RelatedIs there a utility that can be used to view file information about a video file? Example: if the file was encoded with ffmpeg, and if it is H.264. In addition, what type of encoder was used for audio?
View 2 Replies View Relatedapplication to monitor application wise network usage?
View 3 Replies View RelatedI have a desktop with a printer attached on a wireless link.I have a laptop where I want to print from. The problem is the wireless link comes up only after I log on to the desktop.I would prefer the wireless link (and cups) to be up with out having to log on at the desktop.
How would the run level be changed?
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you can find a cutout of an output generated by "iwlist s" command for a cell. Does anybody know what Quality, Signal level and Noise level mean? What is the definition of them? I searched for it and could not find good information on it. What do these Extra:*** fields for? What does it show in the example above? How were those values computed?
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Hi Guys,
here is my scenario:
I am running F10 x86_64 with Nvidia Quadro FX 3400.
I installed the drivers and it worked just fine. No errors generated according to Nvidia log files.
However, while in run level 5 when I try to switch to run level 3 by typing "telinit 3" or "init 3" the X server goes down and I get a blank screen. Same thing happens when I try to switch to a different tty session by <ctrl>+<alt>+F2 (or any F key for that matter).
I also noticed that when I shut down my system I can't see any more the screen where services are shutting down and their status ([OK] or [failed]).
Would appreciate your help on solving this issue.
Hey Guys, I'am new here and request your help on this:
After installing emacs and a few dependencies on my RHEL 5, on restarting the system, the keyboard was not able to work. I restarted several times in vein.
However, when I start in single mode, it works perfectly. I have tried looking for a solution from google, but in vein.
Kindly help...
Regards, Andrew
I have a directory that has a another directory inside it. The top directory is rather redundant since it only contains the one other one. Is there a way to delete the top level directory and have the contents simply "move up a level"?
View 6 Replies View RelatedI've got a level one usb wifi model wua-0603. However, ubuntu 9.10 could not recongize it automatically. How can I install the driver for it ?
View 1 Replies View RelatedIs there an ink level app that works with network printers? I am currently using Ubuntu Lucid x64 with a Canon MX860 printer that was installed using this tutorial: [URL]. Everything seems to work fine (it prints) but I cannot get any of the ink level apps to work (Mtink or Inkblot). After doing some research, my conclusion is those apps only work with USB connected printers. Is that true?
View 3 Replies View RelatedI would like be able to access packets coming off the network with the hopes of coding a primitive packet sniffer for learning purposes. I would also like to be able to piece together my own packets and send them out on my network. Eventually, I would also like to write a simple firewall so I want the capability to drop packets as well as let them pass. I assume I will have to access the kernel with some system calls to do this, any one have any information or resources that could help me on this project?
View 1 Replies View Relatedif there is support for Network Level Authentication.
View 1 Replies View RelatedSummary: Several school networks in need of a fairly low-level way to log network use, especially Internet. Raw packet captures are too low (and big). Turnkey solutions we've looked at (Untangle) aren't really a good fit. This seems like a common issue. Detail: For legal reasons, we have to be able to roll back time every so often (ie. when death-threats are made on some web-forum). Currently, our traffic logs on Internet traffic are pretty high-level and aren't really useful to point a finger at the guilty or away from the innocent. We also like to keep our users honest by providing them with data about their own computer use (ie. what are the top 10 websites they hit).
I've been building up rules with iptables and ulogd to log the creation of new connections and save it to a PCAP formatted file for consumption by some very simple analysis scripts, or examination with Wireshark if required. Just logging new connections prevents the logging data from getting large in a hurry, but also doesn't give us a lot of information we would like (ie. the amount of data transferred). We've been examining products that offer fairly full-featured analysis, notably Untangle, but we do a lot of weird stuff (VOIP, VC, VPNs) with traffic flowing through very minimal hardware (PC Engines) running Linux. This is very inexpensive and very flexible, and we like it that way.
I have been trying to test the use of X window forwarding over SSH in a cafe. The Cafe's WiFi requires login via a web browser. Using Fedora 11 with Gnome on a Dell Latitude D600 laptop, the wireless works just fine. I am able to use a virtual terminal to ssh to my server at home. NX client/server works also. However, when I change to Run Level 3 on the Laptop in order to use X Window forwarding, wireless networking fails to function. Will wireless networking function at Run Level 3, and if so, how is that accomplished? Also, if I get Wireless to work at Run Level 3, will I be able to login to the free public wifi using Lynx or some other text browser, as I can with IE and Firefox?
View 7 Replies View Relatedhow to vary energy levels in gensen topology generator?seed parameter means?
View 2 Replies View RelatedI am learning about net filters and I am practicing some sample programs on it. I am very new to this and I have a general query. I got the packet to a desired function using PRE_ROUTING hook. Now how do I frame a packet from this point? I am just trying to simulate a echo client server program in the kernel level using these hooks. Any useful info on sockets in the kernel level?
View 1 Replies View RelatedWhat does the Quality, Signal Level and Noise Level actually mean? Which should I be looking for when looking for good APs?Is Quality the same as RXQ in airodump?
View 1 Replies View RelatedI am searching for a Linux user level command/utility to measure the network bandwitdth used by a specific process by usig its process id.i used different commands like, iperf, ntop, netstat etc, but it doesn't to meet my requirement. i need to observe network bandwidth used by only a specific process .
View 3 Replies View RelatedI've mucked through and figured out how to mount a windows share. I can access the folders I was looking for, but the windows share was not what I thought it would be. I was looking for the specific shared folder. Instead I got a root level parent directory that included the folder I wanted, and a couple others.
smbclient -L <ipaddress> gives me a parent directory on the root
First question: Can I mount a specific folder within a share?
Second question: Could somebody define share? I thought it was the specific shared folder, but that doesn't seem to be the case.