General :: Add DNS IP Address Through Terminal?

Jan 11, 2011

In Red Hat Linux GUI interface i know that under Network Configuration there is a DNS tab and there I want write my DNS IP address. Well I want to add DSN entries through command line. which file should I edit and write

Primary DNS:
Secondary DNS:
Teriary DNS:

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General :: Setup Static Ip Address Via Terminal?

Jul 12, 2011

I imagine that there is already a thread for setting up a static IP, but I haven't been able to find it yet, so here we go.I have recently installed Fedora 15 on home machine. I have a very simple home network. Belkin wireless router with Window and Linux systems. The router is setup to be DHCP server. Router is setup to have lease time = Forever. Even with this setup, my router is assigning different IP address for my linux machine every time I boot the machine. So I would like to setup a static IP on my Linux.From my research so far, I'm suppose to make some changes to the file /etc/sysconfig/network-scripts/ifcfg-eth0. But I don't have this file in this folder. Should I just create this fil

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Ubuntu :: Terminal Sending Emails From Invalid Address

Apr 27, 2011

When I am using Mailutils to send messages to myself as a test, I get them but they are from <"ryandward@ryandward"@gmail.com> which is not a valid email address and I have no idea why my system is configured to send them from this address. This is indicative of some problem there is going on in my system.

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General :: What Is Production IP Address And Management IP Address In Servers

Jul 20, 2011

what is Production IP address and Management IP address in Linux servers? What is the significance of these two? When to use what?

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General :: Virtual Memory Address To Physical Address?

Apr 13, 2010

How can I get the physical address corresponding to a virtual address in linux by using /proc file system

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General :: Use Where Save For The Physical Address Going Towards The MAC Address

Jul 19, 2010

im REALLY new with linux and ive downloaded and installed Ubuntu...now heres the question.how do i set up WLAN internet use? ive tried using ipconfig/all on windows command but im not sure which info to use where save for the Physical Address going towards the MAC Address info

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Networking :: Networking Routing \ Use The Terminal To Assign Server Eth0 A Proper IP Address?

Jun 8, 2010

i know exactly what i need to do, im just not familiar enough with command line to do it properly.i have 7 computers.the first 4 are connected to a router via wireless at one end of the house. of the last 3 only 1 will be able to access the router via wireless, so it needs to share it's one wireless connection via ethernet. this computer i'm going to call 'server'server will have two IP'swlan0 192.168.1.6 this connects to the router that has internet access.eth0 i intend to have the following settingsip:192.168.0.1sub: 255.255.0eth0 will connect to a second router, where the cat5 cable goes from the server, into the internet port of the router where i will define the router's static IP:IP: 192.168.0.100sub: 255.255.255.0gateway 192.168.0.1i have then set the router IP for LAN handling as 192.168.27.1 and all ethernet connections will have a 192.168.27.x IP.

so i need to know how to, without a gui application, use the terminal to assign server eth0 a proper IP address, and tell the server to take the connection it has and share it through eth0 to supply internet for the last 2 computers via ethernet.i had it set up in this way with a windows machine being the one that had the wifi access, but i'd rather have it setup for the ubuntu server to do this task. security is imperative for these 3 remaining machines, so just getting 2 more wifi adapters for a connection to the initial router isn't an option.the 2 that connect to server do so through SSH and though server IS connected via wireless it only makes outward connections through

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General :: Terminal Emulator For GNOME With Display Features Like Mac OS X Terminal?

Mar 5, 2011

Is there a terminal emulator which works well in an Ubuntu desktop and provides the following features which Mac OS X's Terminal application has? Re-wrapping text when the window is resized.A Clear command which clears scrollback (as the shell clear does not) and does not clear the cursor's line (typically containing a prompt).

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General :: Make Linux Terminal Transparent With Terminal Command?

May 10, 2010

Is it possible to make terminal (xfce4-terminal) transparent from bash script?

Maybe by enabling compostion?

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General :: Launch A Terminal By Clicking On The Terminal Icon At The Top Of The Screen

Apr 22, 2010

I have a favorite REXX program called fv2. When I was a Windows user I had an icon for fv2 on the Quick Launch bar. Click that icon, and the program ran. Now, as a Linux (Ubuntu) user it is necessary to go through several steps to run fv2.

1) Launch a terminal by clicking on the terminal icon at the top of the screen. What's that area called? The GNOME panel?
2) Enter: ~/Desktop/RexxScripts
3) Enter: regina fv2

I run fv2 several times per day and would really like to have the convenience of a clickable icon.

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General :: Terminal Proxy Or Screen Without Terminal Emulation?

May 26, 2010

How can I make terminal applications immune to terminal emulator close, but still able to use all virtual terminal features?

egin{UPDATE}I want my terminal application remain alive and accessible if I accidentally close terminal emulator. This functionality is provided by screen and tmux, but they have issues with colors and they flush screen.Yes,I can run the shell inside screen, but I do not want the shell remain alive unless there is some other program running.

end{UPDATE}I see this must be something like screen, but without VT100 terminal emulation, something which will just apply whatever application does with "terminal proxy"'s terminal (like outputting something to stdout/stderr or using stty to set terminal options) to the terminal this proxy runs in.

// I know about screen and altscreen on, but it makes either this (screen with TERM=screen):

or this (screen with TERM=rxvt-unicode):

while I want this (rxvt-unicode without screen):

I have figured out that everything looks fine if I compile rxvt-unicode with USE=-xterm-color (in fact vim looks like on the second picture even without screen if I add this USE flag) and set TERM=screen-256color, but I do not like this workaround because it actually changes colors and I can't be sure that it will always change them only this way:

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General :: Run Programs From System Terminal Without Blocking Terminal?

Jun 19, 2010

Right now when I start a program from a terminal I can't use that terminal instance again until I close the program.

I am a new user of linux, and I want to know if there is a way to execute a program/application from a terminal without blocking the terminal until the program ends.

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General :: How To Redirect A Terminal/tty Output To Other Terminal/tty

Dec 14, 2010

hello
I tried to find a good subject but it was the best of mine, anyway I'll explain it here.
some time I do some thing like installing a new application in Linux terminal of my office PC but it take a long time and I have to go home during its installation or configuration process that it is not good to cancel it.My current solution is abandoning the process until next day. I wanted to know is there any way to redirect an input and out put of a terminal to another one, if it works I can continue my abandoned process by ssh to my Linux office PC and redirect that terminal to my new remote sshed terminal from my home.

Thank a lot for any help.

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Security :: Address Space Randomization On 2.6.28-15-generic Ubuntu 9.04 - Finding Base Address?

Sep 14, 2009

Im an academic (university networks and security lecturer) studying/teaching network and operating system security, and inspired by the work of Hovav Shacham set about testing ASLR on linux. Principley I did this by performing a brute force buffer overflow attack on Fedora 10 and Ubuntu 9. I did this by writting a little concurrent server daemon which accidently on purpose didnt do bounds checking.

I then wrote a client to send it a malicious string brute forcing guessed addresses which caused a return-to-libc to the function usleep with a parameter of 16m causing a delay of 16 seconds as laid out in [URL] Once I hit the delay I new I had found the function and could calculate delta_mmap allowing me to create a standard chained ret-to-libc attack. All of that works fine. However .... To complete my understanding I am trying establish where I can find the standard base address for ubuntu 9 (and other distros) for the following, taken from Shacham:-

Quote:

[code]....

/proc/uid/maps gives me some information but not the base address ldd also gives me the randomised starting address for sections in the user address space but neither gives me the base address. Intrestingly ... when a run ldd with aslr on for over (about) 100 times and checked the start point of libc I determined that the last 3 (least significant) hex digits were always 0's and the fist 4 (most significant) where between 0xB7D7 and 0xB7F9. To me this indicated that bits 22-31 were fixed and bits 12-21 were randomized with bits 11-0 fixed. Although even that doesnt define the boundaries observed correctly.

Note: I am replicating the attack to provide signatures to detect it using IDS, and for teaching purposes. I am NOT a hacker and if needed to could reply from my .ac.uk email address as verification.

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Ubuntu Networking :: Port Forwarding From Public Address To Private Address?

Feb 24, 2010

Currently my OS is Ubuntu 9.04 Jaunty Jackalope Desktop OS and my web server is Apache2. I have a public address 60.x.y.z and my pc local address is 10.x.y.z. I have a web app in my Apache2 which currently run in localhost(10.x.y.z).

I would like to enable the web app so that it could be browse from outside. I know there maybe some port forwarding process and some commands involved in order to do that. But I have no idea on the steps to do that.

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Networking :: Error Str2addr:Address 35 Outside Range Of Address Field Length 1?

May 12, 2011

I am working on implementing a protocol on NS2.34 .I really need help to solve this problem . Actually , I don't now whether the problem is generated by the tcl code or the c++ code when I run the simulation, I get this result :

Code:
num_nodes is set 64
INITIALIZE THE LIST xListHead
34
45
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 550.0
SORTING LISTS ...DONE!
code....

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Programming :: Pass Ip Address, Port Address And Some Parameters From Command Line?

Apr 1, 2011

I want to pass ip address,port address and some parameters from command line using python script.The ip address and port address for establishing socket connection and remaining parameters to execute different connection.

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Programming :: Shared Memory Address Area In Process Address Space?

Feb 21, 2011

if i attach a shared memory to my process whch part of the address space it will add(like stack, heap, data, code...).

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Networking :: Program To Assign Globa LIPv6 Address And Bind() To The Previously Assigned Address?

Apr 24, 2010

Consider the following program:

Code:
#include <stdio.h>
#include <stdint.h>

[code]...

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Ubuntu Networking :: Static IP Address And The Install Configures For A DHCP Configured Address - Network Not Starting

Dec 16, 2010

Version 10.04 LTS. Installed desktop version and network worked but I needed a static IP address and the install configures for a DHCP configured address. I tried changing to static address using the System->Preferences->Network Connections application but was unable to get the system to come up with the network up.

So I manually modified the /etc/network/interfaces and the /etc/resolv.conf files. I restart the system but when I do an ifconfig, I don't see a configured IP address on eth0 (only the loopback address). If I run /sbin/ifup eth0 everything then works fine and ifconfig shows the correct address bound to eth0.

My files are as follows:

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Ubuntu :: Firefox Address Box - Search For Something In The Main Address Bar - Input At The End

Jan 16, 2011

When I try to search for something in the main address bar It always adds the following with my input at the end

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Ubuntu Networking :: IP Address Set To Manual But Still Queries DHCP For Address

Mar 12, 2011

I'm running Ubuntu 10.10 and I'm having problems trying to assign it a static IP address. No matter what I put in the Preferences->Networking area (identifying the interface as Manual)... it still will query DHCP for an address if I run the dhclient command. I'm using to using ubuntu server where I just set the IP in the interfaces config file.

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Programming :: Physical Versus Virtual Mac Address And Mac Address From NIC's Firmware?

Apr 6, 2011

I need a small shell based program that prints the mac address of physical ethernet adapter from it's firmware. I need this utility for license generation and appliance activation. I have tried several example but none of them is flawless, The easiest method I have found is to parse the output of "ifconfig" command but it has also some drawbacks.

1. Firstly program should differentiate between physical and virtual adapters. Physical means installed on board(wired or wireless) or installed additionally. Virtual adapters are those created by VPN or created by virtualization apps such as VirtualBox/VMWare etc. I am not interested in virtual ones.

2. In case of more them one physical adapters(wired and wireless), it should print the mac address and description(name & vendor) of both/all adapters.

3. If media is disconnected then also it should be able to read the mac address and description(name, vendor) of card.

4. This one is bit complex. I know that 'ethtool' can show you the universal mac address but it's limited to use only 2 types of drivers and won't work in all cases.

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Networking :: Dynamic IP Address With PTR Record Versus Fixed IP Address Without?

May 7, 2010

I am running my own Postfix mail server. Some time ago I noticed that most email was rejected because of the server's dynamic IP address. So I got a fixed IP address. However then I noticed that some mails got rejected due to failing the reverse DNS check. So my ISP told me to get a range of IP addresses and they could then create a PTR record for one of those addresses. That is now running but it turns out that the IP address used for the PTR record is a ... dynamic IP address. So Spamhaus PBL rejects my emails again.

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Server :: Blocking Dhcpd Address Lease For Specific MAC Address?

Sep 4, 2009

I hv Cent OS 5.3 installed as server. I hv a network of approx 100 desktops and laptops. For a security purpose i want to block certain laptops from gaining a the network access using dhcp. Can we block the ip address leasing if a specific MAC address request for a ip lease?

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Server :: IP Address In Ubuntu \ Dont Find Inet Address?

Aug 4, 2011

If I give "ifconfig" in my laptop I get eth0,lo,wlan0.In that where do I find my Ip address in Ubuntu in 10.04. In eth0 I dont find inet address.Where can I find it?

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Programming :: Translate Virtual Address To Physical Address In Application?

Nov 18, 2009

I want to translate the virtual address to physical address in linux C application, how to do that?

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Ubuntu :: Firefox Address Bar Wont Resolve Address?

Feb 17, 2011

In firefox you can type ubuntuforums and it will bring you here via a google query.Mines stopped working the address bar goes to http://ubuntuforums/ and I get a forbidden page.I've check about : config and all is set fine

Code:
Keyword.enable = true
Keyword.URL = http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=

[code]....

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Ubuntu :: Give Server A Actual Address And Not Ip Address?

Mar 15, 2011

i am pretty much brand new to ubuntu i have messed around with it a little and have gotten my apache2 server up and running what i have some questions on is

1. How can i give my server a actual address and not my ip address?

2. Is there any way i can put like forum software on part of it? if so how?

3. What is the best way to write web pages i know some html so thats how i was able to write what i have now just wondering what best way is

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Networking :: Bind External IP Address To Internal IP Address?

Jun 7, 2009

I have a few external IP's assigned to me by my ISP. I have IPcop as my router/firewall. I am wondering how to bind 1 of my external ip's to my internal ip address. So I do not have to port forward, etc. For Example, 77.77.77.77 to 192.168.1.123 and on the server it see's the external IP address.

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