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 :: How To Pass Sed Address By Shell Variable

Aug 2, 2011

Code...

I am somewhat confident that there is a neater way.

Question: Does anybody know the answer?

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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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General :: Assign IP Address Using Command Line?

Mar 26, 2010

I am using internet in my home PC using Red Hat 9. To assign static IP to my linux machine I use "System Settings....> Network" and then double click on "eth0" to assign the static IP.Well these all settings by using GUI interface.Kindly guide me that if I use only command line interface "runlevel 1" then in that case which file should i edit and assign my static IP,Subnet Mask,Default Gateway DNS settings.2- 2nd thing is,is there any way that I may open web broswer in command line? or the administrator should only use internet on Run Level 5 ?

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Programming :: Write A Script StoredList That Takes Two Command Line Parameters?

Nov 28, 2010

This is the following exercise:Adapt this to write a script storedList that takes two command line parameters. The first parameter is the name of a directory, the second parameter is the name of a directory should be store i.e# ./storeList.sh /etc etcFilesListHow can you refer to the variables that represent the words passed in on the command line?

My Script's file:
#!/bin/bash
if test $# == 2

[code]...

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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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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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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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Programming :: Bind The Listening Socket To A Paricular Ip Address And Port?

Jun 26, 2011

I am learning network prgramming in linux in c,and try to build a server and in this server I want to bind the listening socket to a paricular Ip address and port.Bind function is showing error,I did not want to use wild card. Here is the code.

#include<stdio.h>
#include<sys/socket.h>
#include<strings.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<string.h>

[Code]...

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Programming :: Access At Physical Address - I/O Address In My Map Memory?

Dec 17, 2008

When I try to access at physical address (0xD0000), we known that it is necessary to convert physical address to virtual address using function IOREMAP(0xD0000, 1024) and return me 0xC00D0000.

Now our doubt is when I have a board with I/O in address 0x150, is it necessary to convert this address to other virtual address??? or with inb(0x150) return me state of I/O in this address? How can I known where is this I/O address in my map memory?

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General :: CentOS Command-line Program To Randomly Change MAC Address?

Nov 7, 2009

OS: CentOS 5.3 Enterprise Server
Red Hat Nash Version 5.1.19.6

I need to find a command-line program to randomly change my MAC address. I know on Ubuntu there is a program called 'macchanger'. And on Windows another one called 'macshift'. I just can't find one for CentOS 5.3 Enterprise Edition.

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Fedora Networking :: Command Line And Did A Couple Of Chkconfig Things And Entered Ip Address?

Jan 8, 2010

F10 trying to key in static ip address. Have followed guidelines on turningoff NetworkManager and turning on network. i went to command line and did a couple of chkconfig things and entered ip address, with subnet. when i do ip addr show i see under eth0 inet 192.168.3.11/32 which is 255.255.255.0, i'm pretty sure. i do not see gateway. when i go to system/network get prompted to log into root, network config window opens. icheck eth0 and the subnet mask is 192.168.3.1, the gateway, which is in correctly, in the gateway slot, as well. i still can not ping to from my xp based multihomed router.

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Programming :: Place Another Command Like Grep Or Cut In Address Field?

Jan 28, 2010

The thing is that the command for sed resembles the following

[code]...

Now if I want to place another command like grep or cut in the address field how do I do it. Actually I don't know the line number. The user has to give it as an input. How shall I do that?

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Programming :: Find The Mac Address For A Given Ip Address?

Feb 16, 2010

I am trying to find out the mac address of the eth0 port on linux probe. This port is controlled by kernal and hence I don't have control over it. How do I find out the mac address of this port ? Is there any system call which will take the ip address and will do the lookup on the linux's ip table to get the mac address ?

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Server :: Squid - Create A Exception For An IP Address To Pass Direct?

Feb 1, 2010

I need your help for a problem that it's happening in my customer. What I need is to change the configuration of a proxy, configured on Linux Cent OS v 4.3( explanation - see below) .My squid configuration's file it's like this:

[Code]...

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Networking :: Iptables Can't Port Forward (PAT Port Address Translation)?

Feb 20, 2010

I'm using a Debian servers, as router/firwall.. I've two ethernet interfaces into the server, one for wan and one for lan. The i use SNAT so my LAN clients can access the internet throgh the debian router. That is working... Now i want to be able to access servers on the LAN site from the WAN site, and i wanna use port address translation (PAT). I have a FTP server running on a lan server, so i'm trying to portward port 21.

iptables -t nat -A PREROUTING -p tcp -i eth1 -d (WANIP) --dport 21 -j DNAT --to 192.168.1.2:21

When people try to access my FTP from the WAN site, they are redirected to the local FTP server, and they are promted for crendentials, but when the credentials are typed, and the local ftp server should answer the wan request, the connections dies.

The wan clients are being promted for credentials, so they are redirected to the local lan server, but after that the connections dies, so i think there is some kind of nat problem, when the local lan server is trying to respond to the wan request..

Here i my iptables script:

#flush table
iptables -F
#input regler

[code]....

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Networking :: MULTICAST Address And Port - Socket Listen Only On Port?

Feb 12, 2009

I make an application on GNU/Linux which listening on a MULTICAST stream, so I open my unconnected socket, bind it on a MULTICAST address and a port, join the multicast group with the "setsockopt (IP_ADD_MEMBERSHIP)", then I receive datagram on my socket.

Now I've two different instances of the same application that run with their own MULTICAST address and port. And what I found strange is that, after a misconfiguration, I switch the ports, for example:

Emitting on 225.0.0.1/23451 and 225.0.0.2/23452
Receiving on 225.0.0.1/23452 and 225.0.0.2/23451

And my receiving part doesn't care about the MULTICAST address, it looks like the socket is listening on the port number only! I mean that the receiver [225.0.0.1/23452] take its datagrams from emitter [225.0.0.2/23452] and vice-versa!

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Programming :: Open Two Text Files - Read Them Line By Line And Update Parameters Of The 3rd File ?

Oct 18, 2010

I have two txt files containing x and y coordinates: xcoord.txt & ycoord.txt. I need to open them; read them line by line to get each coordinate; then each time I need to update Xs and Ys parameters inside another file called "dc.in" with the grabbed values.

Finally each time I need to run two exe files ( dc_2002 and st_vac) and produce corresponding output for each Xs and Ys ( dc.in is an input file for this exe files)

I have written the following code but it does not work:

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General :: Shell Scripting: Parse Parameters From Command Line?

Mar 12, 2010

myscript [-a a-arg] [-c c-arg] [-b] [-e] somedirectory

Given that I want my shell script be invoked at the command line using the above parameters - where [these brackets] denote that they are optional - what is the best method to parse them?

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Programming :: Create A Message Forwarder Program That Receive A Message On Port A And Pass It On T Port B?

Sep 6, 2010

We are trying to create a message forwarder program that receive a message on Port A and pass it on t Port B. Also receive a message from Port C and Pass it on to Port D as follows.

[Code]...

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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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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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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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Fedora :: Adding Variable Command Line Parameters To Desktop Launchers?

Mar 15, 2010

I have added an application launcher to my desktop and it works fine. However, I want to be able to feed parameters to the launcher before I launch the application. So, for instance, if the command is normally "/usr/bin/foo something" I want to be able to add the "something" parameter dynamically after clicking the launcher but before the application launches. Is this possible in Fedora?

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Ubuntu Multimedia :: RipperX Command Line Parameters Selecting Which Drive?

May 28, 2011

with the current Musicbrainz fiasco with Rythmbox and Sound Juicer I am now using RipperX. I like RipperX, but I would like to know if there are any command line parameters or some way of selecting the CD/DVD drive. It appears that RipperX can multi-task which would save me some time.

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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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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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