Networking :: Configuring IP Address Fails?
Jul 22, 2010
I have an ARM based linux machine with kernel 2.6.10 .On reset it automatically gets the IP address 192.168.1.2 . I want it to wake up with address 192.168.35.133 .In /etc/network/interfaces was only an interface for loopback:auto loiface lo inet loopbackI have added:auto eth0iface eth0 inet staticaddress 192.168.35.133netmask 255.255.255.0But on next reset the IP was still 192.168.1.2
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Mar 3, 2010
This one has been bugging me for some time now. The network interface (as defined in Debian's /etc/network/interfaces file) fails to obtain an IP address from myuter. However dhclient br0 does.I'm using br0 since I run a XP virtual machine.network/interface changes are from a Debian howto on setting up the tap interface.As near as I can tell, the /etc/init.d/networking script basically calls /sbin/ifup -a. ifup is a binary.My /etc/network/interfaces file is:
auto lo
iface lo inet loopback
address 127.0.0.1
[code]...
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Nov 23, 2010
how to do surfing in ubuntu linux. Recently i took the new broadband internet connection, so i would like to configure and set the ip address in ubuntu linux, moreover i am able to connect to internet automatically in windows XP , here the ip address is configuring automatically. but when i started the ubuntu server, my ip address is not configuring automatically , i am unable to connect to internet in ubuntu server , which i have tested in specific firefox browser , saying that network was diconnnected, however i am able to see the network notification icon which has been displayed in top of the address bar , showing that ( X ) network disconnected.
how to get resolove this issue. and same way how to set and configure ip address in ubuntu server , so i should be able to do surfing in ubuntu linux. note : i think here broadband type connection is DHCP....
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Sep 1, 2011
I've a permanent USB running natty. Synaptic would like to upgrade the kernel packages, but it fails with cryptsetup failure.
Code:
How can I get around this? Is it enough if I remove cryptsetup? AFAIK, my devices are not encrypted (at least /etc/crypttab) is empty).
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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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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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Apr 24, 2010
Consider the following program:
Code:
#include <stdio.h>
#include <stdint.h>
[code]...
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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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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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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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Jul 10, 2010
especially to ubuntu server 8.04 because it doesnt use a GUI. Now my question is on how to insert IP address in configuring DNS server using bind9. Actually i'm using this guideBut i m not sure on how to insert IP addresses on the primary master and secondary master. Should I insert the Ip address that i found when i type ifconfig ? or Should I assign a new IP address.I have set up a webserver, DNS server, File server and mail server on a virtual box. For now, at first, im working with the DNS server or should I work with the web server first?what should I do?
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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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Aug 22, 2009
In windows i set up ip address , subnet mask , default gateway , Preferred DNS server and alternate DNS server , how do i do that in linux and where.. I have fedora 7 secondary OS that i sue for work...
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Dec 17, 2009
I have an HP Pavilion A6750F with an AMD Phenom 9650 Quad Core. 8 GB memoryThe NIC is a REALTEC Semiconductor RLT8111/81688 PCI Express Gigabit Ethernet Controller.The actual MAC address for the NIC is 00:24:21:55:DE:40I have loaded CentOS 5.3 on this host three of four times in various configurations and patching levels.THE PROBLEM: The system identifies the NIC as having MAC FE:FF:FF:FF:FF:FF.When this happens, the network connectivity obviously stops working.It identifies everything else OK, just maps the wrong MAC.I'm no sure how to troubleshoot this problem. I tried rebooting a couple times and once that fixed it. Usually it does not. I reloaded (gasp) Windows Vista on it and it worked ok.This last time, I reloaded CentOS it hung on the bootup (ASK ??), I reset it, it rebooted and everything looks ok; for now.
The system says it is presently using driver r8169
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Oct 6, 2010
In my job I use some ethernet embedded devices. They take an ip address from dhcp server or auto ip. I only know mac address.How can I obtain ip from mac address? In other words I need a rarp packet generator.
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Oct 28, 2010
I dont know for what reason, since 2 days, I started having this message whenever I try to start httpd.I commented "Listen 443", restarted httpd started correctly. I needed to comment "listen 443" in order to be able to start httpdWhat is strange is when I do
Code:
telnet mylinux 443
it responds
[code]...
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May 29, 2011
how to assign a address to my ethernet card all the options available
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Aug 3, 2010
I am struggling with what might be a minor problem. I have a home computer which I would like to setup as a webserver and hence give it a static IP address. It is connected to by wire to a router that is connected to the WAN via PPPOE. If I enable the network card on DHCP it works fine in browsing the web. If I now set it to static IP address it does not brown. Essentially I use the command setup to run the static IP setup. I then set my IP address to 192.168.254.X , the subnet mask 255.255.255.0 and the default gateway to 192.168.254.1 (this is the router connected to the WAN). I am able to ping the router, however when I try and browse on static it does not work. Your help will be most appreciated as this has taken way too long to solve and I have Googled as much without success.
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Jan 18, 2010
I have a dedicated control computer that can only be accessed with web-browser (with its ip-address). My DHCP-server gives a static ip-address to the control computer (base on its mac-address). Somehow and after some time the control computer looses its ip-address (can't ping to it any more) ... and then I have to reset the control computer to get it to pick up the ip-address ... this is not a good solution since the control computer is not nearby. is there a way to force the control computer to renew its ip-address based on its mac-address
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Apr 18, 2011
My security software has picked up multiple port scanning detections on my router/network and only the IP addresses are available. Is it possible to find out what the remote mac address is to see if the IP source has been spoofed? I've got a couple of different IP sources which were found scanning my ports.
I don't know if my IP and the remote IP address are on the same network or subnet for that matter which is the reason for my wanting to know what the mac address is to find out if its coming from the same remote machine.
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Oct 16, 2010
I have two interfaces, gprs0 and gprs1, both connected to the Internet from the same HW device, but through two different access points I just read another blog entry with a guy who had two network cards, using one as a back up - I guess this is a little similar, but should be much easier I am guessing - I am just lost Using ifconfig (IP address given by the network) and route to setup the connection,
ifconfig gprs0 10.20.30.40 up
route add default dev gprs0
ping 66.102.7.99 works fine
afterwards
[code]....
There is data being transmitted and received to device again, I guess the kernel just doesn't know where the incoming data should go without the correct routing tables? Or what exactly is going on?The question I have is how do I configure the device to do the correct routing, using only the ifconfig and route commands? Maybe too trivial for you guys, but I am getting tired of goofing around not knowing what is up and down anymore
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Oct 21, 2010
I have been trying to configure DNS using "bind", however i dont have a named.conf file in the vars and etc
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Mar 18, 2010
I am using Ubuntu 9.10. I just got a Linksys WRH54G wireless router. I want to protect my wireless connection by putting a password to it but when I enter the Router's default IP address (192.168.1.1) into my browser to open the 'Utility Welcome screen', the browser does not respond.
According to the Router's manual this is because PC' TCP-IP is not set to automatically obtain the IP address.
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Jun 11, 2010
I recently bought a dell inspiron 14 n4010 and i've installed windows and Ubuntu 10.04 in it. The problem is that i'm not able to access internet in my ubuntu. I'm using asianet broadband connection and i'm able to get internet in my desktop when i connect the cable to the system. But when i did the same with ubuntu 10.04 in my laptop, i'm not able to get internet access. I'm able to access internet in windows though. But i hate using windows.
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Nov 4, 2010
way of life and am having trouble accessing the internet.
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Nov 3, 2010
I am using 3 machines in a LAN connected through a hub. My intention is to have a end-to-end connection between 2 machines so that I can control delay/loss rate. For that purpose, I am using a 3rd machine with 2 NIC and intend to use a bridge and installing Dummynet in this machine to control the traffic between the other 2 machines.I have successfully installed Dummynet in the bridge machine. Now I require to configure Ethernet bridge in the machine. What is the process? Do I need a kernel compilation or can be done without it? read somewhere that recent kernels can be configured without recompilation.I am using Mandriva 2010 with 2.6.31.5-desktop-1mnb kernel.
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Apr 20, 2011
I have 2 pc's at home, neither v flashy but both more than capable of running this. Previously I had them both running XP SP2. One pc has 2 NICs in it and the second only one. So, PC1 (now running Ubuntu desktop 10.04) has the 2 NICs installed ...
1) A realtek NIC which is on 'eth1' and from which I receive internet connectivity from the router of this shared house. (2 other people connect their PCs to the internet via this router.)
2) A 3com NIC on 'eth0' which I have connected (using a crossover cable) to the Intel 'PRO100 VM' NIC on PC2.
Admittedly this took me some time to get half working. Currently I can connect to the internet through 'eth1' OR to PC2 via 'eth0' BUT NOT AT THE SAME TIME. However, If I disconnect one (by left clicking on 'disconnect' under the top of screen menu bar, then the other one will immediately work ... and visa versa.
I had this working when both PC's were running windows XP but now in trying to educate myself further I have installed Ubuntu on PC1 and am attempting the same thing. I refuse to accept that as alot of these thread responses state, that it 'can't be done'. Quite clearly it can be done since the physical connections and hardware are no different, its just about ensuring that the protocols are all correct and that I haven't done something stupid.
I am very keen to learn more about computer networks and equally keen to educate myself in the ways of Linux, in fact I am studying to gain a network qualification as we speak but at this stage its still a little confusing. I have learned an awful lot about the fundamentals of networking but the 'hands on stuff' is where I really need to test myself.
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May 11, 2011
I have just clean installed Ubuntu 11.04 on 3.06 GHz Dual core P4 with 2GB RAM
Code:
jim@venus:~$ uname -r
2.6.38-8-generic
At the same time I purchased a Gigabit NIC from D-Link, mostly because D-Link is a reputable brand and it said on the box compatible with 2.6.x linux kernal. The original NIC is still in the system and can be seen and is functioning as eth0. The system can see the new driver and the card, here is an extract from dmesg:
[ 1.401350] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
[ 1.401390] r8169 0000:02:02.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 1.401437] r8169 0000:02:02.0: (unregistered net_device): no PCI Express capability
[ 1.403219] r8169 0000:02:02.0: eth1: RTL8169sb/8110sb at 0xf8016c00, 5c:d9:98:45:8b:cc, XID 10000000 IRQ 18
and lspci:
02:02.0 Ethernet controller: D-Link System Inc DGE-528T Gigabit Ethernet Adapter (rev 10)
02:04.0 Ethernet controller: VIA Technologies, Inc. VT6105/VT6106S [Rhine-III] (rev 86)
and ifconfig:
eth0 Link encap:Ethernet HWaddr 00:1e:58:9a:1b:0e
inet addr:192.168.11.65 Bcast:192.168.11.255 Mask:255.255.255.0
inet6 addr: fe80::21e:58ff:fe9a:1b0e/64 Scope:Link
[code]...
so as you can see dead as a door nail, no lights on the card and not picked up by the switch. How do I make this operate?
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Mar 26, 2011
I am using ubantu 10 and broadband where userid and passwd has been configured in router box. So when I connect this from windows its automatically connected (using ppp0e and dhcp), whereas in linux it could not connect.
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Apr 21, 2010
is there a possibility to connect to my router admin zone from internet using wan ip? from lan I can do that using 192.168.x.x IP but when Im in work and something go wrong at home how can I check configuration of my router from outer world instead of lan?
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