Networking :: Cannot Get DHCP3-Server To Work Under Ubuntu 9.10

Jan 7, 2010

I've never had this much trouble, but maybe it's because I have not setup a dhcp3-server in some time.

My server has three NIC cards. The Internet connection is on eth2, and I'm trying to get connect other computers to the server through eth0.

It's suppose to be relatively easy, unless I'm assigning specifics, right?

Code:
#
# Sample configuration file for ISC dhcpd for Debian
#
# Attention: If /etc/ltsp/dhcpd.conf exists, that will be used as

[Code]....

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Ubuntu Servers :: Dhcp3-server Fails To Start - Can't Open /etc/dhcp3/dhcpd.conf: Permission Denied

Oct 1, 2010

I installed dhcpd using:

Code:

Now when I try to run it, I get this weird error:

Code:

The error was:

I changed permissions to 777:

Code:

To no avail!

It's got something to do with AppArmor.

I don't think it is installed on this system:

Code:

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Ubuntu Networking :: DHCP3 Server Won't Start?

Feb 1, 2011

I have followed the ubuntu guide for setting up a dhcp3-server server for my internal network, I have installed dhcp3-server, configured it refuse to start, here are some background:This is my /etc/default/dhcp3-server:

# Defaults for dhcp initscript
# sourced by /etc/init.d/dhcp
# installed at /etc/default/dhcp3-server by the maintainer scripts

[code]....

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Ubuntu Networking :: Disable Dhcp3-server On Startup?

Jun 26, 2010

I have an old Linksys WUSB54G USB wireless card lying around, and occasionally I like to use it as an access point for my laptop. For assigning IP addresses I use dhcp3-server. The only problem is that the server attempts to start itself up on boot, which I do not want- I want to start it up manually if I need it. how to disable this service on boot?

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Ubuntu Networking :: Dhcp3-server Is Not Committing Correct Dns-address To Win XP Client?

Oct 15, 2010

I'm troubling setting up my dhcp3-server.Although I've configured "option domain-name-servers 192.168.1.1" in my dhcpd.conf my windows-xp-clients dns-server address is set to 192.186.1.1.This is strange! All other things seem to work correctly.This is my dhcpd.conf:

Code:
ddns-updates on;
ddns-update-style interim;

[code].....

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Networking :: DHCP3 Server - Setting Double Range Of IP Address

Apr 27, 2010

I would like to set a double range of IP address with my DHCP3-server. Now, I have eth0 (which is my only network card) with this IP address : 172.16.93.1 and I have created a second interface eth0:1 with this address: 192.168.3.1. The goal is to give an IP address 172.16.93.X to phones (with option 66) and the IP address 192.168.3.X to the computers.

This is my DHCPD.conf :
ddns-update-style none;
option domain-name "mycompany.com";
option domain-name-servers 172.16.93.1;
default-lease-time 3600;
max-lease-time 2347200;
authoritative;
log-facility local7;
option ip-forwarding off;
default-lease-time 20;
max-lease-time 20; .....

Right now my DHCP server work fine, (I means, no error at the startup ) but the server give always the same kind of IP address, whatever if it's a phone or a computer. I notice something "wired", if I put the :
subnet 192.168.3.0 netmask 255.255.255.0 {
range 192.168.3.100 192.168.3.199;
option routers 192.168.3.254; }
(Which is first in the dhcpd.conf) after the "subnet 172.16.93.0 netmask 255.255.255.0", the server will give IP address 172.16.93.X at all the clients. Is it possible to give more than one IP range with one network card at the same time? And how set the option 66 to only give IP address (172.16.93.X) to the phones?

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Ubuntu :: Can't Start Dhcp3 Server Errors Are Come?

May 3, 2011

I'm using ubuntu 10.04, Im going to setup LTSP sever, But I cant start dhcp3 server this errors are come, how can I fix this this error comes when I tried to start dhcp3 server

lachitha@lachitha-desktop:~$ sudo /etc/init.d/dhcp3-server start

[Code]...

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Server :: DHCP3-Server Giving IP Addresses Depending On MAC

Apr 11, 2011

I have dhcp3-server (isc-dhcp-server) installed on my Debian and now I got a question about how it's giving the IP addresses to new devices.

For example: I connected my laptop and dhcp server gave me 192.168.1.5 address. Will it always give me the same ip address when I connect my laptop or it will eventually change after some time (week-month)? If it's not changing it, then I am wrong about this.

BUT...If I am somehow correct and if it will change in a week and give me another random (like 192.168.1.8) IP even I won't change my laptop network adapter, is it possible to configure dhcp server to always give same IP address depending on what MAC it is?

To make it clear, I want that when I connect new device (new laptop/pc) dhcp server would give it random IP but same time it would note the MAC address and never change the IP on that MAC.

I know about MAC filters, but setting filters is when you know MAC address since beginning and want to assign IP for it, but in my situation I don't know the MAC address.

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Ubuntu :: Dhcp3-server On Computer Doesn't Respond?

Sep 11, 2010

I need to create a network boot from 1 laptop to another, with a crossover ethernet cable between them, no routers no nothing, my computer is supposed to be the server. I followed half dozen tutorials over the internet but I think my major problem is with the dhcp serverfollowed this tutorial[URL]but when the client boots it makes several dhcp requests but doesn't respondwireshark capture looks something like this until the client times out

Code:
1 0.000000000 0.0.0.0 255.255.255.255 DHCP DHCP Discover - Transaction ID 0x200d8ad

[code].....

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Ubuntu :: Server DHCP3 Stopped To Give Addresses / What To Fix It?

Mar 7, 2011

I'm writing because my ubuntu server has started with troubles .
It's running Linux 2.6.32-29-generic-pae kernel for ubuntu server 10.04 and after the last update it stopped from giving addresses on clients connected.
Dhcp3 server it's running and the conf files are fine, but i can only use static addresses assignation now...
Also MYSQL has stopped working (installed for Bacula purpose) but now the dhcp problem is the biggest issue. I work in an office where dhcp is fundamental, too much clients (about 15) that are personal laptops also (so static assignation for clients is not a good choose).
Please any one could help me? It's two days I'm trying to figure it out without success.
also tried removing and reinstalling dhcp3-serer...no way.
Here are my conf files code...

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Ubuntu Networking :: DHCP3 Reservations Being Ignored?

Mar 30, 2011

Have DHCP3 running on an ubuntu server. Using config of the below but the 10.1.1.2 address is being given to a windows pc (which does not have that MAC address). Tried getting windows to release ip address, then clearing the lease file and restarting dhcp3 service, then renewing dhcp request from windows, but address 10.1.1.2 is still given.

Code:

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Ubuntu Servers :: Setup A DHCP3-server On Brand New Learning 11.04 ?

Jun 3, 2011

I been trying to set up a DHCP3-server on my brand new learning Ubuntu 11.04 server. I can connect when i put the IP infomation in manually, so I know everything else is working, just got to fix the DHCP problem before I put the machine into production on my home LAN. Can someone tell me if these config files located at /etc/dhcp3/dhcpd.conf and another at /etc/default/dhcp3-server are correct? eth1 is the NIC that will be the LAN side of the network, I double checked that...

Code:
/# A slightly different configuration for an internal subnet.
subnet 192.168.10.0 netmask 255.255.255.0 {
range 192.168.10.10 192.168.10.200;
option domain-name-servers 8.8.8.8, 8.8.4.4;
option domain-name "linuxrouter.local";

[Code]...

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Debian Configuration :: DHCP3 Server Giving Wrong Ip Address?

May 20, 2011

Hey guys. I have a client computer PXE booting from my host computer and it is supposed to give the client the ip address 172.16.0.100 however instead it gives it the ip address 172.16.0.208.

I have this set up working with two other computers and there is no noticeable difference other than mac addresses for the network card.

Here is an extract from my '/etc/dhcp3/dhcpd.conf' file...

ddns-update-style-none;
option domain-name "example.org";
default-lease-time 600;
max-lease-time 7200;

[Code]....

I have quadruple checked the mac address of the client and it is definitely "00:07:E9:32:16:81" so why is it not giving it the IP address that I have specified?

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Ubuntu Networking :: Restart Dhcp3 After Changing Dhcpd.conf?

Jan 17, 2010

ver: 9.10 how do I restart dhcp3 after changing dhcpd.conf?

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Ubuntu :: 10.4: Networking - Using Bind9 And Dhcp3 - Properly Configure Static Wired Connection?

Jun 15, 2010

v10.4 {I have completely re-edited this thread because I have started over fresh. I am no longer using bind9, but now using the installation-defaults nameserver and dhcp and trying to get a handle on how things ought to be setup properly. My previous attempts was a disaster.}

Coming fresh out of a newly installed 10.4, I obviously was able to get network connectivity but then I ran into trouble the minute that I tried to change eth0/eth1 connections via network-manager's applet. What I found was, that when I attempted to define static connections, all bets were off. It seems that once one attempts to change eth0/eth1 which are wired devices, I was no longer able to recover my network connectivity!

I was however able to setup a wireless connection, so in this way I was able to get back network (and Internet) connectivity, and write this thread on this forum. I notice also, that there is no longer 'Networks' in the System->Administration menus! Geez, what the hell is going on? how to properly configure my static wired connection? Networks in 10.4 have really changed alot!

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Ubuntu Networking :: Deleted Dhcp3-client By Mistake - No Internet Access And Cannot Use Synaptic

Aug 25, 2010

Had problems with internet and deleted this by mistake now how do I get it back? note that I have no internet access so I cannot use Synaptic.

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Ubuntu :: DHCP3 Init.d Script Not Found In 11.04?

May 10, 2011

This is kinda strange, i just installed dhcp3-server in ubuntu 11.04 , but when I try to find the starting script in /etc/init.d/dchp3-server start, it states

bash: /etc/init.d/dhcp3-server: No such file or directory

I have installed the dhcp3-server,howcome there is no script for executing dhcp server?

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Networking :: Connect With A Server Apart From The Server Which Work On?

Feb 21, 2011

I need to connect with a server apart from the server which I work on. What is the command for this?

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Ubuntu Servers :: Ltsp Dhcp3.conf Error?

Dec 21, 2010

I have been at this for what seems like forever but i am getting somewhere after many errors i got dhcp3 reading the file and everything is almost there but now i got an error i cannot figure out.first my config file

HTML Code:
shared-network local {
subnet 192.168.0.0 netmask 255.255.255.0 {

[code]....

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Ubuntu Servers :: Display The Addresses That Have Been Issued By My Dhcp3?

Jan 1, 2011

I want to display the associated host name with each address.

I've found the /var/lib/dhcp3/dhcpd.leases file, but it appears to have an entry for every time a lease was issued so it's hard to tell which ones are currently active.

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Ubuntu Servers :: DHCP3 Won't Start / Restart - Sort It?

Feb 7, 2011

Ubuntu 10.10 w/ dual NICs

here's my etc/network/interfaces file code...

Here's the problem -- DHCP wont start and throws the error "Can't create PID file /var/run/dhcpd.pid: Permission denied." Somewhere I found a post that indicated that the following corrected the issue (I dont really know why):

ln -s /var/run/dhcp3-server/dhcpd.pid /var/run/dhcpd.pid
dhcpd3 -cf /etc/dhcp3/dhcpd.conf eth1

When I do the above DHCP will start (in theory, at least no erros are thrown). But if I ask DHCP to restart, it will stop, but not restart. And the error is "No subnet declaration for eth1 (192.168.3.2)"

I'm newbie-ish. Help me Obi-Wan Kenobi.

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Networking :: Cannot Ssh Into Server From Work

Jun 1, 2010

There is a server at my house that I store a lot of info on and do most of my work on. Normally, when I get online somewhere I ssh into my server and get to work, but all of the sudden, I can't do it from my work place. I have tried changing the port numbers around, but that didn't help. I also can't ping anything when I'm on my work network anymore, I just get a message saying packet filtered. If I connect to a local coffee shop internet, it works just fine and I have full access.

So my question is this, can I do anything about this? If worst comes to worse, I can tether my internet access though my phone, but it is a lot slower than my works internet connection and it really kills my battery.

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Ubuntu Networking :: Server Blocking SSH From Work Network

Feb 2, 2010

I have an ubuntu 8.04 dedicated server running openssh which I am having problems with.

The server is based in England yet I am currently working from Thailand. Slow speeds and timeouts I am used to but it is now over 24hr since I have managed to SSH the server (from here).

I just tried remote desktop on my PC back in the UK and this connected straight away through both SSH and SCP.

Thinking that it may be the IP being blocked from my works network I switched off wifi on my phone and tried to connect over the data network a few times with no luck.

Another strange problem is that when we got the server it was locked into a chroot jail which SSH(22) always leads into. After accessing SSH on port 22 I have to run a break script to gain root access. The sshd_config file says that the server is listening on port 57 yet I have never been able to access this.

Code:
> netstat -a | grep ssh
tcp6 0 0 [::]:ssh [::]:* LISTEN
> iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

[Code].....

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Ubuntu Networking :: Setting Up Work Loopback Server

Mar 24, 2010

I'm setting up a loopback server for work related testing. I have a small program that needs to be executed through telnet from about 200 IP's on the same network. On the server, I have to set a static ip, enable telnet login, and place my 2 program files in the appropriate folders so it will run. I have been on this for 2-3 days and haven't got far.

My /etc/Network/interfaces file is this...
Auto lo
iface lo inet loopback

The rest of terminal is filled up with these, and it states that the file only has 32 characters. I don't know if this is a privilege issue or not. I've read several threads on telnet, and lots of arguments about ssh, but I can't run ssh, so I need to enable telnet. There is not a security issue. I run a private network where the only valuable resource would probably be the text file with my IP address on it. Its also accessed by people that have very limited networking knowledge and no linux knowledge...

So,
Set static IP
Setup telnet server...
Any takers?

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Ubuntu Networking :: Getting Wireless To Work On Ubunt 9.10 Server?

Mar 25, 2010

at the moment I run the code;

Code:
sudo ifconfig [interface] down
sudo dhclient -r [interface]
sudo ifconfig [interface] up
sudo iwconfig [interface] essid ESSID_IN_QUOTES
sudo iwconfig [interface] mode Managed
sudo dhclient [interface]

and this gets my network going fine Could someone let me know how to set up /etc/network/interfaces to get it running on startup

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Ubuntu Networking :: Use DNS Server For Clients To Work With Any Address

Dec 15, 2010

On my server I've a OpenVPN gateway and a DNS bind9 serveur At the moment, OpenVPN send opendns address to the clients and it works fine. I would like to use my DNS server for my clients to work with any DNS address. Here is OpenVPN config :

[Code].....

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CentOS 5 Networking :: Cannot Get New IP To Work In Server

Nov 3, 2009

I have been a loving fan of your software for years now and have been trying to move into a new dedicated server, getting away from my VPS I have been anchored to. I had to change static ip's on my main internet line and thus got locked out of my server. I have the box here and I can console into it but I cannot get the new ip address to work. I have tried so many things it would waste more time than asking for the correct answer.

I know you are wise in the ways of the server as you have gotten me out of a jam in the past. I am currently running Centos 5.4 and a trial version of WHM/cPanel (which needs to be re-registered to the new address if I can ever get back online.)

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Feb 21, 2010

How to connect my newly installed ubuntu on my desktop at work to the company's server that is windows based. I have my user name and password given to me by my it office but they could not help me set up linux.

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Apr 3, 2010

I've searched through google, and all I can find are instructions on how to set up a L2TP/IPSec VPN that works with macs and iPhones. I'm NOT trying to set up an L2TP/IPSec VPN. I'm trying to set up a pure-ipsec vpn.

The iPhone IPSec client is a built-in cisco client, I believe. I'm staying away from L2TP and PPTP because I need multicast packets to go through. *edit: wow, i just noticed that the title says "8.10 LTS". Oops! I obviously mean "8.04 LTS". Gah, the lack of sleep got to me.

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Ubuntu Networking :: Failed To Retrieve Share List From Server / Get It To Work?

Jul 24, 2010

Trying to share files between Ubuntu 10.04 machines has become a continuing nightmare; it has been going on ever since the launch of 10.04.

I have worked my way through every post and howto I can find in this forum, but without success.

I have 3 machines in my home network; 2 are on wired connections and one on wireless. Each machine dual boots Ubuntu 10.04 and Win XP.

When all machines are in XP, everything is fine. When all machines are in Ubuntu, the reverse is the case. On some I can see the other machines; on others I can only see "Windows network". In all cases, clicking on any of the icons that emerge from Places>Network, I get the "failed to mount....failed to retrieve share list from server."

Along the way, I have changed /etc/samba/smb.conf so often that I have now done a clean reinstall of Ubuntu on each machine and a clean installation of Samba. The problem remains.

I have a few specific questions, the answers to which might just lead me in new directions

1. In the smb.conf file, should the "Netbios name" entry be the name of the machine itself or the name of the Ubuntu machine that you wish to be the server.?

2. Should there be a different entry for WINS support yes/no for server and clients?

3. Many of the howtos take you to /etc/init.d/samba to start and stop samba; but that folder is not present on any of my installations. Is that OK? Do those instructions only apply to earlier versions?
4 I am totally at a loss over the WINS server entry, and what w,x,y,z are meant to be replaced with

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