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

Oct 1, 2010

I installed dhcpd using:


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


The error was:

I changed permissions to 777:


To no avail!

It's got something to do with AppArmor.

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


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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 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 netmask {


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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 ("

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

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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


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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


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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...

/# A slightly different configuration for an internal subnet.
subnet netmask {
option domain-name-servers,;
option domain-name "linuxrouter.local";


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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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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?

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


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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 :: 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

1 0.000000000 DHCP DHCP Discover - Transaction ID 0x200d8ad


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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-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" in my dhcpd.conf my windows-xp-clients dns-server address is set to is strange! All other things seem to work correctly.This is my dhcpd.conf:

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


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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 however instead it gives it the ip address

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...

option domain-name "example.org";
default-lease-time 600;
max-lease-time 7200;


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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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 : and I have created a second interface eth0:1 with this address: 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;
default-lease-time 3600;
max-lease-time 2347200;
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 netmask {
option routers; }
(Which is first in the dhcpd.conf) after the "subnet netmask", 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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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 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 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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Server :: Apache .htaccess - Permission Denied. Exclude From Httpd.conf

Jan 13, 2011

I am administoring a few websites and the latest website to be deployed has a few "unable to check htaccess file, ensure it is readable, referer: " errors in the apache-error log.

That is fine, becuase the directory doesnt contain a .htaccess file.

Is there a setting whereby I can turn off this error ?

I dont want to turn off checking for .htaccess files because some directorys have this file and use it.

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Server :: Reading Cifs Share Fails With Permission Denied

Jun 15, 2011

I'm trying to setup a samba server to share data among clients via cifs. As a test, I mounted the samba share on the same machine and tried to access the contents of the directory. The mount command was:mount -t cifs -o username=sthomaso,workgroup=WORKGROUP //server/scratch /mnt/server/scratch..which worked fine after entering the password. Although I can "cd /mnt/server/scratch", when I try to list the contents of the directory with "ls", I get error "ls: reading directory .: Permission denied".

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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 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 is still given.


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Ubuntu Servers :: Unable To Install Postfix Atal: Open Database /etc/aliases.db: Permission Denied?

Mar 14, 2010

Running newaliasespostalias: fatal: open database /etc/aliases.db: Permission deniedin my /etc I do not have a aliases.db only an aliases.I cp aliases aliases.db but when I try and install post fix again it gives me the same error and aliases.db goes away.

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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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Ubuntu Servers :: Ssh Server - Permission Denied - Please Try Again

Feb 20, 2010

fresh install of ubuntu karmic server. fresh, vanilla install of openssh-server attempt to connect either via standard ssh, linux client or puTTY win32 client system (both on local LAN)

First connect is great. connection established.

Second connection (via multiple clients) screams that: "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" and since I have strict checking, won't let me continue.

So, i do a little


To flush it out (i have backups,).

Then i try again:

I get the typical "Are you sure you want to continue connecting (yes/no)?" and i say yes. at which point, i offer the password for the username in question and it flat out refuses: "Permission denied, please try again."

Ok, so i have even gone as far as do a complete rip and replace of the ssh server and it's config files, however this continues to loop and repeat.

So, question one: Why does my key change?

Question two: Why am i getting "permission denied" errors on subsequent connect.

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Ubuntu :: Server Virtual Site - Permission Denied - Unable To Open Logs

Apr 20, 2010

I was able to get the a2ensite command to enable a virtual site because it says "Site xxxxx.com already enabled" when I run the command. My problem now is that even though a site is enabled it says this: Code: /etc/init.d/apache2 restart * Restarting web server apache2

[Tue Apr 20 01:28:57 2010] [warn] NameVirtualHost *:80 has no VirtualHosts
[Tue Apr 20 01:28:57 2010] [warn] NameVirtualHost *:80 has no VirtualHosts
[Tue Apr 20 01:28:57 2010] [warn] NameVirtualHost *:80 has no VirtualHosts
[Tue Apr 20 01:28:57 2010] [warn] NameVirtualHost *:80 has no VirtualHosts

(13)Permission denied: make_sock: could not bind to address no listening sockets available, shutting down Unable to open logs Should I do a chown or chmod to a file?

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Ubuntu Servers :: Password To Log Into SSH Server - Permission Denied

Jan 23, 2011

I have created a basic ssh server and i haven't done any configuring to it other than to port forward port 22. i am trying to connect to it from a client computer (they are on the same router). i enter the command "SSH <IP of the server>", and it asks me for the password. i have tried "SSH <my user name>@<IP of client>", but it says permission denied.

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Ubuntu Servers :: Proftpd Permission Denied After Upgrade From Server 8.1 To 9.1

May 24, 2010

After upgrading ubuntu server to the latest version (according to apt-get) proftpd stopped working. When I try to execute proftpd I get the following message (when logged in as root or user with root privileges) :


Line 18 in modules.conf looks like this:


I've tried removing and re-installing proftpd, but this doesn't help

If I comment line 18 in modules.conf, I just get permission denied on the next LoadModule command...

Can I remove all modules? or is there a way of fixing the permission denied issue?

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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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General :: Bash: /etc/ld.so.conf: Permission Denied?

Sep 10, 2010

If I run this as su I get the same thing. If I log on as root user It is the same as well

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Fedora :: Error : Permission Denied, Please Try Again. My Nssswitch.conf Is

Aug 2, 2011

I had Fedora 8 installed in few clients and a server (same server for NFS and NIS), and NIS and NFS configured, and was working fine. Yesterday, I upgraded few client computers to Fedora 15 (server is still same), and configured NFS and NIS client. NFS is working fine, I can see home directories.

For NIS: ypwhich, ypcat passwd gives me correct uutput, ypbind is running. The problem is, I can't login to NIS client. The error is: Permission denied, please try again. My nssswitch.conf is


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General :: Change A File In Filestarter Using Sudo /etc/rsyslog.conf - Permission Denied

Aug 4, 2011

I Have been trying to change a file in filestarter using sudo /etc/rsyslog.conf. but am getting a permission denied message. How do I get into this file to change it ? Firestarter is working ok but for some reason it cannot open the system log. I Have found what amendments need to be made to get this to work but simply cannot get access to the file

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