General :: Windows Clients Not Using NTP Server Provided Via DHCP?
May 31, 2010
I have a network consisting mostly of Windows Vista and 7 clients and an Ubuntu server. The server provides both the DHCP and NTP services through dhcp3-server and openntpd. In my dhcpd.conf, the subnet is declared as follows:
The clients don't seem to be using the NTP server though. When I capture the network traffic with Wireshark during the DHCP process, I also see no mention of the NTP option in the DHCP offer message. I am not quite sure if the clients would have to specifically request that option to receive it or if I have to make another configuration to offer the option.
If I use static TCP configuration, (my Linux is Red Hat, but SuSE is quite similar) I define DNS's in file "/etc/resolv.conf" and Default GateWay in file
So, when I want to display those values, I just display the contents of the file. But, if my TCP configuration uses DHCP server ... I dont know the command to display those values. PD.- in straight : I need a command to display the DNS's in effect on a TCP/IP configuration that uses a DHCP server. Also, a command to display Default Gateway would be welcome.
I have setup a dhcp server on eth0, & i have static Internet connection on eth1. now clients are getting ip automatically, they are able to trace root upto eth0 & eth1. but i am not able to access Internet from client machines. i am using open suse11 as a server. i am not able to do telnet & ftp also from client. i am able to access Internet from server. so please help me to configure my server so that i can access Internet from client machines also.
I'm new to Centos 5 (and Linux) and, after installing Centos, I configured Samba, Apche, ... w/o problems (through interactive interface). My problem is tha t I need to use DHCP (all our clients use dynamic IP addresses for the ease) but I don't find dhcpd ... nor the sample config file(s).
Note : the new server I intend to use is actually connected on a LAN with an 'old' DHCP server (still under W2K server), is this the reason why I can't find/activate dhcp on my new machine ???
I'm attempting to run a DHCP server on my home network to enable PXE booting for ethernet clients, but I'm having quite a few issues getting it all up and running. I'm not entirely sure what is wrong, but I keep encountering errors in syslog as follows:
Code:
Feb 27 02:26:46 servnerr-1 dhcpd: Wrote 0 leases to leases file. Feb 27 02:26:46 servnerr-1 dhcpd: Feb 27 02:26:46 servnerr-1 dhcpd: No subnet declaration for eth0 (192.168.1.3).
[code]....
Networking is not exactly my strong suit, but I would like to get this up and running if at all possible.
I have openvpn tunnel setup between two CentOS servers. One of the CentOS servers also acts as a DHCP server for some client computers.
Server A= OpenVPN server Server B= OpenVPN client (connects to Server A with OpenVPN)
The two CentOS servers can ping each other (172.16.0.0/24) via the tun0.
However, client computer connected to Server B (DHCP server) can't reach 172.16.0.1 (which is the OpenVPN server).
I think I am missing some routing in my "ip route show". Following is the full picture:
What command can I issue to get this fixed? something along ip route add?
There is no firewall service on both end. service iptables stop! I can't bridge eth1 and tun0 as DHCP server might mess up the other side. I can't do a push of "redirect-gateway def1" because then clients loose their IP as they send DHCP requests to Server A.
The Skype audio test claims I have configured Skype correctly. But my new Creative Live!Cam Socialize (Which includes a mic) needs some drivers as only those for MS Windows are provided. Creative spec requires a Linux kernal 2.6 or later which I think I have.
when i assign ip manually to a machine it gets ping by server and it also itself pings server but when i chose to use client machine as dhcp , so that it can directly get assigned ip from server, it does not get ip, instead random ip is provided which is out of range specified at server side in /etc/dhcpd.conf file.
I work for a church, with office staff of about 10 people.
We want to set-up a server to store all the office information, (which is now scattered all over the place).
The idea is to give individuals a partition on the server(password protected). There is database software that needs to be accessed by 5 people( it runs on MS Access). Most of the document are MS Word. Of course you can tell me of a better way to do this than my idea.
how to set-up this network. I have to submit my info to church leadership. it will save us buy Window Server and 10 CAL (that ZAR 10k).
in my office we are using redhat server and 20 windows client machine. some times while viewing the server stored files or not able to view.yesterday i saw a problem all the files are showing but not able to open a single fine after restarting the computer iam able to open the file.
I have setup openldap and samba for authenticating Windows and Linux clients on my server. They are working fine. Windows users are getting authenticated through server as Primary Domain Controller and Linux clients directly from Openldap directory. But I have little problem that is I want to mount home folders created on server to be available on clients so clients get a centralized storage with some quota on both Linux and Windows clients. Can you help me please how can I do that.
I would like to install Linux based AntiVirus Server with Windows Clients. As per the existing setup, all Windows machines are using "demo" or "evaluation" copy of antivirus & all antivirus softwares are not same on all windows computers.
Someone is using Trend-Micro ,other is using Avast. Due to above listed problem,i want to implement Linux Based Free AntiVirus Server,which will be connected directly on the internet. The Linux AntiVirus server will updated it's database from Internet automatically.
Inside the Linux Server,all Windows PC's are connected in a same Local Area Connection. All windows XP computers will fetch the updated data from the Anti Virus Server. Also,i am searching MAIL RESPONDER OR POP UP Windows,when any virus found on any client machine. My company needs Cost Effective solution & Linux is the best solution for this.
I want to replace Windows AD with SAMBA I want to know what policies restrictions I can get in SAMBA as compared to windows AD - whether it is possible to restrict clients not to change IP, access cdrom or control panel.
I must be very thick as i cannot seem to get my dhcp clients to connect to the Internet properly. on my lucid server i installed dhcp3 server and bind9, i can ping and dig all on the local network. on the clients however, as soon as i go out of the local network there's messages like "unknown host www.google.com" or "network is unreachable".
I don't really have a reason for this currently. I recognize all the MAC address on my DHCP client list and keep it rather well locked down. I was just wondering if there was something I could run on the terminal to get more information on a given MAC address on my network. Something kind of like whois for websites.
I have a windows and a linux box running DHCP respectively. The problem is whenever my client system boots up, it fetches the dynamic IP from the windows box. What should I do in order for my Linux box to provide dynamic IP's to clients? Both servers are in a single network. connected via switch.
when I change the hostname on my Ubuntu server, the DHCP clients table in my router is dropped.I'm running 32-bit Ubuntu Server 10.10. My router is a Linksys WRT54GL with firmware version 4.30.15. I'm changing the hostname by modifying /etc/hosts and /etc/hostname. I've also tried changing the hostname using the Linux hostname command in a terminal, but this does not seem to behave correctly according to the manpages (it does not actually change the hostname, or update either of the aforementioned files).
I've also tried using a different router - a Linksys BEFSR41 - but the DHCP table is still dropped when I change the hostname on my server (although this router is not all that different from my other one).
I'm trying to give some windows users a permanent connection to a samba share behind a firewall over the public Internet. I know I can give them access with something like winscp (which they have done) but really I'd like to do it with a VPN so it seems seamless to the user. However I have no idea how to set up the server to support this and am finding the documentation a bit confusing. The samba share is on a Debian box and the firwewall is a Linksys WRT54GL.
I've been using PUTTY to connect to several Linux-based development boxes via SSH on Windows. However, I'm often in a situation where I need several such windows open at a time. I'd like to be able to put these into a tabbed window, similar to how a web browser works. When I'm on a Linux box I just open gnome-terminal with several tabs and start several ssh sessions in different tabs there; but on Windows something like that is obviously not an option.
We've been running samba on linux for a while and everything was fine. All of a sudden when you add new clients to the domain you get the error message :Logon Failure:unknown user name or bad password. This to me seems like a windows error message and not a samba error. When you remove an existing machine (ie on domain) and then try to rejoin it to the domain you fail.
I have an ubuntu 11,04 samba domain server, I want to also configure this machine to work as a dhcp server, however this have give me some issues with te windows 7 workstations, my guest is that it have something to do with the iptables because those station do join the samba domain went both server and workstation are conected to a router.
This is the script I use at boot
Code:
#FOR SHARED INTERNET /sbin/iptables -P FORWARD ACCEPT /sbin/iptables --table nat -A POSTROUTING -o eth2 -j MASQUERADE
[code]....
I haven't test it with windows xp station but I have use the same code in the past with no problems, and since this is my first time joining windows 7 station i belive there must be some other port that need fowarding.
Does anyone have a link to a tutorial on how to set up a DHCP server and SAMBA as a windows domain controller? I can't really find good detailed guides by searching google.
i need to configure Redhat Linux as Domain Controller in my organisation, whee all of my clients PC's will be Windows XP or Windows 7 ( where i can login through Domain users ). what exactly i need to configure in Redhat Linux, i heard Configuring Samba as PDC is quite enough ? is that right ? then what is Open LDAP ? should i need to Configure Open LDAP also ?
