Is it possible to setup dhcp server in such a way that even if a client disconnects for a short period of time (5 - 10 minutes) the dhcp server keeps that address for that specific client and lease it back. Tracking can be done using the mac address of the client.
View 2 RepliesThis dhcp server is configured with redhat enterprise edition. I found that logs are generating in the following path /var/log my doubt is how can i setup the logs generating for a specified day.
View 1 Replies View RelatedI have a small office setup all on public ips and was trying to work out the best way to move the wearhouse computers on to private ips and leave offices on public ips I have server with 2 nics and i have two switches What i am after is how to set it up so all computers can still see each other but private can not access net All the office computers via switch 1 Public IPs All the wearhouse computers via switch 2 Private IPs
1 DHCP server
3 Routers from ISPs going to switch one
Both switches going to DHCP Server
i have a homework where i have to set up a dhcp server on linux. I am using ubuntu. I tried following: [URL] However after running "sudo apt-get install dhcp3-server" the file "/etc/default/dhcp3-server" does not appear.
View 9 Replies View RelatedIve tried on multiple occasions to setup a dhcp server, but all the google searches return legitimate results it seems, and ill set everything up, except the last few instructions i have to configure /etc/dhcp3/dhcpd.conf and /etc/default/dhcp3-server, but ubuntu says its not there.Im running Ubuntu Server 11.04 and using nano to edit files
View 4 Replies View RelatedHow to set up DHCP server in Redhat Linux 6
View 1 Replies View RelatedI decided to forgo my router's DHCP capabilites and try to make a random computer at my home take on the job.
First of all here's my network topology:
I have a cable modem hooked up to eth0 on my linux box, and this is where my internet comes from and works fine.
I also have another ethernet, eth1, which is connected to a wireless router in bridge mode. My end goal is to have my linux box sit between my internal network and the outside world. Thus it will need to act as a DHCP server, a NAT and as a firewall. Right now I'm just focused on the DHCP part.
Here is a copy of my dhcpd.conf file:
My /etc/sysconfig/dhcpd file has:
However the issue is that it is still listening on eth0. and not issuing any leases on my internal network.
What I think is happening is that it's not recognizing the 10.0.1.x subnet because my router is issuing leases on the 169.254.193.x, even though I put it on bridge mode. But I could be totally off mark.
Also running tcpdump on eth1, I can see requests coming in for dhcp, but my server isn't responding to them.
I've tried to configure DRBL server to use Clonezilla and that is required me to setup DHCP, TFTP servers.But I've gotten a lot of errors from them - so please look at my attachments from /var/log/messages and dhcpd.conf - help me to find out what are wrong with them.
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I've set up a very simple net with a dhcp + dns server using dnsmasq. It works but the server itself cant resolv clients names. Clients do resolv without any problem my /etc/dnsmasq.conf
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is it possible to setup a DHCP server using the loopback or a virtual interface? I installed Sun VirtualBox on my fedora system and want to try and kickstart them from within the same box on a virtual network. Is this possible and has anyone done it? I only have a single NIC in the box and it is on my public network.
View 1 Replies View RelatedI my office I have configure dhcp in my centos sever
eth0 for adsl-setup
eth1 for lan 172.16.0.4
I am using squid proxy server for internet access,
in my office all are using laptop through wifi , so i need to configure the browser proxy setting for accessing internet.
is there any way to setup automatically get the proxy setting as dhcp. I have tried transparent proxy but no success.
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.
View 2 Replies View RelatedI am working on setting up a bind 9 nameserver that will be responsible for serving up DNS records for my internal network and publicly for my web server. My configuration is below:
Firewall Gateway (Ubuntu Server 9.10) ---> switch ---> internal servers (ubuntu server 9.10 and mac os x server)
The internal servers are all on the same subnet, so DNS, web and mail will all be on the same subnet of private IPs. Each internal server is mapped with SNAT to a public IP address. And the DNS server only has port 53 forwarded to it.I am trying to figure out the best way to set up my nameserver so that it can provide records for my internal servers based on private IP addresses, and then provide records to the public for my internal servers based on their public IP addresses. I had a few questions on this:
1) Is this the correct way to think about my setup, or is this typically done in another way?
2) Does anyone have recommendations on the specific configuration I should follow?
3) Are there specific references I should look into as well?
I'm trying to setup postgresql84 with uuid support, everywhere says that postgresql84-contrib should do the trick but it does not. I even generated the uuid-postgres and uuid rpms from source for uuid-1.6.1 and no luck with the uuid support.
View 3 Replies View RelatedBack in April I set up a Ubuntu DHCP server and a multiple VLAN network [URL] to migrate our various servers, workstations, etc off the 192.168.1.1 /24 network that everything was on because we where running out of address space. I built out the new network and everything worked great except our AD server would never get an IP address from the DHCP server (static reservation) and even if I set the IP statically on the AD server it couldn't ping the gateway and noone could log in. After several attempts to resolve this, including bringing in outside help, we where never able to figure out what the problem was.
Now 6 months later I have time to revisit the issue without effecting the live network. I used Acronis and imaged the AD server last Friday, cloned it on to another box with the same hardware, and put it up on the new network that's been sitting unused for the last 6 months. Today when I statically set the IP on the AD server (which is what I want) it connects and I can ping it's gateway 192.168.1.1 and all the way across vlans to a test sales agent workstation at 192.168.8.xxx on vlan 800 but only if I statically assign the agents station an IP address. When I try to get an IP address via DHCP it fails as destination unreachable. Nothing has changed in the last 6 months on the DHCP server but now it for some reason can't ping its default gateway 192.168.1.1. All of the config files are the same as they where left from the post linked above aside from the vlan id's used where changed from 1's to 100's (i.e. vlan 3 is now vlan 300) /etc/network/interfaces
Code:
auto lo
iface lo inet loopback
auto vlan100
iface vlan100 inet static
[code]....
why it can't reach the gateway, when I do a tcpdump I can see the DHCP requests come in on eth0 but the server never responds and I'm pretty sure its because it isn't "seeing" them since it thinks there isn't a network connection but I don't know how to trouble shoot to find out where the problem lies.
Back in April I set up a Ubuntu DHCP server and a multiple VLAN network [URL] to migrate our various servers, workstations, etc off the 192.168.1.1 /24 network that everything was on because we where running out of address space. I built out the new network and everything worked great except our AD server would never get an IP address from the DHCP server (static reservation) and even if I set the IP statically on the AD server it couldn't ping the gateway and noone could log in. After several attempts to resolve this, including bringing in outside help, we where never able to figure out what the problem was.
Now 6 months later I have time to revisit the issue without effecting the live network. I used Acronis and imaged the AD server last Friday, cloned it on to another box with the same hardware, and put it up on the new network that's been sitting unused for the last 6 months. Today when I statically set the IP on the AD server (which is what I want) it connects and I can ping it's gateway 192.168.1.1 and all the way across vlans to a test sales agent workstation at 192.168.8.xxx on vlan 800 but only if I statically assign the agents station an IP address.
When I try to get an IP address via DHCP it fails as destination unreachable. Nothing has changed in the last 6 months on the DHCP server but now it for some reason can't ping its default gateway 192.168.1.1. All of the config files are the same as they where left from the post linked above aside from the vlan id's used where changed from 1's to 100's (i.e. vlan 3 is now vlan 300) /etc/network/interfaces
Code:
auto lo
iface lo inet loopback
auto vlan100
[code]....
why it can't reach the gateway, when I do a tcpdump I can see the DHCP requests come in on eth0 but the server never responds and I'm pretty sure its because it isn't "seeing" them since it thinks there isn't a network connection but I don't know how to trouble shoot to find out where the problem lies.
I am puzzled with trying to configure a linux (openSUSE) client to dhcp to eBox DHCP server. I am using dhclient to lease an IP address with dhclient eth0 -s 10.45.48.108 and get a response
openSUSE11232CL1 dhclient: DHCPDISCOVER on eth0 to 10.45.48.108 port 67 interval 4
openSUSE11232CL1 dhclient: DHCPOFFER from 10.45.48.108
openSUSE11232CL1 dhclient: DHCPREQUEST on eth0 to 10.45.48.108 port 67
openSUSE11232CL1 dhclient: send_packet: Network is unreachable
openSUSE11232CL1 dhclient: send_packet: please consult README file regarding broadcast address.
The server reports eBox141 dhcpd: DHCPDISCOVER from 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
eBox141 dhcpd: DHCPOFFER on 10.45.200.2 to 00:0c:29:3e:57:a3 (openSUSE11232CL1.domain.net) via eth0
I interpret this as the server receives the request and the client accepting it but the lease does not last long and the connection breaks. what this could be and why the connection breaks? Or my undestanding is totally wrong on how it works and should work? And BTW, where is that README file that's referenced in the message I receive on the client?
Currently I have my eth0 interface getting a DHCP address but at times the DHCP server will not be reachable. Sooo what I would like my server to do is if it cannot find a DHCP server assign a static address to eth0. Then start the DHCP service so it can then dish out some addresses.How can I do this? Surely it is possible
View 2 Replies View RelatedI have an embedded device for which I've created an html configuration page. This page allows you to set static IPs, dhcp, and can scan for wireless devices.My problem is that in order to access the device it requires that it runs as a dhcp server otherwise people are not assigned an IP and so can not access the embedded devices static IP. (This config page is for the laymen and so they are not the type who are able to set up their own static IPs). One of the potential options is to have the device connect to the network on eth0 acting as a dhcp client. However this prevents me from running a dhcp server.One solution I can think of is running a dhcp server only if it doesn't detect another dhcp server running on the network.
View 4 Replies View Relatedusing the LDAP as storage of hostnames/IPs/MACs for the DHCP server on CentOS.Also once the IP is allocated via DHCP to the hosts,it would be useful to insert such host into the DNS. (BIND? dnsmasq?)I've found this link [URL] which deals with a patch for the ISC DHCP package, but I don't think this is actually up-to-date.
View 1 Replies View RelatedFollowing situation:
I'm trying to make a network-installation of my rootserver with CentOS 5.4 x86_64.
This server is hosted by 1and1 a company of the united internet group, which is a big player in europe.
The network environment of 1and1 is providing classless static routes via dhcp by using the dhcp option 121.
If i'm right anaconda does not support this dhcp option 121 and therefore does not "ask" for the routes.
Without the routes configured the traffic does not get through and the network installation fails.
An installation from fedora12 (anaconda 12.46) works without any problems.
Is there someone in the dev team that can patch or backport it?
I need a linux distro who provides the following:1) Has an partitioner who can resize fat , ntfs ,ext* , .....filesystems.2) Has an excellent hardware support3) The installer can install console or graphic mode 4) The updating can be done via console5) In console can be configured internet via: static IP , DHCP , PPPOE and preferably to have support for USB modems.
View 8 Replies View RelatedIs dnsmasq important for dhcp to setup dns?
View 3 Replies View Relatedusing Debian 5.0, GNOME desktop.my DSL service was to be connected today.the problem is my DSL light keeps blinking.ethernet light is solid.how do i setup my DHCP on my computer
View 12 Replies View RelatedI'm trying to find out when QME2572 (Qlogic) card became support by the kernel. We have a RHEL 5.1 system that is moving to new hardware, however the kernel at this release doesn't support the new hardware, due to the Qlogic card change. I tired the Redhat KB and Bugzilla. Is there a Kernel change list etc I can search. Never really played around with the kernel too much so I'm just after some pointers for looking up this information. Offically its not supported until Redhat 5.3, I'm trying trying to research kernel info so I can tell the customer they have to upgrade.
View 3 Replies View RelatedI am having several boxex with centos on it. No pb. I have recently setup a new box with centos 5.4 and I am not able to get the network working on it when configuring a static ip.I've configured eth0 and dns using "setup": unsuccessfulI've used the network config GUI: unsuccessfulAnd it is working very well when I let the dhcp getting the setting.I need a static IP.Here is the getinfo output when static ip setup, and below it, the getinfo for dhcp setting
== BEGIN uname -rmi ==
2.6.18-194.3.1.el5 i686 i386
== END uname -rmi ==
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I just got DHCP working, but I need to add a "Pre-Defined Option" for the Cisco VoIP network here. At least that's what it's called in Windows. This "Pre-defined Option 150" is necessary on Windows dhcp servers tied to Cisco VoIP networks, but I have no idea where to start getting that set up in Fedora.
View 3 Replies View RelatedI have a similar problem. My ubuntu box is set up as a dhcp router for my Xbox360, my xbox can get ip and DNS information from the computer, but it doesn't seem to get the right info. The ip address it gets assigned is out of the range I've set in etc/dhcp3/dhcpd.conf.
View 1 Replies View RelatedI'm still fairly new to Linux so please forgive me if my description of my problem leaves out important information. My problem is centered around using a AT91SAM9G45 development board (DB)on Fedora 10. I have directions on how to setup on my host machine a DHCP server to connect to the development board. I have installed an additional network card (eth1) that will be used exclusively to communicate with my DB.
The DB has been setup with an ethaddr=12:34:56:78:9a:bc and an ipaddr=192.168.251.191.
The following is info from ifconfig for eth1:
eth1 Link encap:Ethernet HWaddr 00:0A:5E:1A:46:1C
inet addr:192.168.251.190 Bcast:192.168.251.255 Mask:255.255.255.0
inet6 addr: fe80::20a:5eff:fe1a:461c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:38 errors:0 dropped:0 overruns:0 frame:0
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my server is sun x4450.Memory is 64G RAMinstall CentOS 5.3 64bit.free -m only dispaly 32G RAM,but BIOS can display 64G RAM.how to setup support 64G RAM?
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