The dhcp-server tag has no wiki summary.
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1answer
30 views
Access Control Lists & DHCP
Please take a look at this image right here.
In the image above you can see a virtual netwerk simulation program (CISCO Packet Tracer 6.0) where I'm trying to setup a network and secure it.
However ...
4
votes
1answer
31 views
DHCP scope for a user class option
In Linux how can I set a DHCP server configuration which will lease IP addresses from scopes which are defined according to user classes. For example the following configuration leases IP addresses ...
0
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0answers
25 views
Windows DHCP server not sending all options
I'm facing a strange problem with Windows Server 2003 and its DHCP server. Here is my scope and its related options.
However when I look at the traffic using Wireshark, here is what the server is ...
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1answer
45 views
DHCP server as Linux and client as Windows
I have ubuntu installed machine and setup a DHCP server on it. Now I want to use this DHCP server as all for my windows clients. I tried a lot but failed. Right now Windows client machine uses ...
0
votes
1answer
43 views
Forwarding all HTTP/HTTPS traffic to a port with iptables
I'm trying to setup a wireless network that routes all traffic to a local webserver (basically a hotel wifi login page).
Here's my dhcpd config:
$ cat /etc/dhcpd.conf
ddns-update-style none;
...
2
votes
2answers
83 views
windows server 2008 DHCP ran out of IP addresses
I have a Windows 2008 server with 1 DHCP Scope 10.0.0.X/255.255.255.0 and watchguard firebox for my internet router.
I have run out of IP addresses. I added a second scope to my DHCP server, and I ...
2
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4answers
283 views
Is a short DHCP lease from my ISP likely to cause problems?
I'm wondering if having a short DHCP lease is likely to cause any issues, such as:
Dropped VoIP calls
Dropped VPN connections
If so, could you explain why?
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0answers
46 views
DHCP Post-Install configuration wizard hangs
I'm attempting to set up a Windows 2012 Active Directory demo environment on a Hyper-V VM, but when I run the DHCP Post-Install configuration wizard to authorize the DHCP server in AD DS, the wizard ...
0
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1answer
313 views
Setting up routing in CentOS 6.4 as a router/DHCP server with two nics
I am stumped about how to setup centOS 6.4 to route packets.
|Local Network| -eth0- |CentOS 6.4 box| -eth1- |Internet|
The centOS box has a dhcp server running. Currently it is handing out IP ...
0
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1answer
74 views
VSphere 5.1 DHCP Server VM routing
I am trying to setup the routing for a VM that is my firewall/dhcp server.
I have 3 VMs:
router/firewall (centOS) -> VM1
unRAID(unraid) -> VM2
download-server(ubuntu server) -> VM3
2 NICs
vmnic0 ...
2
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0answers
103 views
DHCPREQUEST and DHCPACK spam in logs
I've recently noticed that my android phone (droid dna, although the thunderbolt that I had before did the same exact thing) is rapidly requesting dhcp info my dhcp server (isc-dhcp-server on debian ...
0
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1answer
59 views
deny unknown-clients dhcpd.conf
I'm having troubles figuring out how to set up my dhcpd.conf. I am rather new to this.
I want to allow booting and only allow the clients listed below to get their fixed address.
I do not know how to ...
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1answer
96 views
DHCP messages in LAN [closed]
I run a Mac and release/renew my IP with:
sudo ipconfig set en0 DHCP
In wireshark I get the following with udp.port==67 as filter:
Why are the messages sent from my computer broadcasted, but ...
1
vote
1answer
48 views
How to override the network DHCP Server settings to be specific to my own .conf file?
Basically, I have want to test out WPAD(Web Proxy Autodiscovery Protocol ) , PAC. But I would like to do it without touching the Network DHCP server. So, can you suggest a way in which I can achieve ...
1
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0answers
54 views
DHCP Requests out of line with lease time, inordinate amount of requests to server
Environment contains an OS X 10.6.8 Server with OS X 10.8.2 clients. DHCP is running on server with a lease time of 1 Day (86400 seconds). The system log is flooded with DHCP REQUEST/ACH messages ...
0
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1answer
148 views
Cannot find the DHCP Server
The network was fine yesterday and as far as I know nothing has been changed or added. This morning some computers are connected to our domain but most of them are reporting limited connectivity. On ...
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1answer
364 views
Windows Server 2012 AD DC/DNS/DHCP in single server
I have to say I am not a system admin but I had to setup the development environment in my company and I ran into many issues and after searching for many hours I hope somebody can help me out here!
...
2
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1answer
37 views
Changing DHCPv6 server
I have a DHCPv6 daemon that is answering for requests of some machines and everything is working fine. So I decided to remove this DHCPv6 daemon e start another daemon on another server, but the ...
0
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2answers
96 views
Set up DNS and DHCP roles on Win 2008 server. Why don't clients show up in Explorer?
I disabled the DNS/DHCP on my router and activated those services on a Windows 2008 server. Everything is working fine, but when I go to browse the network none of the machines can see any other ...
0
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0answers
57 views
wifi connection can provide internet connection simultaneously to more than 300 users [closed]
We have a very large auditorium where more than 500 students want to take an online test.
How many access points minimum are needed to sustain wifi connection simultaneously to more than 300 users ...
1
vote
1answer
75 views
Can I run 2 dhcp servers when I use predefined host entries?
I have a very specific setup of servers which netboot off a san. All of them provide identical functionality. There are no other machines in this netblock.
Each machine boots from an iscsi image ...
0
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2answers
66 views
Assign IP range per switch?
Is it possible to handout IP ranges per switch with the use of one DHCP server?
Example, i have 2 Swicthes (A & B). I like to:
switch a => 192.168.1.50 - 192.168.1.75
switch b => ...
0
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0answers
46 views
How to sort dhcpd.conf by IP address
I mantain a list of mac-ip addresses in my dhcpd.conf file like this:
# host1 - description
host host1 {
hardware ethernet 70:71:BC:1D:A9:66;
fixed-address 192.168.0.43;
}
# host2 - descritpion
host ...
0
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0answers
38 views
Prepend localhost as nameserver then restart DHCP on a virtual host
I'm following this tutorial: http://groups.drupal.org/node/16862 to setup subdomain on my virtual machine. In step IV, I prepended 127.0.0.1 to nameserver as described by the tutorial and sudo ...
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2answers
74 views
configuring a DHCP server with an 8 port switch (plus port forwarding?) [closed]
My setup is a modem running in bridge mode into to an 8 port switch. I have a router but am interested in trying out a computer as a DHCP server instead. Does the computer acting as a DHCP server have ...
2
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2answers
64 views
Why is a computer on my network not resolving correctly?
I am running Windows 2003 Server with Active Directory and DHCP enabled.
the machine: laptop1 receives the IP: 10.2.6.134 from the Windows 2003 DHCP Server.
the machine name and IP does not show up ...
-2
votes
3answers
114 views
No route to host after changing interface to static ip [closed]
I installed a Linux (Ubuntu) server inside my home LAN, initially it's automatically configured to use DHCP interface. I'm connecting to this server from another computer using that server's hostname. ...
1
vote
1answer
240 views
Vyatta: how do I view up fixed DHCP leases settings?
I'd like to know how could I get the MAC-IP DHCP associations.
I know that there is show dhcp leases but it only shows information about the active leases.
0
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1answer
311 views
Running a dhcp server on windows 7 ultimate
I'm trying to get my HP T5740 thin clients to connect to my local network without much success. I asked a question here but haven't got any response. I think that question should have been posted on ...
4
votes
1answer
333 views
Can not authorize DHCP server
I have run into a strange DHCP problem. The thing is the service is running, but the DHCP is not authorized. However, when I try to do it by right clicking, the option to authorize is not there - I ...
1
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1answer
143 views
When does ISC dhcpd expire leases
When exactly does ISC dhcpd forget a lease that is not explicitly freed by the client?
Context: I am running an installation with many small pools (3 address) and it does not seem to cope well when ...
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0answers
78 views
How to make ISC dhcpd not log a specific hardware ethernet address (mac)
I have isc dhcpd v3 serving a local subnet.
I have installed a rogue dhcp server detector (dhcp_probe) which constantly sends dhcp requests. These requests are logged by the legit dhcp server, filling ...
5
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1answer
587 views
Client not getting address from some DHCP server
I'm working on some embedded devices which should be connected to a large network (hundreds of devices) via ethernet and that should be configured using the DHCP protocol. What I'm experiencing is ...
0
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1answer
254 views
How could I fix “No subnet declaration for restart (0.0.0.0)”?
I have a DHCP service installed on my distribution, Backtrack 5 R2 (ubuntu 10.04) and it was working fine, but when I began to configure DNS it suddenly stoped working, how can I make it work again??
...
0
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1answer
77 views
Setting up a small DHCP server for small network on windows server 2003
I am trying to set up a DHCP server on a Windows 2003 machine for a small network. I have used this guide[http://www.windowsnetworking.com/articles_tutorials/dhcp_server_windows_2003.html] to setup ...
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0answers
61 views
ISC DHCP: Rule to catch hosts which don't match any existing rule?
I have an existing dhcpd server which uses ISC's DHCP combined with an xCAT server. Close to 100 hosts already have definitions similar the following:
host foobar {
dynamic;
hardware ethernet ...
3
votes
2answers
473 views
Secondary DHCP server won't start on Centos 6.2
I'm trying to create a backup DHCP server. Server times are in sync. Primary server starts fine. Secondary server won't start. Error from /var/log/messages is:
Sep 15 14:47:45 stream dhcpd: ...
1
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2answers
275 views
dhcpd pool exhaustion - What's the result?
I have a DHCP server that serves leases to several houndred, maybe up to a thousand, different clients on an average day. The pool consists of 242 IPs, and due to the highly dynamic nature of the ...
0
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0answers
80 views
Re-mapping a new IP address to existing mac address in dhcpd.conf not able to provide new IP address to client machine
I did a re-mapping of a MAC address to a different IP address in the dhcpd.conf file and restart the dhcpd service.
Say initially it was like,
host host1 { hardware ethernet 00:56:9D:5E:45:6D; ...
1
vote
1answer
74 views
Is using wildcards for hostnames in dhcp module of dnsmasq possible?
I want to have all machines with a hostname that starts with foobar- assigned an IP from a specific range with an infinite lease. All other machines should have a volatile IP. I did the following but ...
2
votes
1answer
191 views
Multiple DHCP relay servers after one another?
Is it possible to have multiple dhcp relay servers in line?
IOW DHCP client <=> DHCP Relay A <=> DHCP Relay B <=> DHCP server
0
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0answers
34 views
How can I have DHCPD read a list of MACs from a file in order to provide different options?
Not sure if there is a better way to ask but basically I am trying to take a file with a list of MACs and provide different dhcp options to those clients.
0
votes
1answer
453 views
Is there a free linux distribution that provides network services with an Web interface? [closed]
What I have in mind and used is a commercial gateway/firewall with an web-interface for configuration that has this specifications:
Administration
Network
Monitoring and logging
Authentication
...
0
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0answers
78 views
addding “CID” and leased address to dhcpd logging
I am running dhcpd version V3.0.5-RedHat on a CentOS based server. This server serves LT2P users terminating on an LNS, and the LNS relays the DHCP requests here. All seems to be working O.K, however ...
3
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3answers
4k views
Force the DHCP server to renew the IP address of a client machine, without doing anything in client machine
I would like to know, if there is a way I could force the DHCP server to renew the IP address of a client machine instantly, without me going to the client machine? In fact, imagine, I don't have ...
2
votes
1answer
81 views
Computers using ::1 for DNS server on DHCP ipv6
When ever i look at ipconfig /all i see that my computers are getting ::1 for the first DNS server from my dhcp server. I have removed this entry from the list of DNS server in the options, but the ...
0
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1answer
566 views
Ubuntu Server 12.04 ISC-DHCP-Server not working using standard configuration
I have been trying to configure the isc-dhcp-server package to assign ip addresses to devices connected to my eth1 adapter.
Current Configuration
interfaces:
auto lo
iface lo inet loopback
auto ...
1
vote
1answer
75 views
Windows Server 2008 DHCPv6 Role only providing IPv6 address to Windows DHCPv6 clients?
Testing a Windows Server 2008 Enterprise SP2 server with a DHCPv6 server role configured.
The Scope for the IPv6 range is 2001:db8:0:1::, there is only one exclusion and that is 2001:db8:0:1::1 and ...
0
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2answers
1k views
Ubuntu Server 12.04 Unable to locate package dhcp3-server
I have done a fresh install of Ubuntu Server version 12.04 and am trying to install a dhcp server package using the following command:
sudo apt-get install dhcp3-server
However I get this:
Reading ...
1
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2answers
179 views
dhcpd multiple domain-name-servers
I know it's possible to assign at least two DNS servers via DHCP. For example:
option domain-name-servers 8.8.8.8, 4.2.2.2;
But I wanted to know if I could also add a third DNS or if this would ...
