Dynamic Host Configuration Protocol; allows computers on the same network to automatically obtain unique IP addresses and other network configuration parameters.

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DD-WRT sends itself as the DNS server to DHC clients

I'm using DD-WRT on my router (version DD-WRT v24-sp2 (12/11/14) mega). WAN is configured to have static IP and LAN is configured to have a DHCP server provide addresses/DNS, etc to clients. All of ...
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1answer
29 views

Change DHCP IP Pool Starting Address

How can I change DHCP IP Pool Starting Address from 192.168.1.xxx to 192.168.10.xxx?
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1answer
62 views

Two routers, same network, different SSID and password

I have a question about router configuration that I haven't really found an answer to. What I have: SSID: House A: A ZyXEL DSL-modem (660 Prestige) with built-in WLAN and DHCP-Server. IP: ...
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4answers
8k views

Creating WiFi Access point on a single interface in Linux

I am trying to create a WiFi hotspot or an access point on my Linux laptop. I am using Opensuse Kde 12.3. I found out a software called hostapd which lets you create hotspot but it requires two ...
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3answers
272 views

How to find the IP address of a router

I live in a dorm where many students have setup small wireless networks. There are two of this networks that are very close to my room as the signal is very strong. Our college uses DHCP to assign IP ...
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4answers
3k views

How to skip pushing the default gateway via DHCP in OpenWRT?

I have a router with OpenWRT that I want to resolve IP addressing with DHCP without setting a default gateway. I have added a DHCP-Option parameter with value 3,0.0.0.0 that is supposed to set the ...
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1answer
18 views

Tomato firmware with separate DCHP server

I've got a Tomato router which works wonderfully, but I've also got a Windows server that I would like to use as the DHCP server instead of the Tomato router. I know that I can configure each client ...
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0answers
17 views

Java permissions & CLSID for an Agilent 34980A multiplexer unit

I am using a 34980A unit as a multiplexer, that requires Java to view the multiplexer switches through an Internet browser. To operate the instrument I have to be offline and use DHCP, to enable the ...
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2answers
44 views

Specific ip settings for different wifi access points

I have a situation where I want to connect a tablet to two different networks, not simultaneously but switching from one to the other (and at different locations). The tablet is running on Windows ...
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2answers
587 views

Unidentified network on windows 8 pc when hard wired to Airport extreme

I have a weird problem which not been able to resolve as of yet. Okay so let me explain, I have recently had fibre optic installed, and I decided to use a new Airport Extreme (instead of the router ...
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0answers
21 views

Netgear WNCE4004 Wifi Adapter Connection Trouble - Static IP Issue?

Here's my situation: I'm in the military and live in an accommodation block where internet is provided by an unprotected wifi network (I'll call this 'service wifi'). To get internet access, I login ...
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0answers
12 views

ddclient updating to public IP instead of private IP

This is the antithesis to question 389125 I have private services (apache, ssh, synergys for example) accessible on a desktop on the local network. This is not with centralised login (ldap/AD for ...
2
votes
1answer
33 views

How can the DHCP routers option work if it's my own IP address?

I'm setting up a T-Mobile USB 4G data modem on Ubuntu 14.04 and I'm not making sense of the DHCP lease that T-Mobile gives me. Specifically, the value of the "option routers" is identical to the ...
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2answers
4k views

Disconnect other users from DHCP client list

When I log in to my modem webpage I can see lot of employees are connected to WiFi network. This is okay. I have full access to the system and i want to disconnect the particular employee from the ...
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2answers
3k views

How can I fix this conflict between my wired and wireless network connections?

I have two working network connections: One connection is for a wired ethernet card adapter and the other is for a wireless usb adapter. Both connections work fine when used separately, but when ...
0
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1answer
47 views

How does client know which wifi router to use?

I have two questions regarding my home network. It is currently set up as follows: Cable broadband -> NetGear CG3000v2 Modem (ssid:WIFI0) -> eth -> TP-Link WDR3600 (ssid:WIFI1) -> Netgear Router2 ...
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1answer
697 views

CentOS DHCP server failover won't give out leases

I have followed this tutorial: http://www.madboa.com/geek/dhcp-failover/ However, I can not seem to get a lease at my windows client. I have set both servers (CentOS 6.2) in virtual machines, ...
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2answers
314 views

How does DHCP distribute or choose which IP to give within the scope?

There is something strange happening with my OpenWrt firmware. The scope for my DHCP is 100 to 250 in the 192.168.1.* range but the first IP it gave is 192.168.1.189. Is there any reason it started ...
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0answers
34 views

DD-WRT to push alternate Name Servers to clients over DHCP

In order for WiFi DHCP clients to use directly 8.8.8.8 and 8.8.4.4 as name servers, DD-WRT has been configured as follow add dhcp-option=6,8.8.8.8,8.8.4.4 in /etc/dnsmasq.conf (reboot) since that ...
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2answers
5k views

Will disabling NAT on my wireless router cause a performance hit on my DSL router?

I have a Thomson TG508v2 router/modem and a brand new AirPort Extreme connected to it. At first, I set the AirPort Extreme to "share a public IP", which enables DHCP/NAT. Everything works great but I ...
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1answer
33 views

Network Config (Alcatel GPON (I-241W-S) & TPLink TL WR1043ND)

I have a fibre to home internet solution configured at my place, the Alcatel GPON receives the fibre cable and a LAN cable is fed from it to the TP Link router where the ppoe connection is etablished ...
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0answers
30 views

Use ADSL modem as router only, with ethernet input

Now here is the situation, I got a Fibernet internet connection. The modem is available outside the house and I only get an ethernet cable as an input I have a D-Link DSL 2750U modem + router. It has ...
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1answer
2k views

How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

This "router" is not a typical situation. I'm using my phone as a hotspot and can only configure a select number of DHCP options. I can manage the limit on how many devices/clients can use my phone ...
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0answers
29 views

How to set up Networking and DHCP in windows server 2012 inside VirtualBox?

Background: Three operating systems are installed inside VirtualBox: Windows Server 2012 R2 Windows 8 Pro Windows 8 Enterprise So, I want to set up the Server 2012 R2 as Domain Controller, DHCP, ...
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0answers
14 views

dhcpd3 not reusing IP for mac

I have an ip range with two ip-addresses defined as follows in my dhcpd.conf: subnet 192.168.1.0 netmask 255.255.255.128 { range 192.168.1.10 192.168.1.11; default-lease-time 600; ...
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1answer
7k views

PC does not get ip address from router using wired connection

I have an ASUS WL-520GU wireless router with four LAN ports. When my laptop is running Windows 7, and I make a wired connection from the laptop to the router, the laptop does not get an IP address. ...
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votes
3answers
3k views

No internet connection when connected via wi-fi, but fine via ethernet (DD-WRT)

I just bought a new router and installed DD-WRT on it. When I connect to the router via wi-fi, I cannot get an outside internet connection (and in fact, can not connect to the router admin interface ...
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votes
2answers
9k views

Can't get IP on Windows 7 after extensive troubleshooting

My Windows 7 system is not able to pull an IP from my router's DHCP. This just started a few days ago, and I've done quite a bit of troubleshooting. Here's what I've tried in roughly chronological ...
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1answer
5k views

What causes my desktop computer to lose its internet connection on a wired LAN?

Please help! I am at my wits end. I am by no means a techy, but I feel I am intelligent enough to read these forums and follow directions, but I digress... My issue, I have a very simple home network ...
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2answers
1k views

Using dnsmasq with NetworkManager

It was well known that NetworkManager does not play well with dnsmasq (ref: here). I've skimmed throught the lengthy discussion here but still not sure what the recommended way to deal with the ...
0
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1answer
37 views

How can I configure one of the ubuntu desktops as “dhcp-relay-agent”?

How can I relay DHCP requests from LAN to WAN in linux so that the desktop connected to the LAN interface can have Internet access from WAN? Note: WAN has Internet access.
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4answers
3k views

Network interface/dhcp problems ubuntu with kvm and network bridge

I have a ubuntu system running 12.10 I am using KVM and have configured a bridge for the virtual machines, which is using nat forwarding. I am having problems with the connection dropping out ...
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1answer
37 views
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24 views

How does DHCP work when it's not “between” your modem and devices?

I've been looking into different options for running some services on a home server. One such option is Amahi. During the setup process they recommend shutting off any other DHCP server on your ...
2
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0answers
15 views

Prevent Windows Server 2012 from using DHCP-provided default gateway? [migrated]

How can I prevent Windows Server 2012's local network connection from using the default gateway provided by a DHCP server? I do not control the DHCP server so the solution must be implemented on the ...
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0answers
17 views

Domain name is not appearing in “work network”.Instead it displays “Network 9” [duplicate]

I have configured isc-dhcp-server and provided a domain name "anbu.com" along with the IP addresses and other details. My Windows 7 client got its IP address from the DHCP server. In the Network name, ...
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0answers
5 views

Cisco 1131AG: Wireless clients randomly unreachable

I have a weird issue with my 1131AG-E-K9. I set up a lab at home to get back into the topic after a few years break. My 1131AG is connected to one of the PoE ports of an ASA5505. Clients are 2 ...
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0answers
37 views

Split current network installation in two Vlans

here I got a (really) tricky problem In my home I have a basic router from my ISP and the DHCP Server that serves every mac address with a static IP in this configuration : Family devices : ...
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vote
1answer
100 views

Network interface configuration on Debian 6 (No DHCPOFFERS received)

I am trying to configure an interface to allow internet connection on a home server which runs Debian 6 x86. The server is behind a router which has DHCP enabled. The router IP is 192.168.1.1 with ...
5
votes
1answer
495 views

From my 192.168 box, how do I find 10.0 virtual machine on the same box?

I am running Ubuntu 12.04 and VirtualBox 4.1.12. I have created a Debian server under VirtualBox. For reasons I don't understand, DHCP grants my Ubuntu box 192.168.20.50 and my Debian VM 10.0.2.15. ...
0
votes
1answer
43 views

Internet access without NIC card?

If have a USB modem dongle for INTERNET connection. Can i access INTERNET from a brand new desktop/laptop without NIC card using this dongle? I feel that the dongle is just a modem ( with a DHCP ...
0
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1answer
547 views

How to force a new DHCP discover

I'm analysing my network traffic at home, and I want to force my Mac to completely renew its DHCP stuff. Renewing my DHCP lease only reveals two DHCP packets sent over my interface, but I want to see ...
16
votes
4answers
38k views

Release/renew IP address via Terminal in OS X

I am looking to release and renew my IP address in OS X 10.4 (Tiger) using Terminal. Essentially, I need the OS X equivalent of Windows': C:\\> ipconfig /release C:\\> ipconfig /renew ...
0
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0answers
66 views

Windows 7 DHCP flooding server with requests

Am attempting to connect a Windows 7 laptop to a Debian server running dnsmasq. The Windows 7 machine doesn't seem to like the DHCP info it's getting as it re-requests it every ~10 seconds. The log ...
0
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1answer
75 views

Windows Server DHCP role not working correctly in VMware Player

I've got a Windows Server 2008 running in VMWare player with the following roles: Active Directory Domain Services DHCP DNS The server is using the following credentials: The IP of the (DNS) ...
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0answers
2k views

Ubuntu Server 11.10 interfaces file unreadable

I am configuring ubuntu server 11.10 to go from dhcp to static and whenever I try to restart my networking manager, I get the error: command ran: sudo /etc/init.d/networking restart ...
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1answer
30 views

Unable to Set up DHCP and TFTP on Ubuntu

I want to transfer my kernel image to beaglebone black, and the guide mentions that I should have already set up DHCP and tftp on the host machine. I have set up the TFTP using: sudo apt-get ...
0
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1answer
50 views

How to setup this home network to allow connection between two subnets?

I have my home network currently set up like this: The Thomson router (192.168.0.1) is from my ISP and is pretty crappy. I have a much better Draytek Vigor 2820vn router that allows me to use ...
5
votes
4answers
1k views

Self-assigned IP address

I sometimes have problems dropping IP addresses after changing networks and get stuck with a self-assigned IP that I cannot drop by hitting the renew "DHCP Lease" button on my Mac OS X.5 Leopard. The ...
0
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1answer
26 views

Why doesn’t Windows Vista get an address from the DHCP server?

My Windows Vista PC does not get an IPv4 address from the DHCP server; viewing the network properties shows something (likely the DHCP request) being sent, but no packets being received. Manually ...