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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Connected to OpenVPN server (through WiFi), changing DNS on unprotected adapter stops Internet entirely

So whenever I connect to an OpenVPN with a configuration file I notice two things: The TAP- adapter has no gateway of it's own. Is that normal? Trying to resolve this problem: I copied all the ...
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0answers
8 views

Static LAN IP address not being saved. Always reverts to DHCP

I am running Windows 8.1 (64 bit) and going to my local network connections, right clicking and then going to properties of my Broadcom wireless connection I change from DHCP to static ip (IPv4) by ...
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2answers
22 views

Why can't I connect an Access Point to this Network?

A client hired me to install an Access Point to make his home network available via WiFi. The modem/router is a Motorola with the following specs (the list is based on observation as I don't have ...
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2answers
43 views

Windows not using manually set IP Address

Recently my windows machine that has been working without a problem for over a year decided to start using a dynamic IP address instead of the static one I manually configured it to use. The only ...
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0answers
8 views

Locate Host Name on LAN (DNSMasq on DD-WRT)

I am running DNSMasq as both my DHCP and DNS server on my DD-WRT router. I had thought that DNSMasq was serving hostname lookups from its leases and hosts files, but I have a few machines on my ...
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2answers
59 views

DHCP not issuing out IP addresses

DHCP on my network is no longer issuing out IP addresses. Every new device must be manually configured to connect to the network. After executing show ip dhcp binding, i noticed that all the ip ...
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3answers
29 views

IP Address conflict in a LAN

How to find if someone has taken a particular IP address in a Local Area Network? Or in a more generalized form, how to find the list of IP address that DHCP has allocated in a Local Area Network?
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1answer
33 views

Win 7/8/8.1 create wireless open/WEP network - any possibilities?

I have a very old (2003) equipment that has Aironet/Cisco 350 network adapter on board (no WPA/WPA2, only open/WEP authentication). I need to connect it with PC (Win 7/8/8.1) without external access ...
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2answers
84 views
+50

Change subnet on TP-LINK TD-W8961ND

I don't seem to be able to change the subnet on my router (spoiler alert - I'm not terribly good with networks so I would appreciate the help!). When I change the main IP address to 192.168.10.1 and ...
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1answer
9 views

how to use isc-dhcp-server in place of router dhcp

i have a virtual Debian installed on my VMware running on win 7 64 bit , i am using a bridged connection for my virtual machine , i installed isc-dhcp-server and changed the /etc/dhcp/dhcpd.config ...
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0answers
29 views

AD Dynamic DNS not working with Linux IPv6 [migrated]

I have an AD DNS/DHCP enabled server. I have mixed Windows and Linux machines/servers. IPv4 is working great with DNS/DHCP, even for the Linux systems. IPv6 is working great except that it won't ...
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1answer
28 views

internal static IP address configuration from router

How do I reserve an IP address for tleilax and ensure that tleilax only gets that reserved address? The tleilax box uses DHCP. When I look at attached devices, I see: Attached Devices Wired ...
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51 views

IPv6: Cannot reach outside of LAN (OpenWrt Router connected to ISP Router through Wi-Fi)

Hello dear server expert, I would like to ask for you help for my installation. I have a Freebox Revolution (I am French and my ISP is Free). The box provides IPv4 and IPv6. Every computer connected ...
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2answers
64 views

192.168.1.254 vs 255 DHCP IP assignment

I belive that with a 255.255.255.0 subnet you get 255 ip addresses. Whats the difference between DHCP servers that use "192.168.1.1 to 192.168.1.254" and "192.168.1.1 to 192.168.1.255"? Are both of ...
0
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1answer
16 views

FreeBSD default router

I have two network interfaces in a FreeBSD box, both configured with DHCP; each is assigned an IP and gateway. FreeBSD is using the wrong interface for outbound traffic. How can I override the default ...
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0answers
17 views

Can I seed what DHCP options are offered on my network connection WITHOUT server access

When you get a DHCP address from a DHCP server it comes with options. I want to see all of the options set. Yes, I know that I could bug one of our extremely busy sysadmins and get them listed off to ...
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1answer
15 views

Restarting BIND service getting error

When I restart the BIND service getting this error from syslog named[4960]: /etc/bind/named.conf:15: couldn't add command channel 127.0.0.1#953: address in use Even when I execute nslookup ...
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0answers
25 views

Windows 10 preview PC getting served static and DHCP address

Setup PC: Latest Windows Tech Preview IP address set to static. Router: R7000/DDWRT Lately I've notice, when checking devices that are connected to my router, that this PC has been showing the ...
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1answer
26 views

Problems Configuring Netgear Prosafe 7224v4 Switch

Our office has a Netgear Prosafe 7224v2 Switch which was installed a number of years ago. Currently the switch is not configured to act as a DHCP server thus we need to manually assign all our ...
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2answers
38 views

Do my other local computers need a static IP when I use port forwarding?

If I change my main computer to static and port forward to get a server hosted, does that mean that I need to change the rest of the laptops and computer on the network to static to get them to ...
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0answers
57 views

How to bridge two interfaces both on different networks with different IP addresses in OpenWRT?

My embedded Linux device—running OpenWRT—has two interfaces that are ath0 and ath1. ath0 is a WLAN port also runs a DHCP server. ath1 is used for Internet connection. Now, I have to setup these ...
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0answers
24 views

Unable to set static IP of a Win 10 pro pc with a Trendnet router. Error: Mac address must begin with 00

I am attempting to set a static IP for my pc, because it doesn't want to turn on DHCP. I need to either turn on DHCP, or set a static IP. While setting a static IP, the router gives an error of the ...
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2answers
23 views

Connect one router to another one >> ip conflict

I have 2 routers, the first one is connected to 2 switches 24 ports each one, and is there because it is vpn connected. The second one connects to one of these ports and is the wifi one. My problem is ...
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0answers
19 views

i3wm only displays DHCP working, normal?

So I've recently installed void linux [http://www.voidlinux.eu/] and decided to go with just a wm, so i3 it was. Last time I had used i3 it displayed DHCP:no but this time it is saying yes and even ...
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23 views

two different name servers for home network and vpn network

As a disclaimer: I am new to linux. I have the following setup: At home I have a router (AVM fritz box) that serves as a dhcp server and "dns" server for my local network. I don't know if it is a ...
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1answer
19 views

Win Server 2008 DHCP on Virtual Network

I'm new to network stuff. I have 2 virtual computers running in VirtualBox: 1 on Win XP and 1 on Win Server 2008. I'm trying to create a DHCP server and DNS server on my server. I know how to add ...
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3answers
97 views

Windows remembers old DNS suffix

I just changed the DNS domain of my local network from home.local to mydomain.local, after purchasing mydomain.com. I made all the necessary changes in my BIND and DHCP server, and linux clients on ...
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42 views

How to force “DHCP Discover” on Windows 7

I found that at certain network, Ubuntu, installed in my laptop, could not get DHCP address, whereas Windows 7 can get DHCP address. Thus, I tried to dump packets related to DHCP address acqusition ...
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0answers
40 views

Trouble with Static Leases on DD-wrt router

I'm having real issues trying to set up a new DD-WRT router. It is a netgear R7000 with build DD-WRT:- v24-sp2 (12/15/14) std - build build r25344 My set up is basically:- BT Home Hub 4 (Using just ...
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0answers
9 views

Autoresolve a hostname via “closest” network - how?

Having all linux(redhat) machines always on one VPN network and moving them between different LAN networks, how to setup hostname resolution(/etc/resolv.conf?, and DHCP server?, and DDNS server?, and ...
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102 views

Could not start DHCP client on windows 7 home premium. Error 5 access denied

DHCP client didn't start automatic. Trying start from services: Windows could not start the DHCP Client service on Local Computer. Error 5: Access denied. What should be fixed please?
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17 views

Linux IP aliasing with single DHCP and single STATIC IP address

I'm working on an embedded system with a single physical ethernet device. Using aliasing, I'd like the device configured such that one static IP address (call it s.s.s.s) is ALWAYS available. The ...
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1answer
92 views

Removing DHCP and DNS from Windows AD Domain

This is my first time posting here, so please bear with me. I have been searching for this answer for a few days now with no luck. Maybe my google-fu is not strong enough. I am a software engineer ...
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3answers
76 views

How to get an unused (on another host) IP range

I'm working on an embedded system that will feature a ethernet connection to a PC host. The product contains a DHCP server so the PC can automatically get an IP assigned. In order to not interfere ...
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1answer
46 views

Why unconnected network card periodically sends DHCP requests?

I have a PC with windows 7 OS. The PC has two network cards, one built-in 100Mbit, one PCI-E 1Gbit. The 1Gbit interface is connected to a linux-based router with DHCP server. The server provides valid ...
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3answers
68 views

What to consider when putting a router inside of another network, not controlled by me?

this question is a question from an users point of view, and a noob regarding network technology. I am living in an appartement block, where the internet is routed central (lets call it that way). ...
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1answer
20 views

DHCP List not empty after disconnection

I have a wimax modem connected to a router, a TP LINK router, the weird problem I am having is that it keeps dropping wifi, and I cannot reconnect to the wifi again. I connected the router by wire, to ...
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3answers
63 views

Why does my router stop giving out IP addresses

I've got a Cisco Linksys X3500 ADSL2+ router which we have been using fine for a long while, until all of a sudden, the router stopped providing IP addresses after a certain amount of clients were ...
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0answers
18 views

With new DNS settings, certain webpages break

I administer the network at a school. I recently changed our router's DHCP settings to use the DNS servers 208.67.222.123 and 208.67.220.123, the former of which is the OpenDNS FamilyShield server. ...
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2answers
59 views

How to ignore DNS servers coming from DHCP

I use one of those dns services that let you bypass region restrictions on Netflix and similar sites. However I noticed that recently it stopped working, even though I set up the service's dns ...
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0answers
32 views

DHCP server in separate broadcast domain and option 82

Recently studies of DHCP servers raise some questions, which I cannot find the answers to using Google. Many documentations state: "If there is only one subnet declaration, and no network interfaces ...
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0answers
20 views

What should /etc/dhcp/dhcpd.conf look like for a single router when configuring shared-network

Hi I'm just doing some tutorials to learn about networking, and I came across segregating a safe and unsafe network with DHCP using isc-dhcp-server This is what my config file currently has: ...
0
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1answer
37 views

Ignore DNS servers from DHCP lease

I've an Ubuntu box. When I connect to a wifi network, I get the IP address for wlan interface using dhclient. The problem is, I don't to use the DNS servers provided by the DHCP lease. How can I do ...
0
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1answer
54 views

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
136 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
117 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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1answer
37 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
63 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 ...
3
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2answers
113 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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0answers
71 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 ...