1
vote
1answer
44 views

Static DHCP binding

Good time of day, SF people. I have created a manual DHCP binding entry on a Cisco router so that a client would always get leased to it. The clients wants to get the same address on both of his ...
-1
votes
3answers
117 views

Prevent IP conflict from untrusted network machines

I maintain a small LAN (192.168.1.0/24) on which we have several untrusted machines, where the users of those machines have administrative rights or are able to connect their own machines to the ...
-1
votes
1answer
90 views

Enterprise DHCP server solution? [closed]

I have a network of about 1000 assorted devices, all of witch are running by static IP addressing. Given the size of the network and the lapse of technical advice, the addressing scheme is in chaos ...
-1
votes
1answer
122 views

Using DHCP on virtual servers (ESXI) [closed]

I am setting up a small lab with 5 virtual servers running on VMware ESXi 5. The servers are: Network Services server (CentOS 6.4) LAMP server (CentOS 6.4) File server (CentOS 6.4) Zimbra mail ...
0
votes
1answer
131 views

Can't obtain ip-addres from my DHCP server

I can't obtain a ip-addres from my dhcp-server and it's going trough a firewall (pfsense), The firewall(pfsense) and DHCP server are two virtual machines on my physical server(ESXI). As rules i use ...
-2
votes
2answers
73 views

How to connect two wireless routers by powerlines [closed]

To extend the wireless range I bought a pair of powerlines. So one of them is connected to the main wireless router which is provided by ISP company. And the other side of the powerline is connected ...
2
votes
5answers
212 views

Trusting DHCP-assigned IP addresses only

I manage a reasonably small network (150 machines or so). We have a DHCP server set up with reservations for all of the machines on the network and an exclusion zone set up over the entire range so ...
2
votes
1answer
382 views

Managed switch port-based DHCP allocation - general case?

I saw a strange comment bagging IT departments (i.e. sysadmins) on Slashdot the other day: half the time they cant even do a simple thing like provide a jack with a set IP address for us Reading ...
3
votes
1answer
2k views

Can a DHCP reservation use an IP address in the exclusion range?

Windows Server 2008 R2, running the DHCP service. DHCP Scope: 192.168.1.1 - 192.168.1.254 Exclusions: 192.168.1.1 - 192.168.1.99 If a reservation uses an IP address in the exclusion range (like ...
0
votes
2answers
168 views

Server reverts to DHCP from time to time

I have an Ubuntu 10.04 server with static IP address configuration: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static ...
0
votes
2answers
566 views

Force DHCP server to give a new IP address

i connect to the web via LAN and IPs are assigned via the DHCP server. so a simple sudo dhclient -r sudo dhclient does not work. is there another way to get a new IP address from the DHCP server? ...
17
votes
4answers
11k views

How does a computer obtain an IP address via DHCP?

How does the computer know which device on the network to query? How does the default gateway factor into this? Pretty much, what is the chain of events that occurs when a computer tries to obtain an ...
3
votes
2answers
843 views

Deny Static IP Assignments

I am currently using a SonicWall Pro 2040 with DHCP enabled, but only with static IPs mapped to specific MAC addresses. There is no dynamic IP scope being used. Currently, no DHCP request will resolve ...
0
votes
2answers
2k views

Windows 7 DHCP client not working on Wired but works on Wireless

I've got a 1 year old Dell laptop running Windows 7 Pro 32 bit. Last week, the PC started refusing to obtain an IP address via DHCP, but this only happens on the Wired Ethernet connection. The PC is ...
1
vote
1answer
236 views

Fixed IP on Linux boxes in DHCP router LAN

Folks, I am trying to use fixed IP on few Linux boxes in my LAN which uses DHCP right now. My ISP router is configured to use DHCP and there already are quite a few laptop users who would want to ...
0
votes
2answers
1k views

How to change the 'internal IP address' of a Juniper SRX210H

How do I change the 'internal IP address' (Not the WAN IP) (192.168.1.1) to something else via the 'Juniper Web Device Manager'? Thanks!
0
votes
2answers
230 views

Server is losing its static IP address

I have a Ubuntu server with the following in /etc/network/interfaces: auto eth0 iface eth0 inet static address a.b.c.d netmask 255.255.255.0 gateway a.b.c.254 When I run ...
1
vote
7answers
851 views

Audit reserved IPs for UNIX/Linux ISC-DHCP

Are there any good FOSS tools to do an audit of reserved IPs used in a Linux/UNIX ISC DHCPd environment? I'm trying to ensure that we do not have stale IP addresses reserved when old MAC addresses ...
0
votes
1answer
548 views

Assigning Sequential Dynamic IP Addresses in DHCPd

I'm setting up an internal network with a server running Ubuntu 8.04 as a Clonezilla host and DHCP server. It will be the only server on the network. I am interested it having it assign IP addresses ...
4
votes
2answers
21k views

How does 3G/Mobile phones get allocated an IP address? Does this mess with Google Analytics?

This question is in two parts. Q1. How does a mobile phone get an IP address over 3G? Like, would it get the same IP for a shortish period of time (Eg. 1 day, etc)? Because my phone is constantly ...
0
votes
2answers
287 views

Netgear WNR854T has trouble resolving certain names on local subnet

I have a peer to peer network set up with a linux web server as a test environment, and a NetGear WNR854T is set up as a wireless gateway and router. However, from time to time I am unable to resolve ...
5
votes
7answers
4k views

Static IP Address assignment vs DHCP address assignment

I manage a small-ish network that consists of less than 70 nodes. The previous system administrators opted to have a dhcp server and manually set dhcp addess. I have opted to rather use dhcp ...