All Questions
50
questions
0
votes
2
answers
48
views
VMware DHCP server (vmnet-dhcpd) rejects option "rfc3442-classless-static-routes"
I am trying to set up the VMware DCHP server to push a static route (192.168.248.0/24 -> 192.168.248.129) to DHCP clients (VMs) connected to a custom interface called vmnet14. I referred to this ...
- 125
0
votes
0
answers
457
views
How to setup two routers seamlessly without having double NAT
I have two wireless routers, a generic one provided by ISP which is GPON ONU/Wireless router and a TP-Link.
I need an upgrade because the generic one provided by the ISp unfortunately has several ...
- 101
1
vote
1
answer
998
views
At my home, when enabling DHCP gives me a default gateway. At my workplace, enabling DHCP gives me no default gateway. Why is that?
I'm setting up a local dicom connection at my home and it all works fine when there is a default gateway between computers. But at my workplace its not working. I need to set computers at my workplace ...
- 11
0
votes
1
answer
407
views
pihole-FTL (dnsmasq) removes the default route when supplied with option 121
I have a Linux box that serves as a DHCP, DNS (via pihole-FTL) and WireGuard servers. I wanted to make the VPN network reachable from the network that device is on. After some research I found option ...
0
votes
1
answer
26
views
Make all net clients of a wifi router on a subnet have IP addresses in the form of clients of the parent router
i have an ADSL wifi Zyxel router connecter to outer internet and it serves IP addresses in the form of 10.0.0.x by DHCP - which is correct. Then i have a TP-Link wif router connected to Zyxel as a ...
Tomáš Bažant
1
vote
0
answers
1k
views
How to set the default outbound interface in Debian when using multihomed interfaces on EC2
In Debian 10 with an Amazon EC2 AMI (as of March 31, 2021), the /etc/network/interfaces file looks like this:
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
...
- 153
0
votes
2
answers
1k
views
Access different subnet IPs on two different interfaces
I'm trying to configure my Raspberry Pi to give me access to devices connected either of eth0 or wlan1.
Desired function is this:
User connects to RPi AP via wlan1 and is given an IP (192.168.4.x)
...
- 111
0
votes
3
answers
321
views
Does an off-the-shelf router have all LAN ports bridged?
I want to roll my own router, as the one provided by my ISP is terrible.
The router of course provides DHCP and routing on all 4 of the LAN ports.
Does this mean that it provides DHCP and routing on ...
- 289
8
votes
2
answers
6k
views
How should I distribute IPv6 addresses to a home network?
(this was flagged as off-topic over at Network Engineering, and suggested to move here)
I have finally got an IPv6 address for my network. Being able to do VoIP and peer-to-peer networking without ...
- 424
0
votes
1
answer
938
views
How to setup domain to point to home web server?
I am setting my home server as a website server. I am struggling to make it work. I have bought a domain and set it up correctly, but I can't reach my server. Below you have my network distribution. I'...
- 11
1
vote
1
answer
340
views
OpenBSD 6.6 wlan DHCP no link, routing issues
I've been bashing my head against this for a few days so I'm asking for help.
The machine is a Thinkpad using a Intel PRO 2100 wifi card with the ipw driver (https://man.openbsd.org/ipw).
I tried ...
- 13
0
votes
3
answers
122
views
Connecting subnets controlled by master net
Recently i tried to make fairly complex (for me) network, i have FFTH and very simple master router which i cannot change (it has ONT) and 3 "slave" routers.
My goal is to connect everything like in ...
1
vote
0
answers
61
views
Make my LAN independent for local routing (DHCP + static routing) while connected to a cable modem with DHCP which cannot be disabled (ISP)
First of all, I want to say that my knowledge about networking is basic (I'm a web developer, not a net admin :D)
I have a local network composed by:
A cable modem with routing capabilities (Let's ...
- 11
0
votes
1
answer
79
views
DHCP ACK requests from unknown IPv6 adres
A couple of days ago ive set up my own router. Im pretty new to network related topics and discoverd something in the logs.
Everything worked Just fine until i suddenly lost my connection to my modem,...
user1050116
1
vote
2
answers
5k
views
How does DHCP server knows what router interface is the gateway for each different scope
If I have a DHCP server as on the Network Diagram graphic above on the broadcast domain of the fa0/1 and I create three scopes for example:
name: "scope_fa01"
range: from 192.168.1.1 to 192.168.1....
- 11
3
votes
1
answer
598
views
How do I re-establish connectivity to the internet (cannot assign addresses now) after setting static ip in openbsd?
I recently asked a question on stackoverflow regarding not being able to push git commits from my OpenBSD (6.3) machine to GitLab, since changing it to a static IP. It turns out that the problem ...
1
vote
1
answer
3k
views
How to forward DHCP functionality to next router?
My printer is behind a router (192.168.15), which is connected to another router (192.168.1). In order for me to see the printer from the 192.168.1 router, I need to disable DHCP functionality of the ...
- 188
0
votes
0
answers
188
views
RAETH ethernet switch unable to receive packets/DHCP
I've been working on a common RALINK platform (MT7621) and I've had some trouble getting the ethernet ports to receive packets, which I assume is the main reason they cannot receive an IP from the ...
- 1
0
votes
2
answers
1k
views
How to separate DHCP and BOOTP?
Right now I have setup with "router" PC with 2-LAN-ports-motherboard under WS2016. It routes packets between LAN and Internet. Also it assigns DHCP addresses, provides BOOTP for diskless boot LAN ...
- 379
1
vote
1
answer
285
views
Second NIC only to serve DHCP requests
I've got a server running Lubuntu with IP 192.168.1.11/24.
DHCP server is running and handing out IPs for the whole subnet.
192.168.1.1 is my home router that is routing all other traffic to 192.168....
- 873
1
vote
1
answer
235
views
Route issue with two interface network
So I'm not entirely sure if this is possible, I've just been trying a few things in the hope of getting a working solution.
I've set up my device's eth0 successfully through dnsmasq, serving as a ...
- 111
1
vote
1
answer
55
views
Connecting blackbox host to PAN
I got following scheme:
/-----\
------------- ( ISP )
+---------+ / \-----/
| 0 --/ +---------+
| gateway 1 ---------- ...
- 13
1
vote
1
answer
249
views
How does a NAT router obtain its IP address?
I have a question about DHCP and NAT.
I know NAT translates local IP addresses and ports into a single IP address and specific ports that can be used to communicate with the Internet.
I also know ...
- 31
0
votes
1
answer
36
views
Static network want to add guest dhcp router
My work would like me to add a guest wireless for our customers. The problem I have is the system they have set up is all static ip's.
How can I add a wireless router to the network so guests can ...
0
votes
0
answers
897
views
Ethernet connection dropping - DHCP issue?
A user with a Fedora installation is experiencing intermittent interruptions to his wired internet connection on the LAN. I've swapped cables and ports and double checked my VLANS and switchport ...
- 778
1
vote
0
answers
684
views
2 APs over Powerline Network within same IP subnet cannot see eachother?
I am having issues setting up my home network using powerline adapters.
My Setup
I have a Gateway, a Router, 3 Powerline ethernet adapters, and a Powerline Wifi Unit (TP-Link TLWPA4220).
All of the ...
- 11
0
votes
0
answers
218
views
dd-wrt subnet from network with in a network
I am testing some network configurations. I am trying to create a network within a network for TESTING PURPOSES ONLY. Basically the gateway for ARouter(made up name for main router) is 192.168.0.1(for ...
- 644
1
vote
0
answers
673
views
Win7 load balancing over 2 default gateways and 1 interface
This is a scenario I've been working on lately: My PC has 1 NIC connected to a 192.168.100.0/24 network. This network has 2 gateways to the Internet, namely .1 and .254. Now I want to get to the ...
- 11
0
votes
0
answers
747
views
Several Routers and DMZ, WAN, Local LAN
I previously had:
A PS3 directly connected to the router given to me by my ISP (Router A). I had the console in a DMZ on this router at IP 192.168.1.33
So I had enabled UPnP for this router and setup ...
- 103
69
votes
2
answers
123k
views
What is the difference between ARP binding and DHCP address reservation?
In my TL-WR1043ND I have these functionalities and both of them pair an IP address to a MAC address. What is the difference?
I read that ARP is for security reasons, others say it is for Wake-on-LAN. ...
- 5,234
0
votes
0
answers
1k
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 ...
1
vote
0
answers
291
views
Static routes in ISC DHCP
I have an Ubuntu 14.04 server at home running bind and ISC DHCP. Bind is caching from unblock-us.com so that I can get access to US Netflix content. This all works fine.
I'm running into trouble ...
- 11
2
votes
2
answers
4k
views
How can i keep an entry in my routing table, even when the associated interface goes down?
I have a linux box set up as my internet router. I have the eth0 interface connected to the lan, and the eth1 interface connected to a pppoa modem and configured with dhcp to my public ip. Due to ...
- 298
1
vote
1
answer
3k
views
Static route set from dhcp
Does anyone know if it is possible to add static routes with dhcp? I know that there is option 121 in dhcp but I read that it can set routing via some gateway IP, and I need to set routing via device. ...
- 13
1
vote
3
answers
7k
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 ...
- 11
5
votes
0
answers
10k
views
DHCP option to control interface metric
For some reason Windows is using only one interface for local network broadcasting (the one with lowest metrics). When client connects to VPN network, i want it to make new network preferred for ...
- 51
4
votes
1
answer
9k
views
Why does my (home) router append a DNS suffix?
I wonder if any other people have come across this. I've rented rooms in two houses this year, and they both have Sky (a UK ISP) Broadband routers. For some reason, the router I currently use hands ...
- 257
0
votes
0
answers
769
views
Network resource access control (maybe using VLANs?)
I'm trying to set up a network that has a couple of different device groups with different access rights. Physically, devices are connected to the network either via wall-ports or via one of several ...
- 1,041
11
votes
1
answer
12k
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. ...
- 367
1
vote
2
answers
2k
views
Set up internal DNS to point to that DNS server?
I have Windows Server 2008 running on my network with the following properties:
Internal IP: 192.168.1.100
External IP: 242.24.124.12
Now I have registered a domain (example.com) and have it ...
- 696
6
votes
3
answers
14k
views
What does asterisk meant in route command
I have two network interfaces present in two different subnets and are configured as DHCP. When I run route command I am getting following output with asterisk in Gateway. What is the meaning of it?
...
2
votes
1
answer
2k
views
Setting up routing table via DHCP
I have a system attached by two ports to a DHCP server which gives out the following information:
Port 1
Ip Address Mask Gateway
10.170.99.38 255.255.255.128 10.170.99....
user1568623
0
votes
1
answer
60
views
DHCP/routing oddness
I have a Squid proxy server on my network that is connected to the DHCPd server (commodity router) through a commodity switch. If there is a break in the connection (eg router needs to be rebooted) I ...
- 514
2
votes
2
answers
15k
views
Running two wireless networks, with two different DHCP ranges (Virgin Media superhub woes)
I'm trying to create two wireless networks in my house, that would provide the client devices different ip address ranges and DNS settings, depending on which network they connect to.
My current ...
- 153
0
votes
2
answers
377
views
Enabling access to a home server from "Internet" side
I wish to enable remote access to my linux home server, so I can use it when I'm not home.
I tried doing so using port forwarding as follows:
http://<RouterInternetIP>:<SomePort> => ...
2
votes
1
answer
2k
views
Why is my static IP address different if I plug in a router?
I just purchased a static IP package from my ISP, and was told the IP was something like 24.x.x.x. And they assigned the static IP to the modem.
So, if I plug my cable modem directly to my laptop, ...
- 705
2
votes
2
answers
1k
views
Using multiple interfaces on a RHEL5.5 x64 machine
I am trying to use a statically-assigned address on one interface (eth1) of a server and have a dhcp-assigned address on another interface (eth2) on the same subnet (172.17.11.0/24).
When I setup a ...
- 10.2k
6
votes
1
answer
21k
views
I don't want my DHCP to be a default gateway
I have a device which runs a DHCP server. When I connect it with USB to my computer, the PC gets an IP address and the device becomes the default gateway. I just want the device to agree on IP ...
- 630
3
votes
2
answers
1k
views
How to set up DHCP-configured access through a Linux box?
I would like an old desktop box to use my laptop as a router to access the internet. Here is my setup:
I have one ethernet port in the side of my laptop which I want to use to get internet access to ...
- 1,768
0
votes
0
answers
8k
views
2 default gateways, one to 0.0.0.0... with DHCP
A problem that I have here with Windows 7 (RTM) and Windows Vista (SP2), on multiple machines, is that clients get a default gateway of the DHCP server (like they should) but on top of that, also a ...
- 380