Why Should Wireless And Wired Networks Be On Separate Subnets
Oct 24, 2011
With traditional classful subnetting, the same number of host bits is used to designate the subnet ID for all the resulting subnetworks. This type of subnetting always results in a fixed number of subnets and a fixed number of hosts per subnet. For this reason, this is known as fixed-length subnetting. The decision about how many host bits to use for the subnet ID is a big planning decision. There are two considerations when planning subnets: the number of hosts on each network, and the number of individual local networks needed. The table for the subnet possibilities for the 192.168.1.0 network shows how the selection of a number of bits for the subnet ID affects both the number of possible subnets and the number of hosts that can be in each subnet. One thing to keep in mind is that in all IPv4 networks, two host addresses are reserved: the all-0s and the all-1s. An address with all 0s in the host portion of the address is an invalid host address and usually refers to the entire network or subnetwork. An address with all 1s in the host portion is used as the local network broadcast address. When a network is subnetted, each subnet contains an all-0s and an all-1s host address that cannot be used for individual host addresses.
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Mar 13, 2011
I have two groups of students I wish to seperate by subnetting. Students are nine in each group, and there's one Cisco router (or W-server set as a router). After giving group A an IP of 192.168.200.1, and group B an IP of 192.168.200.129 and connecting each interface to it's own seperate switch, what else does each PC user need to do to establish communication with members not in his/her own subgroup?
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Jun 25, 2011
I'm trying to set up 2 separate networks in my home, both of which have access to the internet through a single ISP.I have set up my networks using 2 routers as described in the "Version 2" scenario found here: url...The problem is, a computer connected to the LAN side of Router 2 is able to ping and map shared folders on computers connected to the LAN side of Router 1. According to the writeup (last paragraph), this should not be the case.I have been over the setup multiple times to ensure it is per the writeup but each time, I am able to ping and map.Is there some additional router/computer settings that I may be missing?FWIW, here's my take on what is happening (with the ping): When a computer on the LAN side of Router 2 (submet 192.168.1.x) does a ping to a computer on the LAN side of Router 1 (subnet 192.168.0.x), Router 2 sends the request to its Default Gateway (since it's a different subnet).Router 1 however, recognizes this as its LAN side subnet and forwards the request to that computer. The ping response is then routed back from Router 1 to Router 2.
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Feb 27, 2012
Using a Linksys E2000 and Linksys WRT54GL (both flashed to most recent firmware), I am trying to set up Network "A" and Network "B" on one modem. I do not want either A or B to be able to see each other for security purposes. Both are secured networks for the wireless connections and have different SSIDs.
After online research, and the inability to find my exact question answered, this is what I did and I'd like to know if I'm missing anything to keep A and B completely separate. Or, if I've done anything that will cause any problems on my network. [code]
I disabled the ability to change settings using wireless connection on both routers.
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Sep 3, 2012
I currently have a Linksys WCG200 wireless gateway cable modem. The computers in my office are connected to it via ethernet cables and I use the wireless signal in the rest of the house for my laptop and guests. I'm (still) using Win XP Pro on all the computers.I'm about to start a work at home job doing customer service and I am not allowed to have a wireless network that might broadcast customer information, so I need to be able to prevent that from happening. I'm assuming I'll need two separate networks?All computers need internet access and if it's possible I would still like to be able to share files between the two networks (assuming I need 2 different networks), but it's not the end of the world if I can't do that.
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May 1, 2011
I have 2 PCs at home. Lets name one of them as PC 1 which has two onboard LAN Ports. Now, PC1 has to connect to PC 2, just a home network for easy transfer on files and stuff, and it also has to connect to the internet via a network. The problem is both of them use static ip and when I tried configuring PC 1, it allows only one of the connections to remain active. I simply get an error otherwise saying "Multiple Gateways" will cause conflict and I will be stuck with only one connection. After much study I "somehow" connected both. I vaguely remember using the "route" command in cmd to achieve this. But now, I am getting an error when I try to access PC 2. My Internet is working fine.I am not network savvy at all. run both these connections from PC 1. I should add that I can in no way modify/change/or do anything else to my internet network since it is out of my control. I can do anything, however, for my Home Lan with PC 2. I run windows 7. Both the connections are wired, by the way.
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Jan 24, 2013
I have a Windows 7 Pro Desktop with an on-board Ethernet and an Axis USB To Ethernet adapter. The on board Ethernet is configured as dhcp and obtain the address 10.162.146.123 with 255.255.255.0 subnet. The Axis USB to Ethernet adapter is static ip configuration with 10.38.25.37 and 255.0.0.0 as subnet. Under the adv settings I have also another ip 11.38.25.37 with 255.0.0.0 subnet. When the Axis is communicating 10.38.0.1 network I can not access the internet using the on board Ethernet 10.162.146.123. I have to disable either one of the cards to access one network at a time.
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Feb 5, 2012
I would like to set up two separate networks from one internet connection(modem), with the goal being to have a public network(Network A) that would have a small server on it, and then having a second secured network(Network B) that would have my personal computers on it. And both networks having connection to the internet. (The idea being that if the server somehow became compromised that my personal computers and their data would be safe)I have done some research and found that many people claim this can be done with just two or three routers, but none of them go into any detail about how to configure the routers. Below are the physical setups of the two options that I have come up with in my research, which if either would you recommend? And how would I configure each of the routers?
--------------
Modem/router 1 (Network A public)
--Internet-in WAN port
--port 1 to WAN of router 2-------------l
--port 2 server
[code]...
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Sep 12, 2012
I have two subnets at my home and both run through my Cisco router. One is my private LAN with access to the Internet, ie your standard home network. The other is a semi-public network that I share with friends through an encrypted GRE tunnel system(DMVPN) over the Internet. I have a server on that semi-public network and I can access my friend's servers from my server, but not from my main PC on my private network.
Is there a way I can access both networks from only my main pc using two nic's?
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Mar 29, 2012
how I can setup two separate networks on a Westell 327w modem/router. I know this question has been asked to death and I've utilized the search function, but I still don't know how to make this work. I have a computer that I plan on using for important business and my sibiling has my other computer that he uses for gaming and downloading stuff. His computer is connected wirelessly to the Westell 327w. My computer has no internet access at this point. I would like to have both connected wirelessly to the internet, but keep them completely separate and as secure as possible, as he downloads some questionable things.
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Apr 26, 2011
I have two separate network with their own internet access as shown below I want to keep all setting of the left network unchanged. I can change the IPs and setting of the right side network.I want to be able to access all devices of the two network from my computer but in the same time the two network work as usual with no problems ( the same when they are sperate).One option is to set the LAN of modem 2 to 192.168.2.2 and connect one of the LAN port to LAN port of the Mkrotik router. Set the WAN of my private home router as
IP: 192.168.2.100
subnet mask: 255.255.255.0
gateway: 192.168.2.2
Home router LAN: 192.168.3.1
Is their another method to connect the two network and keep the same setting for the network on the left side?
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Feb 9, 2012
I am trying to make 2 COMPLETELY seperate networks with only 1 internet connection. We have routers, switches and all that. But we need to know how to set it all up. there are 2 companies in the same office, each company needs their own network at which they can view eachothers files but in no way view the other networks files.
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Oct 3, 2012
I'm new at this stuff and very stumped. I have one WAP with multiple SSIDs that support VLAN ID (for a private and guest wireless network) and a managed switch that supports tag or port based VLAN ID. How do I set up the switch so that the networks are separate, but can still reach their own routers to get on the Internet? In case details are necessary, the WAP is a Cisco Aironet 1130AG and the switch is a Netgear FS750T2
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Feb 5, 2012
We are a small office currently running a regular network (9 wired, 2 wireless) and also using the "guest" feature (7 wireless) on a Linksys E2000. We have a switch to connect our wired equipment to the E2000. If "A" is our regular network, and "B" is our guest network, is it possible to have 2 routers on 1 cable modem and still prevent network "A" from seeing Network "B" and vice versa?? We are looking to do this because we will soon be exceeding the maximum guest users (10) allowed by the E2000. We have another Linksys router in storage, I think it is a WRT54G, that we would use if this is possible.
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Mar 3, 2013
I want to connect 2 routers like this picture.No need to have it as separate networks.
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Oct 20, 2011
I want to share one broadband connection between network A 192.168.1.xxx and network B 192.168.0.xxx. Network A is SBS 2008 while B is Linux with static IPs.
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May 7, 2012
1. I currently have a Comcast Business Class Gateway, Cisco 2100 Series WLAN Controller and a Cisco ASA 5505 all connected together to supply LAN and WLAN internet connections on my network.
2. I also have a Card Access Security System on it owns network. It currently does not have internet access.
I would like to put my security system on the internet so that I can support it remotely. To do this, it has to be on a firewalled internet connection.Can I put the two networks on my ASA 5505 and keep them seperate? I don't want to provide a path into the Security System through my current LAN & WLAN. But I do need a frewalled internet connection on my Security System. I am trying to avoid purchasing a seperate firewall.
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Jul 31, 2012
I have two dir655 routers that are connected. The second router is not setup as a wireless access point, but I am open to that if it will work. The second one is going to serve as a public wifi in a business, with a separate SSID. The first one is going to handle the local business network, with its NAS and printers. How would I prevent the public wifi from accessing the first router?
I have tried the guest wifi partition setting, however it still allows access to the lan devices on the first router. It does partition with the second router properly though, but thats not worth anything to me cause there are no lan devices on the 2nd router.
Would it work right if I turn the 2nd router into a access point, disable the dhcp server, and set it up with the guest wifi partition?
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Jan 29, 2013
I have a network set up between two buildings. Each building has its own internet connection and DHCP server, building A using an RV180W router and building B using a linksys product. A WDS bridge has been set up between the two buildings using two wireless access points.The goal here is to allow clients in either building to be assigned an IP from their respective DHCP server (and thereby use that building's internet connection), yet still access network resources (eg file storage, printer, etc.) in the other building should the need arise.I have tried to set this up by having the RV180 assign IP's in the range 192.168.0.xxx to its clients in building A, and the linksys to assign IP's in the range 192.168.1.xxx in building B. I have enabled Vlan 1 and Vlan 2 on the RV180 - vlan 1 runs a DHCP server for building A. Vlan 2 runs no DHCP server and is directly connected to the WDS bridge to building B. Inter Vlan routing is enabled on both Vlan 1 and Vlan 2.On the WDS bridge modules, ive assigned both static IP's in the 192.168.1.xxx range (vlan 2 range). I've specified their dns and default gateway as 192.168.1.2 which is the static address for the RV180 in vlan 2.From a PC in vlan 1, I can ping and access the webgui for the WDS bridge modules which are in Vlan 2. However, i cannot ping any other computer in Vlan 2 which is set to accept a dynamic IP from the DHCP server operating in Building B. I assume this is because the WDS modules point to the RV180 as their default gateway and dns server, while the clients that have accepted a dynamic IP from the building B DHCP point to that device as their default gateway and DNS.I am considering trying changing the DNS and default gateway on the building B side of the WDS bridge to the building B values to see if that works, but am concerned i would lose all connectivity to the webgui from building A if i do that.
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Aug 15, 2012
I'm an architect working in a small office that happens to be home to two seperate businesses, each with their owner network. However, these two networks want to use the same large format printer. I recently purchased the RV180W since the Cisco representative told me i would be able to connect both networks to the router so they can both see the printer without seeing the files on each of the other networks. We simply want to share the same printer.
Network 1:
192.168.4.1
Network 2
192.168.2.1
Large Format Printer
192.168.4.151
Network 1 has the RV180W as it's router with three gigabit switches. Computers and peripherals are connected to the three switches. 1 port open on the last switch.
I want to configure the RV180W to see both 192.168.4.1 and 192.168.2.1
What settings need to be modifed in order to accomplish this? Do I need more equipment? Is it easier to put a wireless card in one of the computers on the 192.168.2.1 network and then set it to see the 192.168.4.1 network?
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Sep 1, 2011
We have 2 separate networks here, 1 for data (192.168.0.x) and 1 for VOIP phones (192.168.3.x).
I need them to both be connected to different ports on a switch (Cisco SG 300 10 port managed switch) which is then linked to another switch (Cisco Catalyst 2960 48 port switch). Then on this 2960 switch I want the link to be split back into the 2 separate networks. I think that I need to create 2 separate VLANs and assign them to different ports.
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Jan 19, 2013
We have a two separate businesses in the same building who will both need access to shared resources and the same internet connection. They will need to remain on separate subnets and cannot communicate directly to each other. The current switch is a Cisco ESW-520-48P and we are looking at purchasing an SG-300-20P for the new business moving in. Heres how we envisage setting it up:
ESW-520 will host Company A's network. Workstations, servers etcSG-300 will have two VLANS. VLAN1 will host all Company B's network. Workstations, servers etc. VLAN2 will host the shared resources such as printers. The internet gateway is a UNIX based system with 3 NICS. 2 NICS are taken up by ADSL connections while the other NIC is the LAN, which would connect to VLAN2 on the SG-300. We would like to define which ADSL connection to route through depending on which subnet traffic is originating. The ESW-520 will need access to the shared resources and internet gateway on VLAN2 on the SG-300.
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Dec 12, 2012
I am trying to set up two routers so that I can offer free wireless connectivity via three AP's in three adjoining rooms on a first floor and secured wireless and wired network connectivity in upstairs offices. The setup is like this:
Verizon DSL connectivity..static IP
The gateway modem/router is a Verizon DLink DSL 2750B with three ports connecting to three wired Access Points in three first floor adjoining rooms, and the 4th port connecting to a Cisco E1200 (wireless and ethernet router) located next to the Verizon Dlink. I would like the Verizon DLink to give open wireless connectivity via the access points and also connect to the adjacent E1200 router.
I would like the Cisco E1200 to offer secured wireless and ethernet connectivity to the upstairs offices. (connecterd to the Cisco E1200 is a 24 port Netgear switch.)I have spent considerable time talking with Verizon and Cisco/Linksys but have not been successful in just how to set this up.A former tech actually did have this setup but for what ever reason the settings were reset to factory defaults with no written record as to the necessary settings.
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Apr 30, 2013
Small office, 2 RV042, 2 DSL connections. 1 is used striclty for the business side, and the other is for our CCTV network. They also have seperate DSL connections as we have 2 external IP address for clients to connect remotely. We don't want to take away our exisring setup, but would like to bridge both networks so a few of our internal clients can connect to our CCTV network and use some of the devices. Right now they come in on VPN but its not as fast.Is this doable without adding additional hardware? Both networks need DHCP enable as well.
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Sep 6, 2011
I have a Sky broadband router downstairs which has wired and wireless links to workstations downstairs. I have a wired network upstairs in my study. I want to put a router into the study that will link wirelessly to the Sky router downstairs and link the wired workstations to the broadband.
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Dec 21, 2011
I have a static DSL connection and my ISP is giving me 4 static IP's. I have connected my RV042 to the DSL modem and I have now 1 subnet at 192.168.0.0. What I want to create is a WEB server/ Email server, but to sit on a different subnet - 192.168.5.0. For now I have connected the server to the DMZ port, but I am unable to to access it from WAN, only from LAN. how to configure properly the 2 subnets (192.168.0.0 and 192.168.5.0) and how to forward my static address to the server which I which to be on the 192.168.5.0.
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Feb 17, 2012
I have two separate wired networks. Network 1 has a wireless router (an adsl modem). Router of the Network 2 is not wireless. Can I replace router of network 2 with DIR-600 to make a wireless connection between these two network segments ?
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Apr 4, 2012
I have 4 computers (3 laptops, 1 desktop) in a shared office. We get internet access using their wireless network. All works fine. However, I need to share a printer amongst all of the computers. The printer is LAN enabled and I would normally just put all the PCs on a hub, together with the printer and share it that way. BUT my question is can we access the internet using the wireless network and the printer using a separate wired network at the same time?
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Jun 12, 2013
I have 2 sub nets within my office: 172.16.1.0/24 and 172.16.2.0/24. All devices on each subnet are wired independently from each other into the server closet. Previously each sub net had it's own switch in the closet to connect to that sub nets servers. We are replacing the 2 switches with a single Dell 2816 managed switch.
Is there a benefit to setting up the switch with 2 VLANs over just letting everything pass through the switch in un managed mode?
My only security concern is this: 1 sub net has access to the internet while the other does not. Does setting up 2 VLANs provide additional security by preventing 1 subnet from accessing the other? In other words, if a computer with internet access gets hacked will it being on one side of a VLAN prevent the hacker from accessing the other subnet?
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Aug 15, 2012
I need to NAT some subnets to one IP and other subnets to another IP. The range command want work because some of the subnets are out of order.For example subnets 192.168.1.0 - 192.168.7.0 and 192.168.25.0, 192.168.28.0 nat'd to 1.1.1.1. subnet 192.168.26.0-192.168.27.0 nat'd to 1.1.1.2
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Nov 24, 2011
I have a sonicwall firewall connected to the LAN port of the RV016 router and two DSL modems connected to the WAN ports.
Ip address allocation:
Firewall
192.168.50.9
RV016
LAN - 192.168.50.10
WAN - 192.168.60.1
WAN - 192.168.61.1
What configurations do I need to enter into the RV016 to allow other networks connected to the firewall(192.168.3.0, 192.168.2.0) to access the internet?
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Jan 16, 2013
My fiance recently signed up for the Screen-wise Panel for Google research. Basically they monitor your TV usage and your internet usage. As part of the program they installed a Cisco WIFI router. I've got no issue with them logging the sites visited etc but I'm a little worried about them possible collecting private information (banking / work related stuff) that I don't want going out there. According to what I've read what's supposed to happen is they replace your router with the new Cisco router.The "technician" who came in and installed the router was actually a builder and not an IT technician and rather than replace our router he connected the Cisco router into port 4 of our router... I wasn't in at the time.
What I was looking to do is separate Port 4 of my router into a separate VLAN that can access the internet, but not access anything on ports 1-3, or the wireless. However, I want to be able to see everything on port 4 from the other side (in other words I want to see "into" the port 4 VLAN, but don't want them to see out). I also wanted DHCP to assign IP addresses correctly depending on where you were plugged in. In this example the first VLAN (your current router ip address) is going to be on 192.168.1.1, and the second VLAN (the new on we create on port 4) is going to be on 192.168.2.1.This is exactly what I'm looking to do, I could then connect the kids machines / tablets / ipods to the Cisco router and have the main machine and my work laptop on the main router... but I don't have a clue how to do it. </quote> Is this something that I am able to do with the Netgear router I own and is it hard to set up?
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Apr 25, 2011
I work in the field at multiple accounts on machines/subsytems which have internal private wired lans within each particular subsytem. I use my laptop with a 3G connection to access the internet while onsite. I also connect wifi, to a portable router I carry, to the sybsystems wired network. Each particular machine/subsystem always has it's own particular private lan/subnet. I only work with a single machine/subsystem at a particular time.What is the easiest or best way to do this without having to always change the ip address on the wireless router (to match the subnet addresses on that particular machine) I use for each scenario. Is there a way to keep the router ip address the same always and add routes or something using a script or something that I can automate? I need my internet 3G connection (which is always my default gateway) as well as a connection to machine's internal network simultaneously (2 different subnets using 2 diffent adapters (3G and Wifi adapter)).
There is never any existing routers on these internal networks. Sometimes there is a DHCP server though. In the case where there is a DHCP server, can I just connect the WAN port of the Wireless Router to the internal network and let the internal network with it's DHCP server act as though it is the "so called internet/broadband connection"?In the event there is no DHCP server on the network, will I have to just continue to alter the address/range in the router?Also, I always have DHCP disabled in the router when using.
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