Networking :: Setting Up A Subnet On A Wireless Network?
Sep 13, 2010
I'm living at a friend's right now, and he's got a wireless access point in the house that I set my laptops wlan0 interface to route through the eth0 to my desktop. It's been working fine for internet sharing and internal networking ( ssh and ftp ) between the laptop and the desktop, but there's a problem with both subnets being able to communicate with each other, and I haven't been able to solve it with DNAT either.
The wireless access point is 192.168.0.1 and has its own lan on 192.168.0.0/24 of which my laptop is 192.168.0.5. I setup the little subnet I created by routing with the laptop to 192.168.1.0/24 and my desktop is 192.168.1.50. With shorewall I can configure iptables to DNAT all of my ssh traffic destined to 192.168.0.5 to 192.168.1.50, but the problem seems to occur when ssh on my desktop fails to connect rather than the DNAT failing.
Using iptraf I've seen that all of the routing does work properly, because I can see on the connection in iptraf that only the SYN packet is being sent from a 192.168.0.x address, there is no ACK packet sent back. I believe this is because in the connection dialog it always shows a 192.168.0.x ip as the source of the connection, but I don't have a route to 192.168.0.0/24 from 192.168.1.0/24 setup and I'm unsure of how to do so.
I'm pretty much in over my head because I don't know what is wrong, I thought it should work like this. Everything else from port configurations, to the configurations of the software itself seems fine so I don't think it's anything like that preventing a connection, but I can't think of what it would be aside from the lack of routing between each subnet.
Is there anyway to just add a route so that 192.168.1.0/24 and 192.168.0.0/24 can communicate with each other directly? I know there should be, I'm just not at all sure how it would be done.
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May 5, 2011
I am new to linux and just set up my wired network, still a few kinks that needs to be sorted out. When setting up a wireless connection, what is needed for a basic p2p network. Wireless connection from one laptop to another to enable sharing? What I have done was set up a wireless network on my windows machine, connect to it using ubuntu. (this is all done with the built in wireless adapters, no routers). The connection is made, both the windows and ubuntu machines say connected, but none of the computers show up in the networks directory?
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Jul 22, 2011
I have TWO L3 + router switch (say switch1 and switch2). I created VLAN100 with VLAN ID 100 in both the switches. I created router 192.168.1.1/24 in Switch1. I created router 192.168.2.1/24 in Switch2. Switch1 is connected with 1.x/24 PCs. PCs are configured with 1.1 gateway. Switch2 is connected with 2.x/24 PCs. PCs are configured with 2.1 gateway. Both Switch1 and switch2 are connected by a trunk to carry VLAN100 data.
1)I have few PCs of 1.x connected to say Switch1 Is it possible for PC with IP 192.168.1.100(x) to ping PC with IP 192.168.2.100(y)?What are the configuration required in both switches to make them communicate ? All the device in both the subnets should ping/communicate with each other.
2)Move PC (192.168.1.100) to switch2. Move PC (192.168.2.100)to switch1.What will happen when PC(1.100) ping (2.100) and vice versa?What will happen when PC(say 1.80 in switch1) pings PC (say 1.100 in switch2) and vice versa? What will happen when PC(say 1.80 in switch1) pings PC (say 2.100 in switch1) and vice versa?
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Feb 14, 2010
I am basically from system side and often confused about the calculation of the IP addresses.Just i want to know that what how can i calculate the following of a IP Address:
(1) Available IP in a Network
(2) Broadcast IP
(3) Network Prefix or Net Mask
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Apr 5, 2010
I am using ubuntu Lucid and connected to a network with windows machines.Our network admin changed some settings in the network, and all machines need to change their subnet masks to access local machines (e.g. I am getting "unable to mount" message when I try to connect other Windows PC's on the network.)
If I open the connections panel, and "Edit" the "Auto eth0", I can get: IPv4 Settings -> Method -> Manual -> Addresses -> Add .And I am pretty sure I will put new subnet mask address into "Netmask" box, what to put others? Namely:
IP Address, Netmask, Gateway and below:
DNS Servers, Search Domains
I can get some info about my network connection by right clicking network icon on the panel, and select "Connection Information" Tried to fill manual settings with some of those info (the ones made some sense to me) but I still cannot mount windows network drives, plus my internet connection dies.So, is there any way to change Subnet Mask "ONLY", without touching any other setting.
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Jul 4, 2011
I installed Redhat Enterprise linux server5. it has two LAN card and two subnet connected to these two LAN card. i can browse network from these two network easily. But i created VLAN on one network card.Now i cant browse network from these VLAN subnet.
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Aug 6, 2010
I will try to explain a bit first about my network typology: I have one cent os 5.5 machine with 2 nics - external one 86.x.x.122 and internal one with 2 IPs: 192.168.1.1 and 89.x.x.121. The ideea is that I have a public subnet (86.x.x.120/29) of IPs which are routable only through 86.x.x.122 so I have a webserver hosted on a different machine with the IP of 89.x.x.122 and GW 89.x.x.121 - everything works perfectly fine, except that I cannot access from the internal network 192.168.1.0 / 24 the so called DMZ (roughly) - the 89.x.x.122.
What really makes me crazy is that I setup the IPtables rules correctly because I can access the webserver from the outside world but I cannot accessit from the internal network...
what I'm missing - why the 192.168.1.0/24 cannot see the 89.x.x.122 machine... What IPtables rules should I add?
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Jan 27, 2010
There seems to be a lot written about virtual networking but I am not sure what approach to take in my situation. My local subnet has a public block of 128 addresses. I have a virtual host running on my machine. My machine has a static address and I'd need to assign one to the guest. I have edited the guest's interface file and assigned a public address to it's eth0. However the guest cannot ping out and I can't ping in.
By default the virtual machine manager creates a virtual network (virbr0) and assigned a private address range to it. I have tried to create a new virtual network using a subnet of my public range (/31) but the manager says the range must to a minimum of 16 addresses (/4). It doesn't look possible to achieve my aims using the virtual machine manager.
In the past I have used the procedure laid out here:[URL].. which is to manually create a bridge. I am not sure that is relevant for my 9.10. I think I would have to disable the network manager if I were to do that and I am not sure how to do that.
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Dec 2, 2009
I am new to Ubuntu 9.10. I have installed Ubuntu and it's working fine. I would like to set fix IPAddress and Subnet.
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May 28, 2011
When I attempt to connect to a wireless network, the network manager asks me for the network's password, then says 'setting network address' for 20 or so seconds, then asks me for some random Hex or ASCII key in the same type of window I put the password in (Secrets for Noel -- KDE Daemon). Since a key is already typed into the window, I press OK, which then causes the network manager to go back to 'setting network address', then the window pops up again and keeps repeating itself.
I'm running Opensuse 11.4 with KDE, and my driver is ath9k. I don't know much about linux so please don't tell me to 'recompile this' or 'change this setting' without explaining how to do it. Please help, I've been unable to connect to wireless in OpenSUSE for 2 weeks now.
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Jan 25, 2011
On the 32-bit Netbook with Intel Atom running opensuse-11.3 I have ethernet broadband connection with dynamic IP.I have now bought a D-Link Wireless 150 Router DIR-600 and have initialized it on my other laptop on Windows 7 Home Basic OS. I now want this opemsuse Netbook also to have the facility. Please advise me what packages I shall install and what modifications I have to do in /etc/sysconfig/network/ifcfg-wlan0 or whatever else is necessary.
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Jan 25, 2010
I've just installed OpenSUSE 11.2 w/KDE interface on a HP Pavilion dv5-1010us laptop.Now we're trying to get the wireless to work. It's got a built-in wireless adapter, but we're not sure what kind of adapter it is. HP's Website is no help there. According to another site, it's an Intel WifiLink 5100. I did download the wireless driver from the HP site, but it's a .exe file. Anyone had any luck setting up this or a similar HP laptop. I couldn't find this model on the HCL/Laptops/HP - openSUSE page, but it seems OpenSUSE supports wireless other HP Pavilion models.
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Dec 20, 2010
im having a problem setting ad hoc wireless network between two opensuse boxes, using network manager, every time im about to smash the box, maybe im doing something wrong in the steps or something idk
how to set up ad hoc connectionl
note: im a linux rookie
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Dec 22, 2010
After had installed opensuse 11.3 I am about toset a usb stick and connecting to internet. I can connect with ethernet but as I want to have also wireless internet I bought a LEVELONE WUA-0605 wireless usb adapter witch I can't setup and connect...
The only data witch I was able to find are:
linux-0wi7:~ # hwinfo --wlan
21: USB 00.0: 0282 WLAN controller
[Created at usb.122]
Unique ID: 2UT6.NomXlQ88uo3
Parent ID: k4bc.9T1GDCLyFd9
SysFS ID: /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0
SysFS BusID: 1-3:1.0 .....
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Feb 13, 2011
having a very specific problem setting up the wireless card in my Dell Inspiron 1545. The card's description under lspci is this:
0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
I have the required drivers from this website: Broadcom.com - 802.11 Linux STA driver As far as I can tell I have followed all the instructions given by the readme, I have all kernel packages that I had understood to be required but when I try to make the Makefile I am given this:
borgs0@linux-yjl1:~/hybrid_wl> make
KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd`
make[1]: Entering directory `/lib/modules/2.6.34-12-desktop/build'
make[1]: *** No targets specified and no makefile found. Stop.
make[1]: Leaving directory `/lib/modules/2.6.34-12-desktop/build'
make: *** [all] Error 2
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Feb 16, 2010
I've been trying to understand how Linux creates the network/interfaces on a machine (been reading the Linux admin guide), but as I'm pretty new to this subject, I've got lost in the forest.
To provide with my goal:
1.) Learn about network setups on Linux
2.) Be able to maintain my own (virtual) network
3.) Configure my (virtual) network
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Feb 27, 2010
I have a machine running the 32-bit version of openSUSE 11.2 that can't seem to get outside the subnet (TCP/IP works properly inside the subnet). I've researched this problem, and I just can't seem to solve it.
The machine originally had 2 LAN cards in it. I failed to remove it before the install of openSUSE. One card was an old Network Everywhere, and the other was a 3Com 3c905c card. I decided to keep the 3com in, as I've good luck with this particular card when it comes to Linux. I've since removed the other, not only from the machine itself, but also from YaST ('Network Settings').
I can't see much in /var/logs. I've sifted through them several times. I don't see anything that really stands out. I've tried switching network control from ifup to network manager and back. That didn't seem to help. I've tried a static IP configuration and that doesn't seem to help either. I've also removed Avahi just to make sure my variables here are kept to a minimum (I don't use Avahi anyway, so it doesn't hurt).
The network is a 10.0.0.0/24 subnet with a default gateway of 10.0.0.1 (NAT). I have only 2 other PCs on this subnet - a Windows XP Pro machine, and a dual-booting laptop (XP / openSUSE 11.2). Both of them work fine. The gateway is a Linksys WRT54G router that I've flashed with DD-WRT (latest stable version). It handles DHCP for my small subnet. I have not made any changes to the network configuration / setup in a long, long time.
[Code]....
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Dec 26, 2010
I have been trying to get a DHCP PXE server up for a few days now, this is what I got so far..I am following this how-tohere are some outputs and what-nots, go to the last one to see the problem I am having.the host network
Code:
:~> /sbin/ifconfig
br0 Link encap:Ethernet HWaddr 00:19:DB:62:97:20
[code]....
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Mar 15, 2010
Step 1 : In Hyper-v Machine i have created two Virtual Ports.
Step 2 : Now for these two diff ports two ip address with different subnet mask(e.g 192.168.9.19 and 192.16.9.20)have been assigned(and have checked using ifconfig).
Step 3 : In Host machine i have added one subnetmask for one machine next one for another machine,however i m not able to ping both the ports from either of the machines having static ip 192.168.9.13 or having ip 192.16.9.107.
Step 4 : If i add same subnet mask for both machine it is pinging properly between 2 machines.
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Apr 18, 2011
I was trying to set up my computer as a wireless AP/router. I am using a D-Link wireless dongle for the wireless network. I have ensured it can be put in the master mode. I followed the instructions on [url] and steps seemed to have been completed without a problem.
However, the wireless signal is not being broadcasted. I cannot see it on my phone or my laptop. The only difference I see is that my Ubuntu installation is the desktop version instead of the server edition. However, I don't think that should be the issue!
The ip addr command produces
Quote:
I suspect this down state to be an issue but the command ip link set wlan1 up is not doing anything
Quote:
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Mar 14, 2011
I am trying to set up the wireless with the latest version of Ubuntu. I can connect to the internet with the ethernet but wireless connections do not even show up. My wireless card is a Intel WiFi Link 1000 BGN and perhaps that is the problem. I am not sure if that will work. I am also using VMware and perhaps it just doesn't work with VMware.
When I type in iwlist scan it just comes up with: lo interface does not support scanning and eth0 interface does not support scanning. When I search for available drivers it says no proprietary drivers are in use on this system. Then it has VMware virtual ethernet driver and VMware virtual machine communication interface.
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Aug 27, 2009
I was having a discussion with someone who said that telnet, FTP, HTTP plain-text authentication in the local subnet is ok because it's a switched network. Also, that these protocols are not good over the net but in a local subnet they are just fine.
I know that someone can plug a hub in the network port and connect 2 (or more) PCs and see the packets. Also, heard about ettercap but haven't really delved into it. I know dsniff was written to prove the point that unencrypted protocols are bad. Would like to get opinion about unencrypted protocols over a switched networks.
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Jan 28, 2010
I just got a new printer (photosmart premium) and I have tried to set it up in the printing config but the listed printers do not include mine..do I have any other options?
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Aug 1, 2010
I just installed Ubuntu 10.04 and am very excited about using it for the first time. I am very new to computers and stuff though so I don't have much of a clue as to what I'm doing. Although it installed fine, for my wireless connection it says "device not ready". What does this mean and how do I connect to the internet?
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Oct 18, 2010
I have spent the last 24 hours trying to work a wireless bridge (a D-Link DAP-1522) into my network configuration. It would connect to our gateway here at home (some 2WIRE piece of garbage AT&T hands out, but I digress), and two computers (an Ubuntu Desktop and an Ubuntu Server) would connect via the bridge.
The bridge SEEMS to connect to the router, and indeed, the Ubuntu Desktop PC is able to access the internet. The server, however, is not, and neither computer can communicate with the other (ping, SSH, etc.) furthermore, the router recognizes the presence of these two computers on some level, but does not seem to know their IP addresses (I assume this is related to the computers' inability to communicate).
Before I get too far into this, here are a few links/items for the sake of clarity. The first is a shoddy diagram of my (proposed) network topology, for all of you out there who, like myself, understand things visually:[url]
This is the output from running "ifconfig eth0" on the Ubuntu Desktop PC, which sits behind the bridge. The PC is connected, and can ping hosts across the Internet, but can only ping the router locally (that is, it can't ping any other device in the house, on either side of the bridge):
Code:
The router uses wireless encryption, not MAC addresses, to restrict access/traffic, and all wireless devices (including the bridge) have been provided with the proper credentials. There shouldn't be any devices being denied access on account of their MAC address. In fact, the router's control panel lists the PC and the Server among the recognized devices (even lists their MAC addresses), but provides no IP address and always considers the two computers to be "offline." And yet, I am writing this very post from the Ubuntu PC. Sigh.
I am very comfortable with computers, and reasonably comfortable with Ubuntu/Linux and the Linux command line -- I've been using the operating system for just over a year now -- but networking issues have always been perched right on the edge of my understanding. In short, it's likely this issue has more to do with me than it does with the hardware itself (although the more forums I browse, the more I start to doubt this bridge...).
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Jan 1, 2011
I installed 10.10, I'm using a HP tower with a cisco usb ae1000 modem. I have been on Linux all of 12 hours. I had installed on a old laptop, and hard wired to the router. I really liked the OS. And Long short I killed the laptop, literally.
So I partitioned the family tower, but I cannot connect wirelessly. And to run hard wire to the router would mean a complete tear down of my desk and set up in the living room area, and that will not help out the marriage long/short term.
on the internet connection and I gone through the panels trying to set up the connection but no luck. I'm running Vista and Ubuntu 10.10. I using vista to post here now.
How do I get it to find the wireless router and set up my connection without being hardwire to the router itself.
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Sep 19, 2010
I'm trying to follow the instructions here to get my dell wireless NIC working in CentOS. I've got to step 3 but when I run the make command.But it does exist, as a link pointing to ../../../usr/src/kernels/2.6.18-194.el5-i686.
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Sep 27, 2010
I was able to build a NFS server and a NFS client using OpenSuse 11.3 and connect them together using gigabit ethernet through a switch. These are the only 2 devices on this net (192.168.1.xx). I tried to set the MTU to 9000 and 9014 but learned that the Realtek 8169/8111 only support up to about 7200 MTU. So I inserted Intel NIC cards on both and set both to 9000. The system accepts this and I can ssh from one machine to the other. Both NFS client and server start w/o issue and the client mounts the device just fine. But when I try to copy a file on the NFS client from the local disk to the server, the client just hangs and I have to physically turn the machine off in order to get it to work. Both systems are using the stock software from the DVD (I didn't update either).
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Jul 26, 2009
how to set up wireless networks. The technical language is foreign to me. My notebook maybe described as follows:
Make and Model: SONY VAIO FW490
Processor: Intel� Core™ 2 Duo Processor P8700 (2.53GHz)
RAM: 4GB DDR2-SDRAM
Graphics card: ATI Mobility Radeon™ HD4650 graphics card with 512MB vRAM.
[code]....
It came pre-installed with Windows Vista Home Premium but now I have Fedora 11 (w/ Gnome) as the only OS. The router that I am using with an Ethernet cable connected to my laptop is a Netgear 54Mbps Wireless Router WGR614 v7 connected to a Motorola Surfboard Cable Modem. Both worked right out of the box and now I have wired Internet access. RCN is my ISP. I would like to avoid using the Ethernet cable connecting my laptop to the router.
This is what I have done so far:
1. Gone to System>Administration>Network
2. Clicked "New" then chose "Wireless connection" from the list
3. Chose Intel Corp. Wireless WiFi Link 5100 (wlan0) from list. The other option was "Other Wireless Card".
I don't know what to do after this. What should I choose in the windows entitled "Configure Wireless Connection" and "Configure Network Settings" ? I chose Ad-Hoc for mode and entered an SSID name even though I have no explanation for taking these actions. As for the other settings, I simply went with whatever was already selected. At the moment, I lose Internet access when I disconnect the Ethernet cable. I see other wireless networks when I click the network icon on the top right corner of the screen. I don't know how to make my router appear on that list if that's necessary.
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Jan 13, 2010
I have a Sonicwall access point, which I am able to set up through the interface, but after that I am unable to achieve a connection through my wireless card. I have a good understanding of everything involved, but really have no hands on experience when it comes to networking.
Code:
lspci
00:00.0 Host bridge: Silicon Integrated Systems [SiS] 735 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP)
[code]....
Also, I should have mentioned that @ the interface for the Sonicwall it said that "no DNS server had been specified", but I set it up for DHCP, and I thought my ISP is using PPPoE (which I also thought used DHCP).
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