Networking :: Subnetwork , Network And Broadcast Address / Difference Between Them?
Mar 31, 2009I dont know the difference between these topics.
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Ubuntu Networking :: What Is The Use Broadcast Address
Feb 28, 2011all I get is the broadcast address can be used to send packets of information to all computers on a network simultaneously. Can that be used during MPI programming or anything of the such? What is the day to day use of the broadcast address?
View 3 Replies View RelatedUbuntu Networking :: How To Calculate Broadcast Address
Dec 13, 2010How do I calculate broadcast adrress if the address space is 192.168.36.16/28 then what would be broadcast address.
View 7 Replies View RelatedUbuntu Networking :: Calculate Broadcast & Network?
Jul 13, 2010i m setting up a linux server and i have to setup ip , in static mode. so i know everything except those two things. how do i calculate them?
example ip:200.49.142.91
submask 255.255.255.248
gateway 200.49.142.89
Networking :: Subnet - Network IP - Broadcast IP Calculation
Feb 14, 2010I 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
CentOS 5 Networking :: Add A Dhcp Subnetwork?
Apr 7, 2010I have an existing home network with fixed ip's. I'd like to connect a "dish network" HDTV box into the network but it can't use fixed ip's. So is it possible to use one of my computers and setup a DHCP subnetwork?
View 19 Replies View RelatedFedora Networking :: SSID Broadcast Disabled - Cannot Connect To Wireless Network
May 6, 2010I have just installed FC12 on my machine - and gone Windows free for the first time ever. Now I do use various flavours of Linux on a daily basis but not from an installation/sys admin point of view so my questions here may seem a little basic but pleas eindulge me if you will!
Now, my network connection works perfectly well under the following scenarios.
1) FC12, wired to router
2) FC12, wireless, SSID broadcast enabled
3) Ubuntu (laptop), wireless, SSID broadcast DISABLED
The only scenario that does not work is FC12, wireless with SSID broadcast disabled.
I can only assume that it is an issue with my USB modem (a linksys WUSB54GS) since the same set-up works fine from my laptop running Ubuntu with an internal wireless card.
Now, I know from reading the forums that it's pretty easy to get around a disabled SSID broadcast but this is an itch I just have to scratch....what the hell is causing this problem?
nm-tool ouput is as follows:
I have tried using wpa_supplicant but I am not sure which driver I am using here - is it ndiswrapper per chance?
(Driver: rndis_wlan)
How I can connect once again to my wireless router with SSID broadcast turned off.
Ubuntu Networking :: Static IP Address And The Install Configures For A DHCP Configured Address - Network Not Starting
Dec 16, 2010Version 10.04 LTS. Installed desktop version and network worked but I needed a static IP address and the install configures for a DHCP configured address. I tried changing to static address using the System->Preferences->Network Connections application but was unable to get the system to come up with the network up.
So I manually modified the /etc/network/interfaces and the /etc/resolv.conf files. I restart the system but when I do an ifconfig, I don't see a configured IP address on eth0 (only the loopback address). If I run /sbin/ifup eth0 everything then works fine and ifconfig shows the correct address bound to eth0.
My files are as follows:
OpenSUSE Network :: Hostname Not Saved In Router Table / Broadcast It To Entire Network?
Jun 13, 2010I setup the hostname for my linux machine to Linux. If I try ping Linux from the same computer it works. If I try from another computer inside my network the host can not be resolved. If I ping the IP from another computer it works.
I take a look in my router at DHCP client list and my linux machine doesn't have the Hostname set up.
How to broadcast the hostname to the entire network?
Server :: Begin Online TV Broadcast - Can't Directly Broadcast From Country
Apr 1, 2010Friends i have an idea to broadcast few local TV channels to the world via internet.But friends i can't directly broadcast from my country because of bandwidth.friends is there a way to do this through a remote server server? i just need to input my stream to a remote server and then broadcast it from the server.I can stream channels to the server from my country through a 10mbbs connection.
View 2 Replies View RelatedGeneral :: Find Network / Broadcast Pairs?
Dec 5, 2009Given a subnet mask of 255.255.255.192 and the first network address of 64.5.96.0, what are all of the network/broadcast pairs?
View 1 Replies View RelatedNetworking :: How To Get Network Ip Address
Dec 11, 2009I use getaddrinfo to get the ip address of the server, it works well on other 3 machines, but always get local address 127.0.0.1 on an 64 bit linux machine. Therefore, other remote clients can not connect to the socket server because the server binds local address l27.0.0.1.
I have also tried pass 0.0.0.0 to getaddrinfo, now the server bind on 0.0.0.0(all available interface). But now I can not print the correct network address of the server, as it is always 0.0.0.0 which is provided by getsockname.
I do not know how to get the network address of the server, rather than the local address.
Software :: Simulate A Wireless Network Where All Nodes Broadcast Packets?
Apr 7, 2011I want to simulate a wireless network where all nodes broadcast packets
View 3 Replies View RelatedNetworking :: Add Route To 1 IP Address Through Second Network Card
Sep 8, 2010I have a server with 2 network cards. eth0 is used for all traffic and everything is working fine on this side. Eth1 is used for traffic to and from 1 ip address.
Lets say the ip address of eth1 is 123.123.123.10 and its gateway is 123.123.123.1. I need to pass all traffic to 123.123.123.20 through eth1. What command would i use?
Networking :: Connect To Network With Static IP Address?
May 19, 2009I am running 2.6.27.21:170.256.fc10.i686 on my laptop.
I am trying to connect to a network at a university in China right now and I cannot figure out how to connect.
IP: 192.168.213.179
subnet mask: 255.255.255.0
default gateway: 192.168.213.1
DNS: 202.202.96.33
DNS: 61.128.128.74
Ubuntu Networking :: Cannot Obtain IP Address On Wireless Network?
Feb 19, 2010I believe I have the wireless card installed properly and wicd sees the router. When I try to connect I get an error "can not obtain IP address" Output from iwcongif and lspci is.
dillan@dillan-desktop:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
[code]....
Ubuntu Networking :: Cannot Obtain Ip Address With A Particular Wireless Network?
Mar 5, 2010I'm using Ubuntu 9.10 and I recently changed certain settings of my router. After that ubuntu isnt able to obtain IP address from this wifi network. I've tried to connect with win 7 and OS X and both of the OSes are able to connect to the same wifi network. I tried to connect ubuntu to another wifi network at school and it connected successfully.
View 7 Replies View RelatedUbuntu Networking :: List Ip And Mac Address Of Users On A Network?
Jun 15, 2010I want to find out ip addresses and also mac addressed of users connected to the same wifi router as me! how can I do that?
View 5 Replies View RelatedUbuntu Networking :: /etc/network/interface Address Not Recognized
Jun 18, 2010Showing my ignorance, but why would this work
address 172.16.1.8
netmask 255.255.254.0
network 172.16.1.0
broadcast 172.16.2.255
[Code]....
Notice the 2 in address. Seems to me it doesn't like the network and wants it to be 172.16.0.0, but I am adding to a network already configured this way.
Ubuntu Networking :: Changed IP Address Now Cant See Windows Network
May 21, 2011I'm not sure this has anything to do with Samba because I can see and access the ubuntu share files that I share with windows still. I can't see the windows network share files though. If I switch back to my private IP the windows network comes back. How I can get the network to show on my public ip.
View 2 Replies View RelatedUbuntu Networking :: Block Mac Address In Adhoc Network?
Sep 1, 2011I want to block the Mac address in adhoc network to check the behaviour of the aodv protocol.Is there any other utility available for this purpose rather than Mackill..?
View 1 Replies View RelatedNetworking :: Virtual Network Adapter With Multiple Mac Address
Nov 10, 2010Is it possible to create virtual network adapter on the same physical network adapter? or How to give or have multiple MAC Address to the same adpater? I m working on centos 5.3.
View 6 Replies View RelatedNetworking :: Finding Mac Address Of A Machine On Local Network?
Dec 18, 2010i want to know mac address of a particular ip but the problem is that i am unable to ping that ip but that ip is being used by someone in my local network that i know from my proxy logs. i want to know the mac address of that ip,
View 5 Replies View RelatedNetworking :: Find The IP Address Of Connected Network Drive?
Mar 31, 2011I desire to access a WD Netcenter network drive from Ubuntu 10.10 using NFS mounts.Several on line helps show how if you know the IP address of the drive. How can I discover the IP address of the drive. My Windows network is using DHCP, though I understand that the drive uses a static address. I know the MAC address of the drive. As a user (but not an administrator), I have much Unix experience.
View 3 Replies View RelatedNetworking :: Individually Address Hosts In Private Network From The Outside
May 24, 2011The facts are as follows:
1. I have at work a regular LAN with many PCs, each with a DNS-registered public IP. Therefore I am able to address each of these PCs by their fully-qualified names and, for instance, initiate ssh sessions to any of these computers just by typing "ssh <name_of_machine>" from a terminal.
2. Within the aforementioned LAN I have just created a private network with some clients, which access the LAN through a router (a D-link DIR-825). We have created this private network for many reasons, but most importantly because we need to guarantee that the hosts in this network will remain networked among them even if the LAN goes down for any reason (which unfortunately happens often). But we still need to have access to the hosts in the private network from the LAN.
3. I am able to define port forwarding rules in the router in order to access certain services on the private network's clients. For example. I am able to access (by ssh) hosts "H1" and "H2" on the private network from a client on the LAN by defining rules for forwarding ports "P1" and "P2" on the router's public IP to TCP port 22 on the private IPs of "H1" and "H2", respectively. Then I would access each of these hosts from the LAN by using:
>ssh -p P1 [ip.address.of.router] (for accessing H1) and >ssh -p P2 [ip.address.of.router] (for accessing H2)
4. The problem with the port forwarding approach is that it is not easily scalable. For instance, If I wanted to enable ssh access to each host in the private network, I would have to define a port forwarding rule for each machine, and then REMEMBER all these port rules when initiating a ssh session from the LAN in order to point to the right host. And the problem gets worse when considering more services in addition to ssh.
5. The ideal solution would be to be have a means for addressing each host in the private network individually, in much the same way in which I address the hosts in the LAN (which have DNS-registered names). For instance, in order to access hosts H1 and H2 as in the previous example, i would like to be able to just type
>ssh [name_of_host_H1] (for accessing H1) and >ssh [name_of_host_H2] (for accessing H2)
The bottom line:
I guess I can say that what I need is some kind of combined DNS-ing and routing that allows me to communicate with the hosts in the private network from outside of it in a transparent way.
The question is: what are any possible solutions for accomplishing this? I have searched the web and found stuff about things like VPNs, reverse-proxies and NAT servers, but I really can't understand if any of these could serve to solve my problem (BTW, isn't my router doing some sort of NAT-ing already? could I just add some DNS-ing in some way?)
Ubuntu :: Login Into A Machine On A Separate Subnetwork?
Aug 30, 2010I have set up a dhcp server through a usb ethernet adapter to give IPs to a cluster starting at 10.0.0.10, however I am connected to eth0 as 192.168.2.215. I can see the dhcp lease given to the machines, starting at 10.0.0.10. How do I ssh into a machine on a different subnetwork? The IP of the machine I want to login to is 10.0.0.10.
View 2 Replies View RelatedFedora Networking :: No IP Address From DHCP Server On Wireless Network?
Feb 12, 2009I have installed Fedora 10 on my A860 Dell Vostrol Laptop with AR242X Atheros Wireless card. Wireless card worked out of the box and i could detect wireless network and connect to it. But i have a problem that, my wireless connection is not able to get IP address from the DHCP server. Please help me out what can i do to get this working. I am using WEP security and authentication is open system.
I have windows 7 beta installed on the same machine and on that wireless network works fine so i am sure that there is no problem with the wirless network. I am using DIR-300 router from D-LINK. I tried to see packet log on wireshark and there i see that there is no reply to the DHCP discover message. Actually i don't see any RX packets at all. Which is not normal as there is traffic on the network.
Fedora Networking :: Recover Eeprom Network Interface MAC Address?
Mar 9, 2009Someone just erased my HWADDR line from /etc/sysconfig/network-scripts/ifcfg-eth0. How can I obtain my original MAC address?
Code:
ifconfig eth0 does not work (it shows the wrong MAC address) since the HWADDR line from the file I mentioned above was erased. Also there is no ifcfg-eth0.bak backup configuration file.
Ubuntu Networking :: Cannot Obtain IP Address From Wireless Network / Enable This?
Jan 17, 2010I'm using Ubuntu 9.10 and for a while I had no problems connecting to the internet through the wireless network. But recently, my wireless connection started disconnecting regularly. Following an advice I found online, I installed linux-backports-modules-karmic, but after a reboot the wireless device stopped working altogether - it had lost its driver. Since then I managed to associate the device with Broadcom's STA driver, which I had been using before. But now, the wireless device cannot connect to the internet anymore. The network manager's output to /var/log/syslog indicates that the device cannot obtain an IP address. When I run code...
View 4 Replies View RelatedUbuntu Networking :: Authentication - Wirelessly Connect To My Network - Cannot Get Address
May 27, 2011I have been trying to wirelessly connect to my network for weeks now. My netgear dongle is fully working. I have installed the driver using ndiswrapper. I can see my network and signal is excellent; everything is working perfectly. When I try to connect it thinks about it but never connects. The password is fine; it works great with other computers. decided to have a go with wicd, so got rid of the Gnome network manager and installed wicd. Adaptor and wicd appear to be working brilliantly EXCEPT I cannot connect. wicd tells me its a bad password. Password fine because it works brilliantly with every other device I connect to my network. If I remove security from network, it tells me it cannot get address, even though it sailed passed that with no problem when there was security. I have searched the internet for a solution to this problem time and time again. Lots of people seem to be having this problem, but no one knows the solution. Is there a solution? It happens with both Ubuntu 10.04 LTS v1 v2 and Ubuntu 11.04. What the heck is going on. This happens with WPA WEP and anything else I try to use
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