Ubuntu Networking :: Unable To Communicate Two Computer With Each Other?
Jul 18, 2010
I have two computers...Ubuntu server and Windows XP client. Both are connected to the internet using Ethernet. I have them connected directly using 1394 to increase speed of large transfers. The internet network and 1394 have different IP address scemes. Internet 192.168... 1394 10.0.0...
I am having problems getting the two computers to communicate with each other. I can ping the server's ip address and and it loops back. Same with the XP's IP address. I can't ping each other.
ifconfig shows my eth0 and eth1 connections are up. The eth1 Link Encap says UNSPEC.(Don't know if that means anything.)
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Jul 14, 2010
One problem has led to another.. I had notebook version 9.10 and it worked OK. I Downloaded 10.04 onto USB and all seemed fine. After upgrade - disaster. I have as Asus Eee PC901.
1. I am in Italy and bought a TIM USB mobile broadband modem - Ubuntu can see the device but nothing happens except a bizzare message with no information at all 'Unable to Open Archive'. I have no idea what that meant nor what I should do to resolve whatever it is, so I went back to my older USB modem which worked under 9.10 - Now even that device does nothing.
2. as a result, Ubuntu software centre does not work, Synaptic Package manager is the same; also update manager.
3. Limited communications are available via the university wireless network. That network requires me to work through their own proxy;port address (with username and password) which I have set up using proxy manager including the username and password. This allows me to carry out web surfing and point to point downloads.
4. Firefox works fine, and it obeys the requirements for registering with the proxy. Thunderbird, evolution, Synaptic, Update manager, Software centre etc all fail because they failed to authenticate with the proxy. They all have been set up to use system proxy. (Also tried direct proxy address;port in each package but no go)
5. The ultimate frustration has come from the direct download of Skype (.deb). Double click and it starts to install then crashes because of numerous dependencies (things like libqtgui4).
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Apr 16, 2011
I am having trouble connecting to my Garmin GPS unit, an eTrex Venture HC. I gather from all the resources I've checked that it my system is finding the GPS just fine, but I am unable to communicate with the device. Using gpsbabel, I get the following error:
I noticed that the gpsd service was disabled, so I enabled it, but that didn't seem to change anything.
(using Fedora 14)
lsusb:
dmesg:
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Dec 15, 2010
This issue was prompted by Groupwise MTA not communicating with a Post Office that I had migrated to our first Linux box. I found out why, because I cannot communicate with it at all, other than through ethernet. I'm not sure what the problem is. I've checked the firewall and opened up all the ports that I'm trying to communicate on.ve made sure Apache is loaded
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Jul 27, 2014
I have a problem with my WiFi HP LaserJet P1102w printer. I can add the printer, but whenever I try to print anything, say, HP testpage, I get the following errors:
Code: Select allerror: Unable to communicate with device (code=12): hp:/net/HP_LaserJet_Professional_P_1102w?ip=192.168.1.6
error: Unable to print to printer. Please check device and try again.
error: Unable to communicate with printer HP_LaserJet_Professional_P_1102w. Please check the printer and try again.
I'm using current testing repos and the system is updated.
The printer is detected and installed via hp-setup, it just doesn't print.
This setup used to work, but I haven't printed anything in a while so can't be sure what caused it to stop working: updates, recent power outage or something else.
Printer is using a static IP address.
What works:
Printing over USB works.
Printing over WiFi from a different, Windows, PC works.
Pinging the printer (connected over a WiFi router) works. Also, opening the printer admin page works.
What I've tried:
Restarting everything.
Purging all hplip packages and reinstalling.
Installation log: [URL] ....
hp-check: [URL] .....
I'm stuck.
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Dec 5, 2010
Chili555 where are you?
I am running Ubuntu Release 10.04 (lucid), Kernel Linux 2.6.32-26-generic-pae, GNOME 2.30.2.
I have installed the ASUS USB-N13 according to your advice in previous posts, specifically, in your advice to 828688 Ben.
The dongle seems to be operating as it should. The LED does its flashing at what appears to be the correct time. Wicd also looks correct. Networks are found with good signals shown. Everything looks correct. But when I attempt to connect, "validating authentication" runs for quite some time, and eventually results in a dialogue window stating the communication failed. The required WEP password is entered in the RT2870STA.dat file, and again in the wicd window.
I have entered as much detail in the RT2870STA.dat file as I dare, and believe it to be correct.
ndiswrapper is not installed. Network Manager is uninstalled. Only wicd remains.
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Nov 19, 2010
How can I get two ip addresses to communicate with each other which are not in the same 255 range?
Like:
192.168.0.1
and
192.168.1.1
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Dec 3, 2010
I'm using Fedora 9 and has finished the DHCP for my eth2 and static on eth0. I would like to add a route so that the 192.168.22.x eth0 and 192.168.26.x eth2 can communicate to each others,.
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Dec 18, 2010
I am testing with Suse Linux Enterprise Server 10 in a VMWare environment. I've installed two SLES10 servers, named sles1 and sles2. I can't get the two servers to communicate, even a simple ping won't work. The "Network Adapter" in VMWare is set to "bridged", a setting which has worked fine when installing WinXP in VMWare and connecting to the Internet.Even if I ping sles1 from sles1 (= "pinging myself"), I get the same error message.Only if I ping localhost, I get a proper ping result.What did I do wrong? Did I forget to configure something?
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Aug 27, 2010
given my computer is in a network consisting of multiple subnetworks, i.e. there are groups of computers: {192.168.1.1, 192.168.1.2, 192.168.1.3 etc.}, {192.168.2.1, 192.168.2.2, 192.168.2.3 etc.},..., {192.168.254.1, 192.168.254.2, 192.168.254.3 etc.}. My computer is 192.168.1.1. So I can communicate with 192.168.1.2, 192.168.1.3 etc. To communicate with other people I have manually switch to the proper subnetwork and take a new ip, e.g. 192.168.2.1. My question is: Is there any way to be member of all groups and communicate simultaneously with ALL computers? And if not, is there a way to find out (without manually changing the ip address) if computers of other subnetworks are online, so one does not have to change the ip and then look for other computers in the new subnetwork?
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Oct 20, 2009
I downloaded and installed a new copy of Fedora 11 last week onto a new computer (hereafter "proximate"). I also have a remote computer without a monitor running an outdated version of Red Hat Linux (hereafter "remote"). To manage the processes on remote graphically, I ssh from proximate into remote; this connection succeeds without incident in transmitting text (including commands) between the two computers; however, the command "gnome-session" returns: (gnome-session:15789): Gtk-WARNING **: cannot open display:
(The numbers apparently represent the process identifier and vary from instance to instance.) A similar warning (and no accompanying graphics) occurs whenever I attempt to start any graphical user interface from remote via ssh from proximate. The issue almost certainly lies with proximate; remote successfully communicated graphics to the ancient box that proximate replaces.
Interestingly, I cannot communicate via ssh from remote to proximate (within a secure shell from proximate to remote). If I execute /usr/sbin/sshd on proximate as root, then I can login, but even then I cannot execute any commands.
Consider the following output:
If I execute ssh -vvv proximate from remote to proximate, then I get a lengthy output that ultimately ends with "debug1: Exit status 254."
What must I do to communicate both text and graphics among my computers?
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Apr 6, 2010
I am trying to set up an NIS client on a Fedora Core 12 64-bit system. The ypbind daemon is running via the /etc/init.d/ypbind script. However, whenever I run the ypwhich command, the following error message appears on-screen:
[code]...
The client has been configured so the domain is set, and the client will broadcast for the first available nis server. The client is on a subnet where there is one nis slave server, so it should bind to that server. One thought that came to mind was the fact the client in question is 64-bit, while the nis slave is 32-bit. Could that cause this problem?
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Dec 18, 2010
I am testing with Suse Linux Enterprise Server 10 in a VMWare environment. I've installed two SLES10 servers, named sles1 and sles2. I can't get the two servers to communicate, even a simple ping won't work. The "Network Adapter" in VMWare is set to "bridged", a setting which has worked fine when installing WinXP in VMWare and connecting to the Internet. I have configured the Network Settings as follows:
SLES1:
-Statically assigned IP Address
-IP-address: 192.168.0.20
-Subnet: 255.255.255.0 (/24)
-Hostname: sles1
Hostname/DNS tab:
-Hostname: sles1
-Domain Name: local
-Name server: blank
Routing tab:
-Default Gateway: 192.168.0.1 (= my router connected to the Internet)
SLES2: same as sles1, with IP 192.168.0.22 and Hostname sles2
With these network settings, the two servers seem totally unable to communciate.
-When I ping sles2 from sles1, I always get the error message: connect: Network is unreachable
-Whatever way I ping, either ping sles2, ping sles2.local, ping 192.168.0.22, whatever, the error message is always the same.
-Even if I ping sles1 from sles1 (= "pinging myself"), I get the same error message.
-Only if I ping localhost, I get a proper ping result.
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Jul 27, 2010
I recently setup motion on one of my computers with a USB camera. On that computer if I type [URL] I can see my live video. If however I type [URL] on that computer or any other on my wireless network, I get a page cannot be displayed. I checked that UFW was disabled and I am able to ping the motion computer from any other computer on my network. Also I am not sure if it matters but I do have apache installed on my motion computer as well. why I cant view my live video from different computers I am using Ubuntu 10.4 on all computers
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Jul 1, 2009
I have a server in my house with webmin and virtualmin installed et i made a mistake.Ive created a virual server and ive change the lan ip adresse. 192.168.2.30 ive change it for 192.168.2.31.Now of course nothing work. Im not able to connect via ssh via another computer.So, on the server i write ifconfig and it tell me the adresse is 127.0.0.1 and no more adresse like 192.168.x.x.
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Apr 4, 2011
just switched from Windows Vista to Ubuntu 10.10 on my Toshiba laptop and I'm loving it, except for some wireless connection problems. About 70% of the time, my computer is unable to find any wireless signals whatsoever, despite being right next to the router. When it does find the signal it connects fine and runs great, but most of the time it doesn't show any signals at all. I can't find any pattern to when it does or doesn't find the signal. My result for the "sudo lshw -C network"
[code]...
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Mar 25, 2010
I like to telnet from windows but unable to connect to the remote computer..
from windows i can ping the system its working
telnet service is on
from only i mentioned the windows IP...
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Sep 3, 2009
I just moved into a new apartment and now connect via DHCP. Everything seems fine network-wise, except that when I'm at work I can't connect to the home box. (CentOS 5.3 x86_64) One thing I noticed is that I can't really determine my "true" IP address. What I mean is that it looks like my IP is 192.168.0.190, but when I use linuxdcpp, and enter a hub, I'm told my IP addr is actually something like 71.192.163.206. Here's some info:
[root@localhost cwatson]$ cat /var/lib/dhclient/dhclient-eth0.leases
option dhcp-server-identifier 192.168.0.1;
option domain-name-servers 192.168.0.1;
option broadcast-address 192.168.0.255;
[Code]...
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Aug 2, 2010
I am a newbie to linux of 4 weeks. I set up my first web server and it works flawlessly - when accessed from external network or from other computers on my lan. However, I cannot access it from the computer where the server is run on. I have found numerous people with similar problems but the flavour I am experiencing is somewhat different and no solutions I have found apply to it.I have two network interfaces on my server, eth0 (public static IP connected to internet) and eth1 connected to LAN 192.168.1.0/24 range. The server is 192.168.1.1
I added "192.168.1.1 www.server.com" to the /etc/hosts on the server and also on the other machines on the LAN. All the other machines can open website without any problem.
HOwever, the server itself only opens website if the address is localhost. Internal IP, i.e. 192.168.1.1. gets a time out and so does www.server.com.I do not understand why the record in etc/hosts doesn't point it in the right direction. It seems that when I open address 192.168.1.1 it still gets routed to the external network. I have seen using DNAT to deal with the problem but it didn't work in my case (maybe I didn't do it correctly). I have spent whole evening/night trying to sort it out, it's 4AM now, going to bed frustrated and angry (at myself hahaha). Still like linux very much, won't be going to windows anymore. Please help
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Jan 31, 2010
I have recently installed Fedora 12 on my pc but I am not able to browse the internet although the network icon shows the computer is connected.
I tried the dig command and got the following message:global options +cmd; connection timed out; servers could not be reached;
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Jul 14, 2011
My necat (nc) doesn't listen! It means when I write "nc -l 3333", I can't communicate data with "nc 127.0.0.1 3333" in another terminal! Also after writing "nc -l 333", I don't see port 333 between the ports which are listening, by "netstat -ln | grep 3333".
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Jul 2, 2011
I have been trying to set up a network bridge for the 2 virtual machines installed on my Fedora 14 host PC. I want the VM's to be able to ping each other and have their own "network" in which they can operate/communicate. What is the simplest way to accomplish this? Most of what I have read revolves around turning off NetworkManager, and the following config files:
[code]...
Once these files are configured and the network is restarted, the bridge should work. Is this true? I have been encountering problems with this process, specifically when I try to link a VM to a bridge.
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Dec 31, 2010
I managed to configure my W890i phone to get access to internet through an ubuntu-based computer. It's very easy to use the phone to give internet access to the computer, but the opposite is quite more tricky. For that I've done the following
----On the phone---
-Set the USB network option to "through computer", so that the phone uses the computer's internet connection and not the opposite.
-Decide and set "Shared Network" parameters: user, pasword and workgroup.
-In "conectivity-> internet connection" set "allow local network" to "yes"
----On Ubuntu 10.04---
-Install samba, samba-client, smbfs, smbclient, firestarter and dhcp3-server
-Configure Samba (System-> Administration-> Shared folders): same workgroup as in the phone, add new user (the phone), passwd this new user. In my case the user was called "w890i" and the password given was the same.
-Once the phone is connected to the computer through USB (then select "phone mode"), a new connection appears in NetworkManager: usb0.The aim is to create a shared network that gives internet access to this device. Edit the IPv4 parameters of this new connection, set them to Manual and give an IP adress (192.168.0.1) and a subnet mask (255.255.255.0); the rest of the fields are left empty.Connect this network.
-Set firestarter to use dhcp3: sudo ln -sf /etc/init.d/dhcp3-server /etc/init.d/dhcpd
-Launch firestarter and follow the wizard. Set "allow internet shared connection", choose the device for the primary internet access, and then the device for the shared network (usb0). Then change the settings for firestarter: activate DHCP for local network, set IP to the one we gave before (192.168.0.1).
-Open dhcp3-server config file sudo gedit /etc/default/dhcp3-server And set INTERFACES="usb0"
-Set the policies of firestarter: in incoming connections, allow connections from the IP adress given to the phone (192.168.0.1). Then add rules for the ports that need to be open for this connection. I opened HTTP, HTTPS, SMB, SMTP, POP3, IMAP, IMAPS, DHCP for all the connections in the local network.
-Apply policies and start the firewall.
------------
After all this, the phone can access the internet through the computer. Two problems appeared:
1. I couldn't get access to https sites, like webmails. The phone gave a "communication error". But then I tried with Opera instead of the browser built in the phone's firmware, and I could finally get to https sites.
2. I couldn't retrieve mail, neither POP nor IMAP nor IMAPS. I thought it was a firmware problem again, and I tried out several mobile phone email clients written in java, but none of them worked.
So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection
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Aug 18, 2010
I set up a dhcp server in the lan and assigned static ips to two computers, computer A and B, according to their mac address. Everything was running fine. But when I turned off computer A, connected computer C to the network, and assigned computer A's static ip to computer C without changing dhcp setting. Computer C was able to access the internet. When I turned on computer A, dhcp couldn't assign an ip address to it, and computer C showed an error message of ip conflict and failed to use internet. I wonder if dhcp server is able to prevent other computer from using the same static ip that is already assigned to a computer according to its mac address.
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Nov 11, 2010
My wifes networked computer connected to the network just fine when it was Win XP. Now that Ive converted it to 10.04 (completely) it can see the network, but it just wont connect to it. I had no problem converting my computer to Ubuntu and it sees the network and accesses it great. Files, folders and hard drives are all shared. So, one computer connects great, the other does not.**I dont know what to do at this point.Here is the layout:My Comp (10.04) ---------......Main Network Comp (XP)Wife Comp (10.04) -------/The main network computer is XP as it has software on it we need that does not work in Wine. The main computer will have to stay XP. I cannot get my wifes computer to connect to the main system, although mine connects just fine. I dont know what the problem is. Her computer sees the network, but when trying to connect, it times out and says unable to connect.
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Sep 10, 2010
I have two Linux computers and one small home router with DHCP functionality. I configured the router with the "dynamic DHCP" setting, ie, the static DHCP with MAC-Address was not used. Before that, I used the manual IP configuration, defining the two computers' names in the /etc/hosts file.
Example:
10.0.0.2 comp2
10.0.0.3 comp3
Now, with DHCP, the above example is no longer appropriate, because the DHCP server is supposed to tell the computer what IP number it will receive. However, I am missing something, because I haven't figured it out yet how to make one computer know the other computer's name. Is it that I haven't installed a name-finding package? Is there a simple way to accomplish this (one computer finding the other computers' names)?
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Sep 21, 2010
I have ubuntu server installed on a pc. The motherboard died, so I switched the HD to another computer. Everything is fine except the network. I cannot access this computer from other computer (while it was possible before). I looked at the interfaces and everything seems fine. The nic itselft seems to work too.
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Jun 7, 2010
i want to find ip address of other computer which are connected in LAN..suppose ther are 5 compter in LAN and i want to find ip of all remaining 4 computer using my computer only in command or any other way is ther....
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Feb 10, 2011
I have 2 computers one of them ubuntu installed and on the other one windows(xp) installed.how they can communicate?like file sharing,printer sharing etc.?wat kind software or what i need?
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Jan 1, 2010
I downloaded the vnc 4.1 on my linux computer which is running Ubuntu I'm not sure how to view it on a windows computer. I really have no idea what i'm doing so can anyone that answers please add as much detail as possible.
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