Ubuntu Networking :: 11.04 Ssh Broken Connecting To 10.04.2 Machines
May 1, 2011
I have just upgraded 2 machines to ubuntu 11.04. One was an upgrade, the other a new install. On both machines, I cannot ssh to any machines running Ubuntu 10.04.2 I can ssh to machines running 10.04.1, 10.10, etc. and all those machines can connect to the 10.04.2 machines. I get: Read from socket failed: Connection reset by peer To workaround the problem, I have copied the /usr/bin/ssh on a 10.10 machine to the 11.04 machines.
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Jun 24, 2011
Here is the setup I have. Two debain (squeeze machines) A1(eth0,192.168.33.1, netmask 255.255.255.0) and B1(eth0,192.168.43.1, netmask 255.255.255.0). They both have 3 nics'. So I am trying to connect to each other with a crossover cable and I have added the routes manually. eg: on machine A1 route added was
route add -net 192.168.43.0 netmask 255.255.255.0 gw 192.168.33.2 eth1
and on machine B1
route add -net 192.168.33.0 netmask 255.255.255.0 gw 192.168.43.2 eth1
For project purposes they both have to be on different networks, evn thouhg they are in same room.
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Feb 12, 2009
I have dell dimension 4700 I installed slackware 12.2 onto with the of making it a headless home network jukebox that I could ssh into and control via a crossover cable.From other posts I've seen, it looks like I just need to set up the IP addresses under the same netmask, and can use ssh then. On the slackware machine, it does not seem to recognize an eth device.
Code:
# dmesg | grep eth
Driver 'st' needs updating - please use bus_type methods
Driver 'sd' needs updating - please use bus_type methods
Driver 'sr' needs updating - please use bus_type methods
[code]....
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Feb 9, 2010
I just installed Ubuntu 9.10 and its great. However when I connect to the internet at home it shows that the connection has been established but I still cant connect to the internet. My flatmates are all able to connect. However, I am able to connect from work both wirelessly and through an ethernet cable.
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Mar 9, 2011
Ive managed to install samba, I've shared a folder. I can access from a Windows 7 machine via \ubuntupublic. I can put files in the folder form the ubuntu machine and edit them on the windows box. I can put files in the folder/share from the Windows box but then I cannot edit them on the Ubuntu machine (they are read only and have a "Lock" over them). I can fix this by going to the properties of the file/folder in Windows and manually assigning "Everybody" full control (then the lock disappears and all is well.) I want read/write access to all the folders contents from both machines all the time (security is NOT a concern I WANT the permissions wide open) what am I doing wrong?
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Nov 18, 2010
I've been learning linux for a while now with half an eye on making a career out of it in future. One sizeable gap in my knowledge at the moment is networking. Is it feasible/desirable to set up a network of virtual machines to use as an environment to learn networking? My budget is non-existent so I was hoping to be able to get a basic understanding of the principles from installing a few desktops, a virtual gateway etc on VMware workstation on my laptop, and doing a lot of reading online.
Is this feasible, or will I just end up learning about virtual networks instead of real ones? Also how much power would be required, because my 3GB RAM lappy has just gone bang and all I have now is a (new) 1GB RAM lappy.
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Jan 21, 2009
I wanted to be able to have separate NICs with separate IPs connecting to separate gateways on a machine so I could put an ftpd on each one. I tried binding an ftpd to each, and running separate instances of the ftpd. I tried virtual hosts.
NOTHING worked. I could either use one ftpd or the other. I could either connect via ssh on one IP or the other. the second I turned one NIC off stuff would work again. I messed with basic iproute commands, andnothng worked until I got this script to run, which allowed me to use each NIC independant of the other.
Code:
#!/bin/sh
#ip route flush all
ip route del default dev eth1
ip route del default dev eth0
ip route del table 1
ip route add table 1 to default via 10.10.10.1 dev eth1
code....
But now, samba client doesn't work. cifs mounting doesn't work either. It can't connect.
BEFORE I ran that script, I could connect via ssh, or to the ftpd running on the machine using a LOCAL IP - 10.10.10.2. AFTER, I have to use the external IP, or I cannot connect. I know that has something to do with it, but I do not have the advanced linux routing knowledge to redo the script or come up with a solution.
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Aug 25, 2009
Networking on Fedora 11 doesn't work for me on various machines. Fedora 10 does, but only if you don't do an update.Why does Fedora get worse the more you keep it up-to-date?
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Feb 24, 2011
I have a problem that I'm trying to solve with a lack of some network knowledge. At least I thought I knew them.This are my machines:
1. Ubuntu Desktop - OpenSSH
2. Asus WL520 Router (with Tomato firmware) - DropBear
3. DNS323 Server - OpenSSH
4. Windows 7 Desktop - Putty
@Home
(3) DNS323 server is WAN accessible (via ssh)
(4) Windows 7 is not WAN accessible.
@Office
(1) and (2) are both not accessible via WAN.
(1) and (2) are in the same network (192.168.1.x)
Code:
(192.168.1.5) (192.168.2.1)
[Ubuntu]----[Firewall]----[Internet]----[DNS323]----[Windows 7][code]......
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May 10, 2011
I've got a desktop running 10.04 64bit with a broadband connection connected through usb on eth1, I also have a laptop running 10.04 32bit and I've got both connected with a cat 6 crossover cable both on eth0, connected directly without a router. I would like to share files and Internet between the two.
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Jul 27, 2011
I have no idea how to search this one. I can connect to the internet no problem. I can connect to Windows XP and 7 using
Code:
nautilus smb://192.168.0.x
I cannot connect between Ubuntu machines. Which thread am I looking for? I've been using Ubuntu for years, and still do not have a clue about this, but it's not been an issue until my family wants to play games over the home network.
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Jan 19, 2011
I manage a cluster running RHEL 4. Recently, the head node lost contact with some (but not all) of the other nodes on the LAN. This is very bad because almost all of our data is on an NFS server, so our users can't work until I fix this. The problem apparently started this morning (Jan 19), although there's at least one machine on the LAN that I had lost contact with before then.Here is all the information I think might be useful.From /var/log/messages:
Code:
Jan 18 21:45:21 XXX kernel: tg3: eth1: Link is down.
Jan 18 21:46:02 XXX kernel: tg3: eth1: Link is up at 1000 Mbps, full duplex.
[code]...
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Sep 17, 2010
I may be missing something very easy here, but I have a fresh install of Ubuntu 10.04 64 bit (I have also tried 10.04 32 bit) and I cannot connect to my windows machines. I can't connect by going to the network window, or by connect to server via ip. Basically, I can see the windows machines but then I double click it, and it asks for the credentials. I'm the admin of all of the machines, and I only have one login to my windows machine, which is my name First Last. I am entering this, and my password (which I'm sure is correct) and click "Connect". It thinks for maybe a half second, then presents me a blank credentials box, wanting me to start over.
I can connect to my Macbook without any troubles.
I'm using an Acer AspireRevo 1600, wired connection.
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Jan 24, 2011
first, here is our setup:
Linksys Router with firewall
1 Linux Server -- Running Dapper
Multiple Linux ThinClients running off the linux server
Multiple Freestanding Linux Machines -- Running ubuntu variants
Multiple Freestanding Windows Machines -- Running windows variants
The issue is that certain websites will not load on the freestanding linux machines, but they will load on our linux server and all the windows machines. examples: [URL].. These sites will start to load, but they never really finish and just seem to time out. I have tried changing the dns on the freestanding linux laptops to use 208.67.220.220 and this does not solve the problem.
I have checked the firewall rules and they seem pretty standard.when the linux machines are used on other networks, these websites work, so the problem seems to be related to this particular network.
When I do (freestanding linux):
Code:
traceroute acer.com -I
The trace times out at 30 hops
When I do (linux server):
Code:
traceroute acer.com -I
The trace reaches the destination at 19 hops
Both of the traceroute requests start by going through the router. So the big issue is that websites will load on our linux server and all our windows machines, but not on freestanding linux clients.
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Feb 27, 2011
Me and my friend have been talking about networking our two machines over the internet. So he has done his side. Now i need to do my side... Any ideas on how i would go about configuring my computer to do this?
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May 19, 2011
I have Ubuntu Server 10.04 running as a samba server and a VPN server using PPTPD. I am trying to connect two users to the VPN, which I am running Windows Ultimate on one, and Windows Home Premium.
Connecting to the VPN server from any location, I get an error 619 on the windows machines, and I have googled for what feels like days about the error and can't find a working solution. I look in the /var/log/messages file and see:
Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
pppd 2.4.5 started by root, uid 0
Using interface ppp0
Connect: ppp0 <--> /dev/pts/1
Modem hang up
Connection terminated
Exit.
Does anyone have any ideas what could be wrong?
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May 30, 2011
My netbook runs 10.10 and my desktop runs both 11.04 and 10.10 atm. My netbook can connect and stay on the internet, but my desktop (in either version) connects for ~ 5mins then stops working without warning. It says I'm still connected, but I can't ping anything on or off the network.
My wireless card has always worked fine with every other wifi. Just not this one.
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Feb 2, 2010
How do I go about having XP client machines authenticate into their Fedora 11 accounts upon starting up windows? For example, I would like the Windows logon window show their accounts on the F11 server so they can log in and have their server stored home directories used via the network on the XP client machine they are using
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Apr 25, 2011
I am trying to access folders on my main computer running F14 from my laptop, also running F14. I have had no luck, in the past I've networked windows 7 and Fedora and it was easier than this
I have tried setting up Samba and everything looks fine, except I can't access the folders from my laptop. I'm sure this has been discussed on the forum and believe me I've searched, here, various search engines, the official Fedora guide, and still no luck.
how to share folders between two computers?
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Jun 23, 2010
So in an effort to increase the speed of my netbook, I removed Ubuntu and installed Lubuntu on it. When I tried to mount my samba share as I normally do, I noticed it wasn't able to connect - mount error(113): No route to host. Sensing something fishy, I attempted to ping the machine (both by name and by IP) - Destination Host Unreachable.The machine I'm trying to connect to is using Ubuntu 10.04 x64. I attempted to ping the other way and it was able to connect to the netbook just fine. When the netbook was using Ubuntu, it was connecting fine. My iptables check out ok, but here is the output of iptables -nvL:
Code:
Chain INPUT (policy ACCEPT 213 packets, 21635 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
[code]....
Does lubuntu have some funky firewall built in to it that I can't find? (I've Googled for information on a Lubuntu default firewall and can't find any)
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Jun 26, 2010
I have 3 home computers. Two of them are dual boot Windows and Ubuntu. The third runs only Ubuntu. I want to share files and two printers among the three machines. What is the best approach to doing this.
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Jul 13, 2010
I want to share home directories from two different machines so that I can log on to both using the same account.
One idea was to host the home directory on a server and mount it to a local directory. I don't think this will work though, because I'm pretty sure the directory wont be mounted until the logon session starts and I'm guessing it wont without the appropriate home directory.
So the question becomes, what tells the OS where the home directory is in the first place. Yes it's in a default place but that path as to be stored in some config file somewhere right?
But another problem is... If the server goes down, I'll have to make sure I can log on via root at the logon screen/get into a terminal/use LiveCD to get access.
It wouldn't be too much of a problem to create an account on each machine, all my media will be on the server anyway. But if I create an account on one, it would be nice if it was automatically added to the other. And it would be great for keeping settings if I want to do a compete wipe if I'm upgrading the file-system or something. I suppose I could just do a backup like everyone else..
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Aug 12, 2010
I have two Ubuntu 10.04 computers ans several windows computers on a common ip address on my LAN, I cannot connect to the shared folders on the Ubuntu machines but all windows machines connect fine. I see the Ubuntu computers in networks on both Linux machines. When I try to access a shared folder on the Ubuntu machines it ask me for the user name, domain, and password even though I set Remote Desktop sharing to "Configure network to automatically accept connections"
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Oct 28, 2010
I am running 10.4 on a number of machines but can not create a network and share media and directories between them. I can not find any machines on my network. I know smb is installed because I used it when running windows. I have not used Ubuntu or any other Linux OS to run a network before,
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Feb 13, 2011
My two machines are both running Ubuntu 10.10. I want to transfer program files between them using a local area network.
My Ubuntu machines can both see the Window machines on the network, and get files from them. But my Ubuntu machines do not detect each other as being on the network. Nor can my Windows machines detect my Ubuntu machines.
From what I can tell, that's normal, and I've become resigned to using a pendrive to transfer files between the two machines. Or even sending files as email attachments.
there is a clean and easy way to transfer files between two Ubuntu machines on the same local area network.
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Feb 16, 2011
I'm running into a curious networking hiccup with my router setup. I have a D-Link DIR-628 wireless router connected to our modem, and a wire running from that to a Linksys WRT-54G (v1.1) in our basement. This setup worked great for a few days, but then suddenly the Linksys stopped routing us to the internet. I can connect to the router page on the Linksys and using the diagnostic tools I can ping the web from there, but none of the computers connected to it can. Everything is fine when connected to the D-Link.
After fiddling around with just about every setting on the Linksys I finally gave up and tried resetting it to factory defaults--and it worked! Everyone could access the internet again. But then, every day or two it locks up again and I have to reset factory defaults again.
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Mar 2, 2010
finaly got my Centos host ready and configured,i have Vmware installed inside the Centos Host.how can i allow to RDP to the Virtual machines inside th Centos,
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Jan 14, 2010
I have a home network of 4 computers - 3 Windows & 1 Xubuntu I'm able to connect to the Xubuntu machine from all of the Windows computers, but I can't do the opposite - connect to the Windows machines from the Xubuntu. I'm using Gigolo, and I can see the network, but it says no servers found.
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Feb 15, 2010
I just set up an ubuntu 9.10 server (no desktop environment, command line only) and I'm unable to see my samba share. I followed these instructions. Here are the relevant parts of my smb.conf file: Quote:
workgroup = JASONGROUP
# I un-commented this
security = user
[code]....
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May 5, 2009
My new HP mini running Ubuntu sees my HP notebook running Vista,my Compaq desktop running Vista, and my HP desktop running XP as computers belonging to my workgroup, but I can only access my files on the XP machine. The mini and the notebook are wireless and the desktops connect to the router by cable.
All of the computers connect through the router to the DSL modem, and each of them connect to the HP wireless printer. None of the other computers see my mini as belonging to my workgroup, specifically including my XP computer. Figure that it is likely normal that I cannot with my mini open files that I find on my XP, but have to copy and paste them to my mini or one of the flash drives I use with it before I can open them.
I understand I have described a "well known problem" caused by a non standard sequence in Vista, that can be obviated by a fix to the login sequence that can be made to the linux code in my mini so that it will recognize and perform the login (user name and password) that is required when a Vista machine is encountered.
But I'm in over my head, unable to even find the command line on my mini.
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