Networking :: Gateway Changing Hostname?
Mar 14, 2010
I am coming across a strange error with my gateway. When I do a "ping", this is what I get below:k-63a5b848c6cb4:~ # ping simba PING simba.gateway.2wire.net (192.168.1.69) 56(84) bytes of data.
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=2 ttl=64 time=0.029 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=3 ttl=64 time=0.023 ms
[code]....
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Mar 14, 2010
I am coming across a strange error with my gateway. When I do a "ping", this is what I get below:
k-63a5b848c6cb4:~ # ping simba
PING simba.gateway.2wire.net (192.168.1.69) 56(84) bytes of data.
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=2 ttl=64 time=0.029 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=3 ttl=64 time=0.023 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=4 ttl=64 time=0.015 ms
Does anyone know what the problem could be?
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Feb 13, 2009
After installation, I changed the hostname of my computer, using system-config-network. However, after every reboot, it no longer wants to automatically connect to the network. The only way I could fix this was to remove NetworkManager-gnome and install knetworkmanager and use it to create a new connection. There was a flag there to autoconnect.
The other problem is that the hostname never shows on my network. My other PCs all have visible hostnames. One is an Ubuntu box and the other Windows XP. These machines can be pinged by hostname. The Fedora box can only be reached from the other PCs by specifying the numeric IP address.
I've checked the usual places and the hostname is correctly specified. Entering the 'hostname' command returns the correct hostname on the Fedora box. I am running Fedora 10.
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May 14, 2010
I just have a simple question. When I installed Lucid a few weeks ago, I didnt feel very inspired, and thus left the host name at default. I just changed the hostname today, and I discovered that I can no longer resolve the host for ssh connections to the computer. When I changed the hostname files, I followed this guide: [URL].. Is there a file that I need to change regarding SSH that has a hostname in it?
Specifically, Im trying to ssh and VNC connect to the Ubuntu box from my iPhone. I have a PuTTY client installed on it (from the app store, called iSSH) and up until now, it worked.
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Jul 20, 2011
How I can change IP and hostname in red hat linux es 5 command mode , not in desktop GUI?
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Jan 3, 2010
I have a network of 2 WinXP machines and one linux box. I have fiddled around with the settings as you do when learning. The network is working. The network neighbourhood on the WinXP machines recognise the linux box and vice versa, (the linux Places|Network recognises the 2 WinXP). I can Ping the linux box using its hostname from a WinXp. But I cannot do the reverse. I get an 'unknown host' response. I can ping the linux to itself using its hostname.
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Jul 29, 2010
I'm having an issue on two Fedora Core 13 machines where I can ping others by hostname, but the hostname resolution fails whenever I use ssh/scp/vnc/etc. I can still do these things by IP address, just not by hostname. RHEL5.3 machines on the same network with the same configuration do not seem to have this problem.
Here's the not-so-quick-and-dirty description of the situation:
I know that there is a virtual router at 192.168.31.1 and another at 192.168.30.1. I also know that there is another network (let's call it 90.90.90.0) and on that network lies a number of resources. By nature of this configuration, any machine on 90.90.90.0 can be accessed by any 192.168.x.x, but not the other way around. Beyond that is out of my hands and currently out of my scope of knowledge.
I have a dnsmasq server on 90.90.90.10 that operates as a secondary nameserver, another machine out of my sphere of influence is the primary nameserver (90.90.90.31).
The secondary nameserver on 90.90.90.10 holds the hostnames of our development machines. The problem is that in some cases, while I can ping by hostname all day long, services such as ssh, scp, vncviewer, etc all fail to resolve the hostname. In other cases I can do all of these things.
Every machine has an equivalent resolv.conf:
As an example, I will show the output of a handful of my development machines:
I also included columbia as a one-way test -- even though it cannot access 30.x or 31.x, they can access it:
columbia -- physical machine, Red Hat Enterprise 5.3, IP 192.168.100.200
Okay, so here are the various outputs. Remember, nibbler, discovery, and atlantis can ALL:
- Ping by IP address
- Ping by hostname
- ssh, scp, vnc, etc by IP addess
Additionally, the SERVFAIL reply from 90.90.90.31 is expected since my dnsmasq server is on the secondary server.
Note that the only machine that can both ping and ssh/scp/etc by hostname is nibbler, which also happens to be the only one of the three running RHEL5.3 instead of FC13. Other virtual and physical machines running on the 192.168.31.0 and 192.168.30.0 networks (all running RHEL5.3) work just like nibbler does. So the problem seems to only affect machines running FC13.
Final note: selinux is disabled, iptables is disabled, ip6tables is disabled.
Other than that, discovery is a brand-spanking-new install straight off of the FC13 DVD. atlantis has been around longer, but its just a file server so I haven't done anything too crazy to it.
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Apr 14, 2011
This isn't really a problem or an issue but I'm kinda curious about it. I thought openSUSE generate a hostname like "linux-xxxx" when you install it and that was it. But for me it generates a new host name every time I turn on my computer. For example, right now it's "oseiler-linux" yesterday it was "mac-sophia". I'm wondering how it generates these kinds of hostnames.
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May 24, 2010
I'm trying to ping another Ubuntu computer on my local network. If I try doing,ping <hostname>then I get the messageping: unknown host <hostname>however, if I doping <hostname>.localthen I get a response back. I was wondering how I can change it so that I can ping without having to append .localI've installed winbind and modified my /etc/nsswitch.conf file but this has made no difference.
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May 22, 2011
I have an ubuntu 10.04 server with hostname "abc.domain.com". However, due to migration, we had to change to hostname to something else, "xyz".
I have done changing /etc/hosts and /etc/hostname and run /etc/init.d/hostname start.
Checking the hostname and all shows it is now using hostsname of xyz. However, email sending out is still using old hostname. We have some scripts that will send out alerts like failed rsync or hdd space full to my email account. But I see the sender is still "root@abc.domain.com".
How do change that to xyz? I am using postfix. I have edited main.cf and restarted postfix but no go.
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Jan 29, 2011
I cannot uncheck the "Change Hostname via DHCP" box because it is disabled. Next to it says "No interface with dhcp". How can I fix it? I'm using OpenSUSE 11.3/KDE4
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Jul 23, 2010
I am new to Ubuntu 10.04 and so far I love it! I recently created a LiveUSB and I am running Ubuntu from my USB drive with preserve mode.
I changed the /etc/hostname and /etc/hosts files with my new hostname and everytime I reboot those files are going back to original state and change the hostname back to ubuntu...
The rest of my installed applications and settings are preserved... Is there a way to permanently change the host name?
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Mar 14, 2010
I am coming across a strange error with my gateway. When I do a "ping", this is what I get below:
k-63a5b848c6cb4:~ # ping simba
PING simba.gateway.2wire.net (192.168.1.69) 56(84) bytes of data.
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=1 ttl=64 time=0.041 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=2 ttl=64 time=0.029 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=3 ttl=64 time=0.023 ms
64 bytes from k-63a5b848c6cb4 (192.168.1.69): icmp_seq=4 ttl=64 time=0.015 ms
Is the gateway doing something strange?
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Apr 6, 2010
How do I set $HOSTNAME to dynamically update with the hostname that is specified for the ip in DNS?
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Jan 21, 2010
the difference between $HOSTNAME and $(hostname)?
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Jul 11, 2011
I am trying to get a Linux (Slackware 13.37) working in a Windows networking environment. The IT support for this organisation does not extend to Linux support, so I'm limited in what help I can get for this.
I'm trying to get to the point where I can get to the internet to download what I need on this Linux machine.
The situation is this (*fictitious addresses used) -My Linux machine uses a fixed IP address (10.100.150.21)
My Windows machine uses a DHCP assigned IP address (10.100.150.213)Both Linux and Windows machine are configured to access the gateway server (10.100.150.1)So, I can ping the Linux machine from the Windows machine and vice-versa.I can ping the gateway machine from the Windows machine.I can browse Windows Shares on the network via SMB from the Linux machine.I CANNOT ping the gateway machine from the Linux machine with the Destination Host Unreachable message being the error message.
For actual internet access I need to access a proxy server but since the Linux machine can't even ping the gateway server, it fails to ping the proxy.Now, I have been told the gateway is a HW based router and for Windows machine they use some software for authentication to connect to the network. This software isn't available for Linux, so that's why I've been told to use a fixed IP address.My experience of networking is pretty basic and most of the Linux setup is done via running Slackware's setup program.
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Mar 2, 2010
how to allow a specific hostname with specific ports in iptables?
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Jul 16, 2010
I have a Fedora 13 desktop I have at work that I want to use to back up data off my laptop, also running Fedora 13. I can ping the hostname of the laptop from the desktop, but not the other way round. I don't think I did anything to have the laptop register its hostname with the DNS server. Since my company uses DHCP, I can't just edit the hosts file on the laptop. I want to be able to use the hostname when I mount the NFS shares for the backup. I also want to run the desktop headless so Remote Desktop needs to be able to find it. Is there a way to force the registration? If I ping the laptop's fully qualified hostname from itself, I get back the correct IP address. If I do the same thing on the desktop, it tells me it can't find its own hostname. I do have the domain name configured in the dns search path under System->Administration-Network
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Feb 1, 2010
Running Fedora 11.
Did get a Kimsufi dedicated server through [URL] When I did get it the hostname resolve does not work.
I have never got any of this problems before so this is my first time playing with the network settings.
Nothing works! Lynx, wget, yum and so on. IT works if I do enter the hostname by its IP. But thats not working in the long way
Quote:
ping cnn.com
ping: unknown host cnn.com
Quote:
#nslookup cnn.com
Server: 127.0.0.1
Address: 127.0.0.1#53
[Code].....
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Nov 13, 2010
When I use Ubuntu, my DSL modem correctly gets the hostname I call my computer "mertensia", but I'm having issues with Fedora. Yet, when I look at the name assigned by the modem (using URL... in a web browser),I need the PC Name to be mertensia, because otherwise it will complicate how I ssh immensely.
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Jul 3, 2011
I have 4 installations of Fedora 14 running on a Win 2008 R2 server in Hyper-V.
When I try to ping my desktop or the host server via the hostname from within any of the Fedora installations, the ping fails. I can ping by IP without issue. Also if I try to ping the VMs from my desktop it fails. I have an XP VM setup that I can ping without issue via hostname and IP.
All of the VMs can access the Internet without issue. I have disabled all firewalls on all systems with no luck. My desktop can ping the Hyper-V server without issue so it would appear that the problem lies with the Fedora installations.
My resolv.conf
Code:
Does anyone have anything I can try to get the name resolution working?
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Jul 19, 2010
I just finished installing ubuntu server 9.10 - fairly new. I couldn't run SSH when I use IP address of the server. I've also setup DynDNS that returns responses when I ping. SSH works fine when I use the hostname of my server (leopard) but SSH doesn't work when I use IP.I was expecting IP for "eth0" something starting with 192.168.x.x as are my other computers running WIN on the same network.Any ideas why
1) Why am I not able to run SSH from IP assigned to server by DHCP. It works when I use machine hostname (leopard)
2) Why SSH isn't working from DynDNS web hostname when it responses back the ping command.
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Oct 6, 2010
ok so when i sudo apt-get update i get a bunch of crap that says no address associated with hostname
ive googled this and changed my /etc/hosts to all sorts of things and no luck apache wont even work now either. this server is for a few websites the company i work for hosts. currently i swaped it over to another windows based comp but we want it on ubuntu.
ive heard this is dns related? and that a FQDN is needed? if so im not sure how to re write my /hosts file but as of not it looks like this:
Code:
127.0.0.1localhost
63.119.120.135speed
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
[Code].....
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Mar 22, 2011
I have set up an Ubuntu 10.10 server with SAMBA shares and Apache web server. Everything was working fine. Then there was a power failure and after I restarted the server the XP pc's can see the server using the hostname. They can only see it using the ip adress. I haven't change anything on server or client side. Just the restart of the server.
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Apr 6, 2011
I have a Windows 7 machine that I have an installation of Ubuntu 10.10 via VMware and am having an issue with pinging by hostname thorugh the VM. From the Windows 7 machine I can ping by name without any issue but not with the VM. I have the VM as bridged so it is pulling all the network stuff via DHCP including the correct DNS servers. I can ping all the DNS servers and host without any issue. I have verified my /etc/resolv.conf entries are all correct.
If I run nslookup via the VM it says:
PHP Code:
I have also verified that AVAHI is running to cache the DNS stuff and still no success.
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Sep 8, 2010
I got an application deployed on Websphere Application Server on SUSE Linux V 10. We are accessing the application using the IP address in the URL. Please let me know how to configure the DNS, so that we can use the Host name in the URL and the Host name is automatically mapped to the IP address.
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May 31, 2010
What is the right way to specify hostname(in local linux box, not in DNS server):
myhost1
or
myhost1.mydomain1
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Feb 12, 2010
I had always worked fine with my Red hat 4.0 untill yesterday night when i logged in i had an error saying: "HOSTNAME could not be found, you can resolve this by editing the /etc/hosts"eventually it logged me in but when i launch the terminal ...i now see 'username@(none)dir' .In other words my HOSTNAME shows as 'none'.I looked into /etc/hosts file but everything looks the same, which for is:127.0.0.1 mluboya,
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Mar 31, 2010
How I can ping my debian computers on their hostname?
I have installed both samba and winbind and I have also changed the line in /etc/nsswitch.conf to:
Hosts: files wins dns
I have done the same thing on another linux box (ubuntu) just to see if that worked and it did - I could ping it on the hostname.
Also, I have trid to add the ip/hostname in /etc/hosts and even that didn't work.
The /etc/resolv.conf seems to be as it should.
In the /etc/hostname the hostname is updated.
I have tried to restart the samba service and the networking service and even the entire computer but none of it worked.
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Feb 7, 2011
Is there a way to ping the hostname in linux just like windows?
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