Ubuntu Networking :: Setting Up Work Loopback Server

Mar 24, 2010

I'm setting up a loopback server for work related testing. I have a small program that needs to be executed through telnet from about 200 IP's on the same network. On the server, I have to set a static ip, enable telnet login, and place my 2 program files in the appropriate folders so it will run. I have been on this for 2-3 days and haven't got far.

My /etc/Network/interfaces file is this...
Auto lo
iface lo inet loopback

The rest of terminal is filled up with these, and it states that the file only has 32 characters. I don't know if this is a privilege issue or not. I've read several threads on telnet, and lots of arguments about ssh, but I can't run ssh, so I need to enable telnet. There is not a security issue. I run a private network where the only valuable resource would probably be the text file with my IP address on it. Its also accessed by people that have very limited networking knowledge and no linux knowledge...

So,
Set static IP
Setup telnet server...
Any takers?

View 3 Replies


ADVERTISEMENT

Ubuntu Networking :: Loopback Won't Work When Not Connected To Any Network?

May 6, 2010

I'm using Wordpress on Apache localy to keep a diary (it's convenient because of the tags).
When I'm connected to any network (be it wired or wireless) my Apache (and Wordpress, of course) works just fine. But as soon as I go offline, I can't access the web server neither through browser nor by telneting to the 80th port. Pinging localhost works just fine.Here is my ifconfig when offline and when online:Online:

Code:
eth0 Link encap:Ethernet HWaddr 00:24:54:6f:07:aa
UP BROADCAST MULTICAST MTU:1500 Metric:1

[code]...

View 7 Replies View Related

Ubuntu Networking :: Setting Up IPSec VPN Server On 8.10 LTS To Work With IPhone Clients?

Apr 3, 2010

I've searched through google, and all I can find are instructions on how to set up a L2TP/IPSec VPN that works with macs and iPhones. I'm NOT trying to set up an L2TP/IPSec VPN. I'm trying to set up a pure-ipsec vpn.

The iPhone IPSec client is a built-in cisco client, I believe. I'm staying away from L2TP and PPTP because I need multicast packets to go through. *edit: wow, i just noticed that the title says "8.10 LTS". Oops! I obviously mean "8.04 LTS". Gah, the lack of sleep got to me.

View 6 Replies View Related

Networking :: Will Bringing Down Loopback Interface Make Whole Server To Go Down?

Dec 14, 2010

I have a client's linux server where someone added a script which sends spam mails from the server's local loopback address (127.0.0.1) all my seniors worked on it and couldn't trace the script on the server this issue was going for a week, now I have an idea to bring down the loopback interface of that particular server(ya, that was not a permanent solution but just had an idea), but my support manager told that it will bring the whole server down(so far as i have learn't loopback address is used only for testing the NIC card's functionality), is that really bring the server down.?. How ever i tried this using a test machine all the connections works fine even after i bring down the loopback interface. As my client's server is a production server i can't test it there without clear knowledge, can any one help me out whether will it bring down the server or will it cause any side effects on it(i know that you guys are experts so i am asking it here)?

View 5 Replies View Related

Ubuntu Servers :: Can't Ping Loopback Or Domain Names / But Ip's Work

Jan 7, 2010

I have been logging into a server remotely and trying to set up a mailing list on it. The server is the newest version of ubuntu server: uname -a: Linux Themis 2.6.28-11-server #42-Ubuntu SMP Fri Apr 17 02:48:10 UTC 2009 i686 GNU/Linux.I noticed I could not download packages with apt-get or ping domain names, and I can't even ping 127.0.0.1.And do you think there is something wrong with the network card?

View 9 Replies View Related

Fedora :: Grub2 Loopback Boot From Livecd Iso Image Does Not Work?

Nov 6, 2009

I wonder why fedora livecd images cannot be booted by grub2 loopback method, which works with ubuntu and debian.i have tried something like this:

menuentry "fedora 11 i386" {
loopback loop /boot/iso/Fedora-11-i686-Live.iso
linux (loop)/isolinux/vmlinuz0 root=CDLABEL=Fedora-11-i686-LiveCD rootfstype=auto ro

[code]...

View 5 Replies View Related

Server :: Loopback Device - Maximum Size

Sep 24, 2010

This seems like a relatively simple question, but the answer seems to elude everyone: What is the MAXIMUM SIZE of a Linux loopback device (not counting any specific filesystem limitations)? Is it the maximum size of a linux block device?

View 4 Replies View Related

Ubuntu Networking :: Loopback Interface Not On Startup?

Apr 20, 2010

I own an Ubuntu Server 9.04 on a remote dedicated server. Since a few days (?) the loopback interface is not 'up' on reboot : I only have eth0 (which works fine).Here is my /etc/networking/interfaces (did not change since server initialization):

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface

[code]....

View 3 Replies View Related

Ubuntu Networking :: How To Enable Loopback Connections

Aug 22, 2010

I run a webserver Apache2, php5, and MySQL. They are all set up correctly and I can access my website at [URL] I have, also installed, noip2 to update my IP address to no-ip.com for my domain name. Here's the problem: I can access my website through that domain name on other computers, both on internet and on the same network. But I cannot access it from my own computer (using the domain name instead of localhost). I need to be able to access the domain name on my computer because some pages on my website have been defined as the address to my domain name and not localhost. I cannot change this to localhost because if I do then people outside cannot work the webpages correctly. I had the same troubles on Windows before and I simply enabled loopback connections by typing in my private IP address along with the domain name into the Windows hosts file. I use version 10.04.

View 3 Replies View Related

Ubuntu Networking :: Nat Loopback - Get The Sever Viewable To Everyone Outside Of My Network ?

Sep 1, 2011

So I have an Ubuntu server setup but my modem from my ISP only has one ethernet port so I have to run my server behind a router. I have been able to get the sever viewable to everyone outside of my network but when someone is inside my network they have to view the server by the direct IP the web address doesnt work nor does the actual static IP. I believe this is something to do with my router not being able to loopback. It is a belkin N600 DB.

View 7 Replies View Related

Fedora Networking :: Loopback Mtu 16436 ?

Oct 12, 2010

Why does the loopback interface has such a high mtu? I get it that it needs to work out even large packets, which is logical but why this specific number? I can set the MTU even higher with the ip link command, so it's not a limitation of the variable used.

View 4 Replies View Related

Networking :: Pseudodevice And Loopback Device ?

Nov 22, 2010

The concepts of pseudodevice and loopback device ?

View 1 Replies View Related

Networking :: Communication Without Loopback Device

Jan 13, 2010

I have two ethernet card on my computer, I want to make a TCP or UDP communication between these two cards, so I disable loopback: #ifconfig lo down. but with out loopback I can't even ping an eth from another one. how should I do? I want traffic to really pass eth cards.

View 2 Replies View Related

Networking :: Ipv6 Loopback Configuration

Feb 15, 2011

I have a server application that uses loopback addresses to open servers on linux machine.

For IPv4 with one line of configuration I can open many servers according to the mask I use for example with 10.10.10.0/24 I can open 254 servers.

How can I do the same for IPv6 ? I am able to add loopback interfaces but only for one host. Is it possible to add for a subnet ?

If not what is the max number of addresses that I can add ?

I also saw that it add the address only to loopback lo and I can add it to lo:3 for example.

View 1 Replies View Related

Networking :: Proxy Setting - Doesn't Work With Etho(wired)

Mar 7, 2010

I got a problem about network proxy setting. With the graphics setting interface, I set auto proxy with the URL address but it is weird that the setting only work with eth1(wireless), doesn't work with etho(wired). however my wireless driver is always a problem for Linux. i also tried export http_proxy= XXXXX:8080 it still doesn't work at all.

View 2 Replies View Related

Ubuntu Networking :: Added Some Loopback Ip's And Strange Behaviour Ensues?

Feb 7, 2010

I added the following lines to my /etc/rc.local file:

Code:
ifconfig lo:0 10.10.10.1 netmask 255.255.255.0
ifconfig lo:1 10.10.10.2 netmask 255.255.255.0

[code]....

View 5 Replies View Related

Ubuntu Networking :: Network Tools Defaults To Loopback Interface

Jul 22, 2011

I'm running Ubuntu 11.04 and I've been unable to access any type of Internet service besides web browsing. When I check on Network Tools, it's always set on Loopback Interface, regardless of whether I've just switched it to Ethernet Interface. I haven't been able to download system updates through Update Manager. I'm not very experienced with Ubuntu.

View 9 Replies View Related

Ubuntu Networking :: All Wireless Stops Working If Loopback Is Enabled In Router?

Jun 8, 2010

I'm running a Source Dedicated Server on my Ubuntu laptop, and to connect to it via external IP from other computers in the network I need to enable loopback in my router.This was working fine, but then I disconnected my laptop for a few days, and when I came back the wireless stopped working on my Xbox. I reset the router to factory defaults, and then setup everything again. It was all working fine until I enabled loopback again and power cycled my router. Now every time I do that, the internet on Ubuntu stops working and the wireless on the Xbox stops working.

Edit: You can ignore this I guess. It seems I was actually DISABLING loopback by enabling that router option, which I guess caused this. Strange, because the first time enabling this option was the only way to get my external ip to work. Oh well, everything is fine now.

View 1 Replies View Related

Networking :: Pppd Nomagic To Stop Loopback Errors?

Oct 16, 2010

QUESTION: Where do I add "pppd nomagic" to stop analog modem loopback errors? (I am using Gnome PPP.)BACKGROUND INFO:I am using Ubuntu LTS 8.04 on a laptop and have an analog modem connected via USB serial cable. The 8.04 dialup and the analog modem work flawlessly.Modem disconnects when using Ubuntu LTS 10.04.1 Live USB:I am testing LTS 10.04.1 on a live USB drive that I purchased preinstalled from On-Disk.On the live USB drive, I am able to get a dialup connection with my ISP long enough to pull up a web page with the browser. However, the analog modem disconnects within minutes with exit codes 16 or 17.an pppd:16 The link was terminated by the modem hanging up.The PPP negotiation failed because serial loopback was detected.

View 1 Replies View Related

Fedora Networking :: Wired Connections - Shutting Down Loopback Interface

Jun 22, 2010

I have a problem with my F13 and wired connections on my Acer TravelMate 2410. When I connect the inet cable it doesn't show it as connected. When I type ifconfig, it shows everything as it should. When I tried to bring up eth0 with ifup eth0, it said that the device is not managed by NetworkManager. I tried to restart nm with service network restart, but it gave this error:

Shutting down loopback interface: Error org.freedesktop.NetworkManagerSettings.InvalidConn ection: ifcfg file ;/etc/sysconfig/network-scripts/ifcfg-lo' unknown

The same error came up for eth0 and Wired_connection_1 (the connection I configured from NM )
When I typed nmcli dev list it gave me:

GENERAL.DEVICE: wlan0
GENERAL.TYPE: 802-11-wireless
GENERAL.DRIVER: ath5k
GENERAL.HWADDR: 00:14:A4:4D:B8:FC
GENERAL.STATE: disconnected
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes

GENERAL.DEVICE: eth0
GENERAL.TYPE: 802-3-ethernet
GENERAL.DRIVER: 8139too
GENERAL.HWADDR: 00:0a:E4:EB:32:E2
GENERAL.STATE: unavailable
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 10 Mb/s
WIRED-PROPERTIES.CARRIER: off

View 2 Replies View Related

CentOS 5 Networking :: Slow System Due To Hostname Loopback Address?

Jan 12, 2010

New CentOS 5.4 system working fine. Sys admins came in and copied the hosts file from one of the servers down to my desktop and ever sincethen machine has been slow (progs take 10-20seconds to load). RunningGnome. Luckily I saved the old hosts file and copied it back and all is now well. But I'd like to understand why, particularly as I will need to change myhostname in the future.

As configured:
/etc/hosts (yes my hostname is "dummyName" that I will need to change later)
127.0.0.1 dummyName localhost.localdomain localhost

[code]....

View 5 Replies View Related

Ubuntu Networking :: Setting Up A Music Server?

Jul 18, 2010

I've been trying to set up a music server and running into some difficulty.

I want to be able to stream music and video to my network and over the internet.

From what I've read so far ampache is what I would like to use but I've yet to find a user friendly guide on how to set it up. I've never set up a server before so all of the guides and documentation have just confused the heck out of me.

View 3 Replies View Related

Networking :: Setting Up DNS For VPS Server?

Feb 20, 2011

I have a vps server on debian linux and nothing else! No panel and no other programs. I want to connect my domain to my server.

View 1 Replies View Related

CentOS 5 Networking :: Add Extra Loopback Adapters Like Windows - For GNS3 Router Emulation

Mar 26, 2009

I have been searching the forums for quite a while, to add extra Loopback adapter in Centos 5.1, but no success! Could you please suggest me the steps? in Windows, it is quite easy to add as many adapters as you want. wondering, if this is even possible in Linux? I have to run GNS3/Dynamips for router emulation and bind those Loopback adapters to virtual routers!

View 5 Replies View Related

Ubuntu Networking :: Setting Up Samba File Server?

Nov 27, 2010

I'm trying to set up an old computer that was donated to my by an aunt to hold my external hard drives and use it as a file server so i can use them from anywhere within my house. However I can not seem to get the samba server to broadcast/be seen by my ubuntu installation, nor my windows installation.

I've read the manual, to an extent, but I feel as if I am missing something. All I want is to have it to where I can just type in \server and bring up my files to access without having to worry about passwords.

Here is the config file:

Code:
[global]
workgroup = WORKGROUP
netbios name = GrenadingBadger
security = share

[Code]....

View 5 Replies View Related

Ubuntu Networking :: Setting Up Web Design Test Server?

Dec 19, 2010

I do not know much at all when it comes to setting up hardware--servers, switches, etc.

I have a 1701HG 2Wire wireless router that I use for my home network. I have an old pentium 3 tower that is just laying around, and I want to be able to host my projects on it for testing. Basically, I just want to be able to do everything on my laptop and then upload it to the server for testing.

I have set up an Ubuntu LAMP server on the desktop and am able to do everything I want via SFTP; however, I want to be able to type in "projectx.local" in a browser on my laptop to go to one test site, "projectz.local" to go to another, etc.

Is this possible, since I do not have the server set up as my gateway? It is merely connected to the router like everything else.

View 2 Replies View Related

Ubuntu Networking :: Setting Up SSH Server (Hamachi Based VPN)

Jan 8, 2011

I recently started to set up a SSH server, I was able to set up a Hamachi based VPN and was able to connect to it on all levels, for about 5 min, after that the server goes into idle mode and is no longer able to connect to that computer via LAN or Hamachi. Not till after I shake the mouse can I connect back in via LAN, and I have to log out and back in of Hamachi to get that to work. Is there a way to stop the Internet shutdown on that computer when it goes into idle mode? SSH servers are more or less useless if it doesn't let me tunnel in when I need to. This is for Ubuntu Server.

View 2 Replies View Related

Ubuntu Networking :: Setting Up A Router And Firewall For 10.10 Server 64-bit?

Jan 28, 2011

post the "perfect" tutorial for setting up a router and firewall for Ubuntu 10.10 Server 64-bit? I'm kind of a n00b when it comes to Linux, so I get really confused with some things, I have seen things on the ubuntu wiki about this... but it really confuses me =

I'm trying to setup my ubuntu sys as a router and firewall... Internet -> Ubuntu (Router) -> Switch (no DHCP on it) -> Computers I've already setup bind and dhcp3 and got those working perfectly... I've also setup Squid3 and Dansguardian for content filtering (blocking ads and such) and got them working too... I want to set it all up to be transparent, and allow the system itself to function as a powerful firewall router, giving absolutely NO issues to client computers connected, and no speed reduction at all.... I want to setup the firewall to allow all outgoing connections, but block everything incoming (stealth the network)... Forcing all http/s traffic to pass through dansguardian, then to squid...

But am very confused on how to pull this off... The system is running Ubuntu 10.10 Server 64-bit, with 4 GB of RAM, 320 GB SSD, and two 1Gb NIC cards... Sorry if I'm not very clear, I do speak english perfectly, but just kinda new to the "Linux world", I was using SONICWALL but that's getting a little too costly to my network and wanna do a free alternative... Something completely CUSTOM, not using some network security distro.

View 1 Replies View Related

Ubuntu Networking :: Proxy Setting Did Not Allow To Connect To Server

Feb 12, 2011

I used windows OS and installed Ubuntu 10.04 (amd64) in separate partition and works well but had a problem in internet connectivity. Likely reason may be the proxy setting that we used in college (currently). I used this commands to set up the IP address and gateway.

ifconfig -a | grep eth
"eth0"
sudo ifconfig eth0 192.168.5.209 netmask 255.255.255.0

[code]....

Then I manually set the proxy setting of HTTP which is given as proxy server 192.168.5.2 and port as 8000, further more there is a wins setting which is 192.168.1.178, really don't know where to put this number.

View 2 Replies View Related

Ubuntu Networking :: Setting Up Rint Server On Xubuntu10.10?

Mar 25, 2011

i need to set up a print server on my network

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved