Ubuntu Networking :: Point To Point Tunneling Server Connection Errors?
Mar 28, 2011
I recently installed the pptpd server on my system and set it up according to these instructions:HTML Code[URL]t=132029However after setting everything up on attempting to connect to it from a windows machine (windows 7 home premium to be specific) it gives me two errors which are 720 and 800...It reaches "registering your computer on the network" fine and then gives 720 on the first attempt to connect and then 800 on the second attempt to connect...and then on the third 720 and 4th 800 and so on..My system running the server's I.P is 192.168.1.70My system running the windows OS trying to connects I.P is: 192.168.1.66
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Aug 27, 2009
This one has been driving me nuts for some days now:My Gentoo box which is acting as an internet gateway has two point-to-point interfaces, ppp0 (PPPoE to my ISP) and ppp1 (PPTP VPN link to IPREDator). Packets from my local network are just routed through ppp0 and now the fun part starts: I want to MARK (netfilter...) all packets originating from one specific user on that box in order to use another routing table that will contain a default route via the ppp1 interface.Marking seems to work fine as does the second routing table. But quite mysteriously (at least for me), the packets sent out on ppp1 contain the wrong source IP address, namely the address associated with ppp0.So here is what ifconfig and friends tell me:Network interfaces:
Code:
# ifconfig ppp0
ppp0 Protokoll:Punkt-zu-Punkt Verbindung
[code]...
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Jun 3, 2010
I was wondering if there is any way to SSH from one computer to another and completely bypass a router or any other network infrastructure. The reason I ask is because my robot ( same one in this post ) often needs to change which wireless network it automatically connects to, however it is getting annoying to have to drag out a monitor and plug it in along with a keyboard and mouse every time this needs to happen. Instead I'd much rather just plug my laptop into the other computer, SSH in and change the network myself.
So I thought I would ask you kind people if this is possible. The robot's computer has unused ethernet and USB ports, and I'd like to use those if at all possible (and with linux, anything is possible! -- sorta). I thought about doing something with ad-hoc, but this would limit my range (in infrastructure mode I can control the thing anywhere there is internet), and is to be avoided.
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Apr 26, 2011
10.04 in a couple of identical lenovo laptops (of friends) suddenly have stopped connecting successfully to wireless, coinciding approximately with a mains power socket fail at the modem router, now fixed. presumably the machines were trying to connect to the access point, which may or may not have been working, but themodem router was not. Now, internet connection and wireless access point is fixed ok and is back up, and i can connect wirelessly to the access point ok using an eeepc with 10.04.2 with no problem so the access point is working ok
the target laptop/s are still ok via wired ethernet, and can *also* connect to a neighbours open wireless (a british telecom so called fon network, it asks for an account password), and all local wireless networks can be seen normally, and the home access point ssid can also be seen ok. so the aptop wireless is connecting ok, but not to this particular access point now. maybe someting has got screwed up? it is wpa2 and when clicked, after a long-ish time, the authentication is requested, then given, correctly, and still not connecting, asks for authentication again etc etc. no local secure wallet is being used.
when upgrading these laptops for my friend some time ago from 9.04 i have a small recall that 10.04 had a odd thing with wireless authentication (?) bug? i have deleted the network connections gui listing for this ssid and restarted the laptop, still no joy.
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Aug 19, 2010
I have Ubuntu command line only installed on my HTPC (it is XBMC Live installation). Kernel is 2.6.31-16-generic. My wi-fi card is AW-NE770 from AzureWave (mini-pci on Zotac Atom motherboard). I have successfully configured wireless connection to my router. Unfortunately, after short period of time connection drops. When I restart /etc/network/interfaces all goes back to normal. When connection is dropped, iwconfig shows that access point is not assigned. I have already tried installing backport drivers, removing security on the network (WEP and WPA), assigning static IP or using DHCP. Nothing works. I know it is not the router or my internet because I can be at the same time on my laptop and that works fine.
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Jun 26, 2011
I am trying to figure out how I can see which access point my wireless card is connected to. I have a slackware system and. Basically, I know my card is connected to something, because firefox can do a google search, but I'm not sure what network it is connected to, since there are a couple open networks in my apt complex. Is there a command to list the ssid? that I'm connect to? and, I'm new to all this so I'm not sure if ssid is the correct term. I have a consumer grade netgear wireless "router" that I bought from bestbuy which has a "passphrase".
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Jan 15, 2010
Ive spent the last couple of days looking for a way to set this up and cant find the solution anywhere. Right from what iv read so far i understand i have to set the card to master mode but when i try
Code:
sudo iwconfig wlan0 mode master
i get the error
Code:
Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Invalid argument.I read somewhere that the madwifi driver is up to the task but im still quite new to linux and not really sure how to change the drivers. this is what iv done so far
Code:
wget http://snapshots.madwifi-project.org/madwifi-trunk-current.tar.gz
tar xvxf madwifi-trunk-current.tar.gz
cd madwifi-trunk-r4108-20100115/
sudo make
[code].....
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Apr 2, 2011
I'm trying to setup my ubuntu server as an access point but am running into some issues.
The server has an Atheros wireless card (AR5008 chipset) and I have used the following link to set it up in master mode using madwifi drivers: [URL]
I then used this link to set it upas an access point using hostapd. [URL]
But inspite of following the above steps, other wireless clients in my LAN are unable to see the ssid "Linuxmaster"
Although iwconfig shows that the card is in master mode.
iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"Linuxmaster"
[Code].....
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Dec 7, 2009
I'm running CentOS 5.4.In the last three days I've started to get various cron errors:
/bin/sh: line 1: 7066 Segmentation fault /usr/local/scripts/cron.email.sshd.access/cron.email.sshd.access.pl
/bin/sh: line 1: 4822 Floating point exceptionsudo -u mobile getmail --quiet
Can't load '/usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi/auto/RRDs/RRDs.so'
[code]...
Then yesterday I rebooted, and all the other errors seemed to have disappeared for now, but, I am now getting:
/bin/sh: line 1: 23600 Segmentation fault sudo -u mobile getmail --quiet
I have setup cron to call getmail once every 3 minutes, and I get this error about 4-6 times an hour.
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Jan 8, 2010
I have a new server running on xubuntu 9.10 behind a "Check Point Safe @ Office security appliance" (a LAN switch with an obnoxious firewall), and cannot make ssh, ftp, telnet, or vnc connections to it from outside the network. All I get are "connection refused" errors. I've made sure sshd, x11vnc, and proFTPd are running when I test the connections, and that ufw (firewall) has all of their default ports completely unrestricted. I've set a rule on the router to allow and forward all connections and all ports to the server, and I've also also put it on the exposed machines list, which reads like it should provide full access to any incoming connection. I still can't make connections to it, and it's driving me nuts. Does anyone have suggestions (or requests for more information)?
(ps- The router isn't really a choice: even if I bought another, I'd have to hide it and hope no one notices the policy breach)
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Feb 25, 2010
I was thinking about setting up my own mail server. Problem is my ISP will not let me have a static IP unless I upgrade to a Business class service which is just too expensive for home use. As a work around I use a DDNS service from Dlink, which is actually done via DYNDNS.com. So essentially I have mydomain.dlinkddns.com point to my Dynamic WAN IP, and it is all automatically managed by my router.
Is there a way I can haveoint to my mail server without it being a subdomain of my DDNS om)? In other words I would like to have the email someone@mymaildomain.com and not have it be dlinkddns.com or something like that. I know someone has done it, I just have never done it. Not quite sure what to google to find the answer myself either.
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Apr 3, 2010
I installed the driver for my network card. iwconfig and ifconfig are all responsive to connecting to the network, I'm given an access point address. Then, I try to connect to a website and no dice. ping www.google.com yields no result. What gives?
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Mar 3, 2010
I have just purchased my first Linux PC - up to now I have always rolled my own so to speak. It is a little Dell Latitude 2100 which I got a good deal on through the outlet store - a refurb but it looks new. Ubuntu 9.04. It has built in wireless and I have gotten it to talk to my D-Link router although only with WEP and not yet WPA - that will come later.
When is the wireless connection supposed to occur? If I reboot the PC and watch for it to connect (using ping from another machine on the network) it does not appear until I login to it. It remains on the network after I logout(?) Is this normal? I am used to hard wired machines which come up on the network before a user logs in. Is there something I need to change in the network connection settings?
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Aug 16, 2010
I have successfully set up a cable internet connection in Ubuntu (created a new DSL connection by typing login and password and connected the cable - it worked). But I have no idea how I can set up a wireless internet connection.I have a wireless access point TL-WA501G, laptop and a cable internet connection with fixed IP address.My laptop can see the wireless access point. But I really do not know how to make it all work and what to start from.
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Jun 10, 2010
I own a server with Centos 64bit and Cpanel on it and i add a second disk and move mysql there:
cp -r /var/lib/mysql/* /newdisk/mysql/
Now i want to edit my.cnf and point it to the new path but i don't know what to add there
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Aug 26, 2010
I am thinking of getting a domain name or ten I do not know were to point the domain to?
and what do I need to setup if a user wants a domain name to point to his account on the server? ok more like I want to have a few domains pointing to my user accounts I have setup on the server..can I do this directly or do I need a server domain first before users can get a domain name?
I have a basic setup user web space and ftp and mysql setup
what extra would I have to install or not to be able to get a domain pointed to my server and/or user accounts?
I don't seem to be able to find anything specific on how to set this up anywhere.
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Mar 15, 2016
I have a production server to which you need to be approached with caution. I have to update the 107 packets between other kernel php and several libraries.
This is the first production server on such a scale, and he did not want me to get something went wrong. And if you can make a restore point after installation so that if it does not start I will be able to restore support the package versions?
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Aug 23, 2010
I built a Suse Linux server on vmware. I attached an RDM to the server and can now see the drive as a "Mass Storage Drive" in Applications - computer. When I double click on the icon, I get an error message that indicates that the drive can not be mounted. I tried to mount in gnome terminal using: mount /dev/sdb and get "can't find .dev/sdb in /etc/fstab or /etc/mtab". I tried adding device that I would like to mount to fstab, but don't think I have the settings correct. I looking for any info that might step me through the process.
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Nov 7, 2010
i have made a website and i want to use it in my lan.it is working with ip address but i want to use name convention.dns server is working correctly.my server ip is 192.168.0.254 and sample website is [URL] computers in my lan can open it using http://192.168.0.254 but not by [URL] what things i need to edit in named.conf file and in forward zone and reverse zone files?
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May 28, 2010
In my production setup, i have 3 servers using the same mount point. However, i see that the IOPS is low. Does this kind of architecture have any impact on IOPS. In case it is neutral, how can i tune my setup for better IOPS.
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Jan 22, 2010
i have an AP set up and would like to have all requests for a website sent to a specific ip address.. and am trying to get this to work in IP tables
user-->AP-->google.com
no matter what site they try to goto it takes them to [URL] i want to use this to require people to login to my server when they connect to my AP before they can go any further.
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May 11, 2010
Where are the mount points for smb shares connected via "Places -> Connect to Server"? I assumed them in one of the usual places like
/mnt
or
/media
but these folders are both empty. There are a couple of applications which are not capable of accessing my shares because i can't navigate to the right location...
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Jul 7, 2010
I have a wireless network in my house through a Zyxel P-320W router, and I've noticing that the signal strength isn't very good in the basement. Now I have this old D-Link-624+ router lying around for a long time and I've been hoping to get it to work as an access point, that way I can move freely around the house without changing which router I'm connected to.
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May 21, 2011
i'm using stuido 10.10 and am trying to get wireless to work. i've used Network Settings to enable the wireless connection with correct ESSID and Network Password, though when i type iwconfig it says Access Point: Not-Associated.how do i associate with the AP?
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Feb 14, 2011
I'm trying to ssh into my Ubuntu box, but the connection is getting denied.
When I look at /var/log/auth.log, I see the following:
Code:
I googled for this, and ran across the following: [url]
Here's the part that I think relates to the problem that I'm having:
Quote:
It's not clear from context which configuration file needs to be edited, and I'm not at all familiar with SELinux configuration.
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Mar 28, 2010
I have a local computer (local), and remote computer (remote) behind of remote server (server). Also, I have user access to all of these 3 machines. Now, I want mount some directory, located at remote, to my local mount-point via sshfs. How should I setup my local sshfs and what should be done on server to make this mounting?
I'm stuck with ssh tunneling because the default method for tunneling requires root access while WinSCP somehow could do this with only user access (the tunnel server could be configured there in 'tunnel' panel).
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Sep 4, 2010
I am trying to point my domain to my server with a static IP address. My domain is registered with Network Solutions and they ask "Primary and Secondary DNS" settings in their setup. What primary and secondary DNS settings I need to give when I have a dedicated server with static single IP address with BIND installed.
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Jan 13, 2010
I have a Sonicwall access point, which I am able to set up through the interface, but after that I am unable to achieve a connection through my wireless card. I have a good understanding of everything involved, but really have no hands on experience when it comes to networking.
Code:
lspci
00:00.0 Host bridge: Silicon Integrated Systems [SiS] 735 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP)
[code]....
Also, I should have mentioned that @ the interface for the Sonicwall it said that "no DNS server had been specified", but I set it up for DHCP, and I thought my ISP is using PPPoE (which I also thought used DHCP).
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Mar 25, 2010
i've finish install driver for my wireless adapter and the result like this:
Code:
rapc0d@rapc0d-laptop:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
[Code].....
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Apr 15, 2010
I just installed the wicd network manager and when i was setting it up it said it couldn't find the ip address so when i input the address its saying it can't connect to a wireless access point. I am using wireless that has worked with the default network manager but will not work with this one.
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