CentOS 5 Networking :: How To Connect To VPN Using NetworkManager
Dec 9, 2009
I'm using CentOS 5.4. I want to set-up a PPTP connection (I'm the client). I installed the NM pptp plugin from EPEL's repository. I have configured my PPTP connection in the NetworkManager applet but now I don't know how to connect to the server, I mean, there's nothing like 'Connect now'.
I loaded F10 up on my laptop a few nights back. NetworkManager connects via Ethernet just fine. It will also connect wirelessly, but only when security is disabled. I've been using 128-bit WEP.
When I try to connect using security, this is what appears in the log:
Code: Jan 29 21:07:17 localhost NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. Jan 29 21:07:17 localhost NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
I've simple PPTP connection in NetworkManager that is build in with ubuntu, once I disconnect the connection [to change IP or so] the connection won't establish again...
I'm getting a libnotify popup that says "Connection failed because timeout"
I'm getting a good IP, I just can't connect again after 1 disconnect... Any idea why?
Running CentOS 5.5. NetworkManager is able to connect to wifi after logging in as root in the GUI and entering password to unlock keyring. What do I need the change to get NetworkManager to connect the wifi at bootup?
I'm running ubuntu 9.10 with the latest networkmanager (from ppa)I thought this could be wrong credentials setting, so i've tried a huge amount of setups (user: phonenumber, password: phonenumber, avp:telenor, seems to be the general consensus for how it should be)Is there something I'm missing or is there any way I could tail the output as NetworkManager tries to connect (hopefully seeing something like "wrong password" etc.)
i have added a vpn connection on my Lucid desktop machine, but every time i try and connect, it fails. I also have the same, identical vpn connection on my karmic install on my laptop. everything works perfectly on Karmic, but Lucid is having problems. I have followed identical steps for creating the vpn connection on both machines: vpn connections can be made in 2 ways, the first is through the network manager, but trying to connect through the nm-applet returns an error about vpn failing to connect and "no valid vpn secrets".
I suspect this is at the root of the problem. The only way for my Lucid machine to successfully connect through the command line is if I run the openvpn command under sudo.
I have a ZTE 3G USB modem (MF645). When I plug it, 5 devices appear: /dev/ttyUSB[0-4]. The modem device is /dev/ttyUSB2, and I can successfully connect wvdial on it. NetworkManager detects the modem, however, it tries to connect to /dev/ttyUSB1 instead, and fails.
How does NM decides which device to connect to? Is it possible to instruct it to connect to a specific device?
The resolv.conf is not written correctly every time i reboot the machine...it seems to ignore all sysconfig configurations !
this is the resoult resolv.conf after every reboot
# Generated by NetworkManager # No nameservers found; try putting DNS servers into your # ifcfg files in /etc/sysconfig/network-scripts like so: # # DNS1=xxx.xxx.xxx.xxx
I cannot connect my Dell Inspiron 1300 through the NetworkManager "wired" connection, when I try to go direct to the cable modem. It fails to connect.
If I connect the cable modem to my (linksys WRT54GS) wireless router, and then connect my laptop to a wired port in the router, it connects in seconds, successfully.
This has happened to me 2 other times, when I tried to connect my laptop to a client's cable modem, because my client did not have a wireless router available, in their home.
My wireless works fine. This has me perplexed. I'm using Ubuntu 10.04 LTS and NetworkManager Applet 0.8
I've tried some things to see what is going on, such as "ifconfig" "dhclient" as well as modifying the "Auto eth0" parameters and adding my laptop's MAC address, etc. Results were no fix or solution. I feel like I'm headed down the wrong road. Would someone set me straight? I have a feeling this is simpler than I think.
Do I have to actually reset my own or someone's cable modem to get this to work? I don't want to do that unless there's no other way. Is there? Let me know what commands I can or should run.
The auto connect feature of NetworkManager Applet (version 0.7.997) isn't working on my system. If the WiFi connection dies, Network Manager doesn't detect that the connection has been lost and try to reestablish the connection. I have to manually click on the WiFi hotspot to reestablish the connection. This appears to be the case both while the computer is running and when I first boot it up (i.e. when booting, if the first attempt at establishing a WiFi connection doesn't succeed, Network Manager doesn't retry or try another hotspot).Is this "normal" behavior for Network Manager? If not, does anyone know a fix? Here's some more info about my system:
I've been running CentOS on my laptop for a few weeks now. I don't know what happened today, but when I boot up, the NetworkManager wont show up on the panel, and I don't have access to wireless networks or Internet. I tried booting my Windows partition and the wireless works fine. I can't seem to remember any latest change I've made aside from the wallpaper =) Any ideas where I should start debugging? I could see the module "iwl3945" still loaded. Here's a manual type of my lsmod | grep iwl3945
I ran into this today accidentally turned on networkmanager and it took it upon itself to rewrite some things and proceeded to make any DNS lookups on my server Especially those reverse DNS for SSH and SFTP take so long they would just time out instead of completing.. Disabling networkmanager did not undo the damage either. Short fix, Erase your resolv.conf file and add 2 lines to it as so, your nameservers!
nameserver xxx.xxx.xxx.xxx nameserver yyy.yyy.yyy.yyy save, and run the following commands service network restart service httpd restart service sshd restart
Mine had a search line added by networkmanager and some others, when i reverted it back to as above, almost instantly after restarting the services the systems lookups were once again, lightning fast. DNS lookups were taking upwards of 20 seconds for unknown reasons after this happenned
I am experiencing troubles when connecting to my new private network under Linux (works fine with Windows). I cannot get an ip address and the logs tell me a bit more, but I would like to know how to proceed to resolve this issue. My network adapter is an Intel Wifi Link 5100 using the iwlagn driver. Connecting to other WEP APs usually works flawless, it's the first time my system won't connect at all to this particular WEP encrypted access point.
I have installed an OpenVPN server on my OpenWrt 10.03 router [freshly flashed]:
[URL]
It seems "ok".
I connect my pc to the lan port of the router, and i want to try it out. I'm using Fedora 14 with GNOME. In the NetworkManager applet i set these things: this and this. Ok!. i try to connect, but it fails. Here are the logs: [URL]
one important thing: my routers [the one with the openvpn server] ip address is 192.168.1.2, and i didn't had to write it nowhere. so how could the networkmanager applet know the ip address of my openvpn server? i think this is the problem, but i just can't find where to write 192.168.1.2
p.s.: yes, i tried to google for: "No server certificate verification method has been enabled." but i didn't find a thing, and i'm trying for hours now... :
p.s.: if i [on the router]: iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT
I've just upgraded my netbook from Jumping Jalopy, was it? to Karmic Karla 9.10 and I was obviously remiss in not taking note of the various sub-programs, libraries etc, that it was deleting. Now NetworkManager doesn't connect to my wi-fi whereas before it picked up immediately and was as solid as a rock thereafter. This version is apparently 0.7.996 although I cannot see this number on the Synaptic list. My wife's laptop is ok so the problem is on the netbook; I've checked "Edit Connections" and they're both the same.
So presumably the upgrade has removed something NetworkManager needed, but what? I've looked down Synaptic but there's just too much stuff there that I don't understand, likewise an attempt to trawl back through past threads on here. I'm barely computer literate, all assistance very gratefully received! How do I find out what dependencies it's lacking?
I've installed from the CD the Centos version 5.5. When I try to connect to Internet I can't because I received some errors. I've the Intel Corporation 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller also a wireless slot (I've the wireless card DWL-G650+) When I turn on the pc and I go to "Ethernet Device", I see set: peth0 (Intel Corporation 82801CAM (ICH3) PRO/100 VE (LOM) ETHERNET CONTROLLER) and also set "Bind to MAC address": fe:ff:ff:ff:ff:ff I've set manually the IP address (I'm under router). Status is "Active" but can't go on the Net. When I change to "eth0 (Intel EtherExpress/100 driver)...sometimes become "Active" an other times said that the MAC address is different or to check the cable because can't find the IP. What can I do?
I have installed opensuse 11.3 I am unable to connect to my wireless connection.
KNetworkManager finds the connection (when i scan for connections), i can enter the WEP Hex key, it says it is configured. Goes through its "check list" when you click "ok", and all seems good. But it won't connect. When i run "nm-tool" i get:
State: unknown WARNING **: error: could not connect to NetworkManager
I edited values in:
linux-2ys8:/home/sam # vi /var/lib/NetworkManager/NetworkManager.state
to "true"
running rcnetwork restart, output was:
Shutting down network interfaces: eth0 device: Atheros Communications AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0) eth0
[code]....
knetworkmanager(9276): KUniqueApplication: Cannot find the D-Bus session server: "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken."
just did a clean install and update to Maverick, and found that empathy won't connect without internet connection managed by networkmanager (I'm using wvdial to connect to the internet since networkmanager doesn't recognize my modem). it keeps saying 'Offline -- No Network Connection' unless I deactivate and reactivate the account. It's kinda annoying.
for Lucid, there is a simple fix for this condition, [URL]... but now, there is no entry for empathy in gconf-editor after I did the Maverick fresh install.
is there anybody have the same problem and know the solution? I can just install pidgin, but I think it is better to not having redundant apps installed.
I have Fedora 11 x86_64 installed in my pc.this morning i accidentally pressed "remove the network manager icon" from the main panel and now i cannot find ANY way to put it back.in the services the network manager is working.when i plug the ethernet cable i have access thankfully since it was set to automatic before but i cannot select any wireless networks.all my devices eth0 and wlan0 are controlled by the network manager.i tried to uninstall it and install it back through yum (i know it is what a windows user would do) and nothing still.
Some month ago i bought a UMTS / HSDPA Stick "HUAWEI Mobile Connect E160". I worried about getting it running with Ubuntu, but it was freaking easy to get it running. Even less complicated than installing the same device with windows.
It worked some month without any problem and then suddenly, didnt work any more. If i plug the device to my laptop (lenovo x61) unter linux now, i still can click to start the mobile broadband, it trys to connect some time, but shows "disonnected" at the end (dont know the exact message in englisch, because i use german language prompts). The same device still works fine with same hardware with windows vista at all 3 usb ports. I deleted the mobile broadband settings couples of times and made a new one, without any effect to the behavior.
I just installed CentOS 5.2 and then applied the updates to 5.3. Now I get repeated popups saying:
The NetworkManager applet could not find some required resources. It cannot continue.
I killed it and ran it from a terminal and saw the following output:
** (nm-applet:4648): WARNING **: Icon nm-device-wwan missing: Icon 'nm-device-wwan' not present in theme ** (nm-applet:4648): WARNING **: No connections defined
I was having a problem with cairo dock, asked on the board how to resolve was told to reinstall the visual driver for my monitor since I have an ati vid card since with the updated kernal u have to reinstall those drivers(didn't know that, I'm new to opensuse). I thought I did that before so I completely uninstalled it so I could then do a fresh reinstall but I wasn't paying attention and my laptop was unplugged for a while. I stepped away while the install was going on and my laptop died.
I tried plugging it in but had to restart my laptop when I did I got the command line rows and when I tried to start GDM it wouldn't start, I did so as SU. Attempted to connect to the internet via networkmanager and couldn't get wifi or wired to work. Anyway I can access my desktop visually just so I can start yast and install the driver or will I have to reinstall 11.2 or use the cd to repair? If so how do I use the cd to repair?
i just finished installing CentOS 5 in my laptop. While I was trying to configure my Wireless network to connect internet, I found a guide in CentOS site which recommended to start "NetworkManger" service so as to setup wireless network. I followed and it Worked great.
But i would like to understand the difference between "Network" service and "NetworkManager" service. I had initially thought restarting "Network" service would help. explaining the basic difference between these 2 services.
i bought a vps last week. I wanna if it is possible that the only connection on my computer will be to the vps(i wont be able to connect directly to the internet for example) and if i want to connect to the internet it will be through the vps . i wanna use ssh and especially iptables(and not the proxy of the browser)