Ubuntu Networking :: Using The Ipredator On 10.04?
Jun 30, 2010use Ipredator on Ubuntu 10.04? how to set up Ipredator on Ubuntu
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Ubuntu Networking :: Connecting Multiple PCs On IPREDator?
Apr 10, 2010I recently signed up for the IPREDator service, and one limitation I've found is that having 2 computers I cannot have both of them connected at the same time. So, I decided to have 1 of them connected (my 'server'), and have the other route all of its traffic over the 'servers' VPN.
My server connects to the IPREDator VPN on interface ppp0.
My server will allocate ppp1 for the VPN from my client.
My server's LAN address is 192.168.1.1.
My client's LAN address is 192.168.1.2.
On the server perform the following...
Code:
sudo apt-get install pptpd
Modify /etc/pptpd.conf to have the following options:
Code:
option /etc/ppp/pptpd-options
logwtmp
localip 192.168.1.1
remoteip 192.168.1.100
[code]....
We need to restart the PPTPD and Networking on the server (I would just restart the server). Make sure you connect to the IPREDator VPN on the server first (otherwise ppp0 won't be assigned to it).Click Network Manager, VPN Connections click on your new VPN.
You should be prompted for your password (default in this guide is just 'password'). You should now be connected via PPTP to your server, which is in turn connected to the IPREDator VPN, and all of your traffic should be tunnelled as such.I've probably made a ton of mistakes in this guide, and there's no doubt a hundred different ways to make this more elegant.
Ubuntu Servers :: HOW TO Be In Two Places At Once A.k.a Ipredator Independent Of The Default Route
May 4, 2010I have a home server running Lucid which basically runs our home lan, but I also wanted to be able to run transmission-daemon over an ipredator VPN connection completely independently of the ethernet port (as far as the application layer is concerned anyway). Most of the howtos for setting up VPN use the VPN as the default route, however I still wanted to run a webserver, dnsmasq etc, not to mention free bandwidth access to my ISP etc.
Thus, this howto. The ppp connection still tunnels through eth0, but as far everthing else is concerned my server has two independent network ports eth0 and ppp0 and applications use the default route via eth0 to our router unless explicitely directed down pppX. I assume that you already have transmission-daemon installed.
[Code].....
Fedora :: Setup - And IPredator With Custom Routing
Sep 1, 2009Background: Took a while to get this working correctly, so figured I'd save you all some time... I (finally) received the beta invite from iPredator. I wasn't happy with the NetworkManager-pptp implementation, I'm running the stock kernel, I stopped the NetworkManager service at this point.
Goals:
1. To be able to control the PPTP tunnel from a remote location over ssh
2. To have services I run from my box accessible via my public IP on the internet (sshd, httpd etc) whilst the tunnel is up
3. To route all Torrent traffic from Vuze out of the encrypted PPTP tunnel, and have it return over that interface
4. To route all other traffic, by default, to my ISP unencrypted
5. To block all Vuze traffic if the tunnel is down
Method:1. PPP config
First, I entered my login details (altered in the below output, of course!!) into chap-secrets and then used "chmod 600 chap-secrets" to make it read/write for root only:
Next, I created a peer file (644 permissions) for the VPN connection, the file name has to match the "iPred" I used above:
I stuck with the defaults in /etc/ppp/options.pptp
To initiate the tunnel, I use: pppd call iPred mtu 1435 mru 1435 persist nolog
Regarding the options used... I'll get onto the MTU/MRU later, persist has the tunnel attempt to reconnect 10 times if it drops, nolog reduces the high volume of syslog messages. The logs for the connection process are written to /var/log/messages, interface ppp0 was created and routing entries were set up (internal network stuff has been cut out below; we'll call 192.168.100.104 my WAN IP, though I've got a static internet-routable IP and wanted to mask it here). The (dynamic) endpoint of the tunnel is 93.182.164.2: you need two routes to this, one via eth0 (my WAN interface) for internet routing of the encrypted packets, and one through the tunnel itself to tunnel and encrypt the traffic:
References:[url] [url]
2. Firewall Setup
I'm a "belt-and-braces" kinda guy ("belt-and-suspenders" if you're from the US), and I've got a custom firewall setup. As I've brought a new interface into the equation, I needed to add some rules.
In order, the rules:
A. NAT the outgoing packets to the ppp0 interface IP
B. Allow established sessions back in
C. Allow the default ports for Vuze through, even if unsolicited, on port 63255 (TCP and UDP)
D. Drop traffic that originates from Vuze (identified by the IP of interface lo:0, which we'll see later) if it tries to exit via eth0 (useful if the tunnel drops or hasn't yet been started)
You can view the rules in place by issuing: iptables -nL
References:man iptables [url]
3. Routing Setup
Obviously, I didn't know who the Vuze peers are going to be and setting a default route via ppp0 means that all traffic would be encrypted. Instead, I created a new, distinct, routing table called IPRED in iproute.
Then I added a default route, via ppp0, into the IPRED routing table and checked that it was there:
The main (default) routing table is still there and has it's routes:
4. Traffic Identification
I tried setting the DSCP (ToS) in Vuze, but that didn't make it into the packets (checking the output packets with Wireshark). So, I created a new Loopback interface lo:0 on my box (later I entered this line into /etc/rc.local so it'll survive a reboot):
I then added a rule to pass traffic from this new lo:0 IP to the IPRED table:
There are a number of other ways to pick out traffic with "ip rule", but this seemed the most elegant solution in this situation.
5. Vuze Config
I looked down the list for the local IP addresses, then bound Vuze to the lo:0 interface which, in Vuze, is lo[1]
Whilst in here, I also dropped the Line MTU to 1435. You'll notice that this matches the MTU and MRU set when using pppd to establish the tunnel... I'm on DSL and have the MTU set to 1478 for the DSL link, the difference between the 1478 and 1435 is the overhead of the additional headers used with PPTP tunnelling (both PPP and GRE headers encapsulate the packets). With the MTUs set up in this way, I shouldn't get any fragmentation of packets on the link, packets with the DontFragment bit set shouldn't get dropped. I gave Vuze a restart.
6. Verifying Operation
I closed any apps that were using the internet, fired up Vuze, loaded a torrent, then opened two Wireshark windows.... Started Wireshark#1 on the eth0 WAN interface and Wireshark#2 on the ppp0 tunnel interface. I saw a long list of PPP and GRE packets (in white) scrolling on the eth0 window, showing that Vuze is going through the tunnel. Checking the ppp0 Wireshark window, I saw the actual Vuze traffic on the ppp0, with SYN's, ACK's, http packets etc as it's being sent down/back through the tunnel.
Starting firefox and visiting www.whatismyip.com, the IP reported was my eth0 address, I saw the http traffic on Wireshark on eth0. Starting e-mail, I saw the packets on eth0.
Dropping the tunnel, I checked Vuze, saw that torrents had stopped and confirmed that I couldn't connect to the net with it.
7. DNATing
Reconnecting everything, I sat and watched the Wireshark outputs on ppp0 and eth0 for a while to make sure everything was working. I noticed that the ppp0 interface was creating a lot of ARP requests for external IP's and sending them out, unencrypted, through eth0 - BAD news!! I'd forgotten that I would need to Destination NAT the unsolicited inbound connections... D'Oh!
As the unsolicited inbound connections are directed at the internet-routable tunnel IP of ppp0, we need to point these to the lo:0 interface that Vuze is listening on. Replies to these will be NAT'd back to the ppp0 address by the MASQUERADE rule we've already entered in iptables and, since the source IP will 172.27.72.64, the packets will match the ip rule pointing them to the IPRED routing table, thus they won't generate ARP requests.
Retrying everything with the firewall updated, everything is working 100% :-D
8. Misc
As the iptables rules have been saved, and lo:0 will survive a reboot in /etc/rc.local, the only commands that need to be run each time you want to bring up the tunnel are (easily scripted with a sleep statement of about 10 seconds after pppd call...):
And, if you wanted to just send all traffic over ppp0, this would be:
Conclusion: I love Linux, an intellectual challenge, having complete control over my PC; iPredator rocks and I hope this howto is of use to anyone running Fedora and iPredator :-D
Ubuntu Networking :: Find Directions On Networking Two Computers Together In Order To Share Files?
Nov 20, 2010I am having a heck of a time trying to find directions on networking my two computers together in order to share files. I have two machines running Ubuntu 10.10 Desktop & Netbook remix.
They are both connected to my wireless router to connect to the internet.
Ubuntu Networking :: Error Appearsubu@ubu-AOD255E:~$ Sudo /etc/init.d/networking Restart?
May 21, 2011trying to bond two 3G modems but I cant Im really new in this matther so I really This is the error that appears
ubu@ubu-AOD255E:~$ sudo /etc/init.d/networking restart
* Reconfiguring network interfaces... Ignoring unknown interface ppp0=ppp0.
[code]....
Ubuntu Networking :: Cable Modem Networking - Can't Connect To Each Other On The Home Network
Feb 14, 2010I just got connected to Charter Cable Internet service a few days ago and I'm having a weird problem with my home network. Prior to this my network worked fine. On my network I have a desktop running Ubuntu 9.10/64 and Virtualbox with WinXP installed, an HTPC with Ubuntu 9.10/32 installed and a laptop dual booted with Ubuntu 9.10/32 and WinXP. The desktop and HTPC are hard wired to a wireless router and the laptop is wireless. The cable modem is hard wired to the router. I have samba installed and UFW is disabled. The problem is: with the cable modem turned off or on standby, all machines connect to each other and can transfer files, etc just fine but when I activate the cable modem all of the machines can connect to the Internet but the machines running Ubuntu can't connect to each other on the home network. If I boot the laptop into Windows, it can connect to the Linux machines just fine but if I boot it into Linux, it won't connect to the Linux machines but it can connect to the Internet and as far as the desktop, Ubuntu won't connect to the network but Windows running in the Virtualbox with bridged networking can connect to all of the machines.
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I have 2 ethernet cards in it. So now i wonder, should i the second card into a router's modem/wan port and make the router a switch? or should i plug it into one of the routers lan ports?
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Apr 9, 2010I have 3 Dell Precision M4400 machines. After getting updates yesterday or today, I get random network dropouts like crazy, on wired or wireless. On one machine I was able to turn off ipv6 in grub and reboot, and it works now. However on the other 2 machines, still have the same problems. All 3 are running 9.10 64 bit. Is there a way I can back out the updates so the network works again? Anyone else see this behavior after updates today?
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PS: when I try sudo ndisgtk it comes up with command not found.
Ubuntu Networking :: Wired Networking Not Working At Work - Fine At Home ?
Aug 24, 2010I just started having a problem with my 10.04 laptop a few days ago, maybe Thursday, last week. When the computer is plugged into my home network (standard 192.168.1.1 sort of IPs) it works fine, but when I try to connect to my work network (130.15.90.XX) I am unable to pick up an IP. The router in my office is working fine, all the windows boxes can connect.
I've also noticed that when the computer is plugged in at work the notification icon for the networking indicates it is looking for a wireless connection (rather than the normal up/down arrows), even if wireless is deactivated
I can set a static IP in /etc/network/interfaces and everything works, so it seems to be a DHCP problem?
Ubuntu Networking :: Wireless Networking On Packard Bell Easynote Tn36
Nov 7, 2010I'm using a Packard Bell Easynote Tn36 laptop, and I'm having trouble with Ubuntu 10.10 and the wireless network card, (probably because of lack of driver). I.e. it is disabled.
How can I enable it?
I input this code:
And here is the output:
Ubuntu Networking :: Network Manager Applet Enable Networking Unchecked
Apr 2, 2011Whenever I start up my laptop i do not get a wireless connection automatically. I have to rightclick network manager applet and select enable networking. After that everything works fine untill i shutdown and restart my laptop. I would like a way to change this so that my wifi connection is working whithout having to click something first..
OS:Xubuntu 10.04 LTS!
hardware: dell inspiron 6000
nm applet: 0.8.?
Ubuntu Networking :: Dual Ethernet Networking - Lose Internet Connectivity?
Apr 18, 2011I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
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ping just drops out. edit: weirdest thing! I just retried and now can not emulate the problem for internode. freebsd still won't show. that is less than five minutes between problems and resolution! I hadn't even posted! But I still would like to have an idea of what is going on. Here is the ping error for freebsd: Quote:
[Code]...
Networking :: Networking Is Not Getting Out Of The Dosbox Instance \ Needs To Have Some Config In Place To Link Networking Over To Dosbox?
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Ubuntu Networking :: Startup Networking Automatically Using /etc/network/interfaces
Jul 2, 2010I'm on an embedded system that doesn't have Gnome, and I'm trying to startup networking automatically using /etc/network/interfaces. Here's what I have.
[Code]....
eth0 comes up just fine. wlan0 comes up, but it's unable to acquire a DHCP address. I added the following lines to /etc/rc.local, and wlan0 comes up all the way, but I'm not too crazy about this hack.
[Code]....
Ubuntu Networking :: Networking Connections Not Listed In Network Manager
Aug 23, 2010Neither of my wired network connections are listed in the network manager applet. I know that networking seems to be functional since I can ping local devices on the network. I can't resolve DNS names however. I suppose this is because network manager usually handles DNS? I've posted the outputs of various configurations below.
Code:
/etc/NetworkManager/nm-system-settings.cfg
# This file is installed into /etc/NetworkManager, and is loaded by
# NetworkManager by default. To override, specify: '--config file'
# during NM startup. This can be done by appending to DAEMON_OPTS in
[code]....
Ubuntu Networking :: Sudo /etc/init.d/networking Restart For Karmic?
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Jun 1, 2011I just installed Ubuntu 11.04 desktop on my desktop in dual boot with Windows 7.
Heres my problem, I am unable to connect to the Internet even though my wired Ethernet connection says it is connected normally. The wierd thing about this is that I also have a wireless card in my desktop and when I connect through that I am able to connect to the Internet. I am connecting to a router that is functioning as a repeater to my main router/cable modem. I have tried to solve this myself but am having no luck. Ironically, earlier today suddenly my ethernet connection worked for a few minutes without me modifying anything.
The output of some terminal commands are below.
Quote:
Quote:
Quote:
However a pint to that ip address (my router) is successful.
Quote:
Hosts.allow and hosts.deny are both fine (not blank but no entries)