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Tunnel Device Open Failed. Could Not Request Tunnel Forwarding.


Last login: Tue Jul 20 18:50:33 2010 from bronzehip.wifi.wpi.edu Linux ...SNIP... Page 1 of 2 12 Last Jump to page: Results 1 to 10 of 11 Thread: SSH VPN not working Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Reply With Quote 26-Oct-2009,18:13 #8 hendersj View Profile View Forum Posts View Blog Entries View Articles Administrator Join Date Jul 2008 Location Bellevue, WA Posts 16,282 Re: SSH VPN not working How can we get our son to stop sleeping in our bed? http://chatflow.net/failed-to/xsane-failed-to-open-device-error-during-device-i-o.html

Registration is quick, simple and absolutely free. Not relevant to your particular command, but somewhat relevant to this topic as well, is the PermitTunnel option if you're attempting to use the -w option. [1] Full syntax in the Still, that's probably not the problem. Code: [16:54:29][email protected]:~$ sudo ssh -vvvw 0:0 97.**.***.221 -i VPN [sudo] password for casey: OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2:

Tunnel Device Open Failed. Could Not Request Tunnel Forwarding.

Visit the following links: Site Howto | Site FAQ | Sitemap | Register Now If you have any problems with the registration process or your account login, please contact us. Ideally you want to log in as a regular user, then use sudo to run whatever script or program. You will find in answers below the most common actual causes. –Stéphane Gourichon Jan 31 '15 at 7:49 add a comment| 19 Answers 19 active oldest votes up vote 73 down

  1. It should not prompt you for password authentication (unless you've set one in ssh-keygen).
  2. channel 0: open failed: administratively prohibited: open failed debug2: callback start debug2: client_session2_setup: id 1 debug2: channel 1: request pty-req confirm 1 debug1: Sending environment.
  3. This is what is being blocked.
  4. Connected to www.google.com.
  5. Opening too many (whatever it means, in my case ~20 connections) yields this message.
  6. Not sure why that would be.

Rather, In am using -w to create tun interfaces. debug3: timeout: 499999 ms remain after connect debug1: identity file /home/UserName/.ssh/id_rsa type -1 debug1: identity file /home/UserName/.ssh/id_rsa-cert type -1 debug1: identity file /home/UserName/.ssh/id_dsa type -1 debug1: identity file /home/UserName/.ssh/id_dsa-cert type -1 Yes. Confusion in fraction notation more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts

Adv Reply January 18th, 2010 #2 Lars Nood幯 View Profile View Forum Posts Private Message Visit Homepage Ubuntu Member Join Date Sep 2006 Beans 8,627 DistroUbuntu 14.04 Trusty Tahr Server Sys_tun_open: Failed To Configure Tunnel (mode 1): Operation Not Permitted When I run the following command in the Terminal; ssh -v -L 10005:localhost:10000 [email protected]_ip_address -F ~/.ssh_config -i ~/.ssh/private_key_file_name after 'Authentication succeeded (publickey)' I get the following for channel 1; sys_tun_open: failed The -w switch on ssh will do what we need, and create a tunnel network interface on both computers. If you're curious, you can also check the default route to somewhere like Google by using the traceroute utility.

IPv6 addresses can be specified by enclosing the address in square brackets. [email protected]:~$ Last edited by wingman358; 07-21-2010 at 04:58 PM. jefro View Public Profile View LQ Blog View Review Entries View HCL Entries Find More Posts by jefro 07-21-2010, 04:42 PM #4 wingman358 Member Registered: Mar 2008 Location: Northeast However, because sys_tun_open failed, I am concerned that the transactions may not be encrypted as I understand they would be in proper tunnelling - I am very new to this so

Sys_tun_open: Failed To Configure Tunnel (mode 1): Operation Not Permitted

Setting up the routing Server setup Ensure that the tun0 interface is not restricted:
server:~# iptables -A INPUT -i tun0 -j ACCEPT
server:~# iptables -A OUTPUT -o tun0 -j ACCEPT

One small glitch - exit no longer breaks the connection. http://chatflow.net/failed-to/failed-to-open-waveform-output-device-r4.html There will be significant overhead as all the traffic is encapsulated into SSH and encrypted. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/opt/sbin:/opt/bin:/usr/sbin:/usr/bin:/sbin:/ bin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify debug2: callback start debug2: fd 3 setting TCP_NODELAY debug3: packet_set_tos: set IP_TOS 0x10 debug2: client_session2_setup: id 2 debug2: channel 2: request pty-req confirm 1 debug1: Sending environment. Ssh Tunneling

By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. The message is generated when the host cannot serve the request. share|improve this answer edited Aug 20 '13 at 7:18 Anthon 48.9k1464128 answered Aug 20 '13 at 7:01 jacquesjtheron 10112 You may also see the same error when using -D Check This Out Try turning the client firewall off.

If anyone knows, they are more than welcome to share. –clacke Jul 17 '13 at 0:55 1 clacke: according to bugs.debian.org/cgi-bin/bugreport.cgi?bug=546854 you can add a MaxSession parameter in /etc/ssh/sshd_config file Hesab覺mAramaHaritalarYouTubePlayHaberlerGmailDriveTakvimGoogle+eviriFotoraflarDaha fazlas覺C羹zdanDok羹manlarBloggerKiilerHangoutsGoogle'a ait daha da fazla uygulamaOturum a癟覺nGizli alanlarGruplar覺 veya mesajlar覺 ara current community chat Unix & Linux Unix & Linux Meta your communities Sign up or log in to share|improve this answer answered Oct 4 '13 at 14:34 Leonardo Brunnet 111 add a comment| up vote 1 down vote I had this problem when trying to connect via SSH with

Not sure if it helps, though.

What I understand here is that administratively means "due to a specific configuration on server side". How do I create armor for a physically weak species? It might help to see the sshd_config file then - with any identifying information obscured for security purposes. And as a side note IMHO ssh might be the wrong solution to make a Webserver available on multiple ports. –Marcel G Jun 3 '11 at 9:16 9 I found

Powered by Blogger. Encryption in the 19th century Does SQL Server cache the result of a multi-statement table-valued function? Troubleshooting I can't see a tun0 interface! http://chatflow.net/failed-to/dnet-failed-to-open-device-eth0.html What shell is running on the remote account?

Only the superuser can forward privileged ports.