search for: x11forwarding

Nico Kadel-Garcia <nkadel at gmail.com> writes: > Dag-Erling Sm?rgrav <des at des.no> writes: > > Some OS distributions (FreeBSD, RHEL / CentOS, probably Fedora) have > > X11Forwarding enabled by default. > I'm not sure I see your point. With X11Forwarding off by default, one would assume that it is only enabled on a case-by-case basis for users or groups who already have the necessary privileges to run arbitrary code on the server and therefore have nothing to gain from...

What has to be installed on a host for it to do X11Forwarding in SSH? My (FreeBSD) workstation at home is behind NAT. From home, I can SSH to a FreeBSD firewall at work, and from there I can get to other hosts around the internal network there, some of which run X clients. Does X have to be installed *on the firewall* for me to forward X11 connections from...

On 08/10/2017 23:32, Michael Felt wrote: > On 04/10/2017 11:07, Michael Felt wrote: >> I do not often use X11 - but when I do I prefer to enable >> X11forwarding, and when finished - turn it off. This is preferable, >> imho, to having "clear" X11 processing when local - and otherwise >> impossible when working remote. >> >> Working with openssh-7.5p2 I cannot figure out what (extra) I need to >> do with sshd_config...

I do not often use X11 - but when I do I prefer to enable X11forwarding, and when finished - turn it off. This is preferable, imho, to having "clear" X11 processing when local - and otherwise impossible when working remote. Working with openssh-7.5p2 I cannot figure out what (extra) I need to do with sshd_config to get it working. I know that there is a...

On 13/10/2017 08:03, Damien Miller wrote: > On Thu, 12 Oct 2017, Michael Felt wrote: > >> On 08/10/2017 23:32, Michael Felt wrote: >>> On 04/10/2017 11:07, Michael Felt wrote: >>>> I do not often use X11 - but when I do I prefer to enable >>>> X11forwarding, and when finished - turn it off. This is preferable, >>>> imho, to having "clear" X11 processing when local - and otherwise >>>> impossible when working remote. >>>> >>>> Working with openssh-7.5p2 I cannot figure out what (extra) I need to...

I have just installed openssh-1.2.2p1-1 on two of my machines and I have one problem. I have X11Forwarding yes in my /etc/ssh/sshd_config but when I try to ssh to that machine I get this when i try to start rxvt: [pucko at b202 pucko]$ rxvt X11 connection rejected because of wrong authentication. X connection to b202.ryd.student.liu.se:11.0 broken (explicit kill or server shutdown). [pucko at b202...

I am running 2.1.1p4 on RedHat Linux and several Solaris boxes. I have X11Forwarding set to yes in .ssh/ssh_config, as well as all of the sshd_config files. Works just fine between machines inside my firewall, but I can't forward X11 clients from outside the firewall. We have a PIX doing NAT. Any idea what I'm missing?

...enticate with username and password -????????? shell users have to authenticate with private key. ? I put Into the sshd_config global section: PasswordAuthentication no ? and the end of the sshd_config: Subsystem?????? sftp??? internal-sftp ? Match Group admin ??? AllowTCPForwarding yes ??? X11Forwarding yes ??? ForceCommand bash ? Match Group sftp-only ??? PasswordAuthentication yes ??? AllowTCPForwarding no ??? X11Forwarding no ??? ForceCommand internal-sftp ? This config works well for SFTP users ? but if a user is a member of both group, the SFTP client fails to connect. Obviously becaus...

...Several people noticed problems with openssh Version 1.2.2 through 1.2.3 related to X11 forwarding under Linux. For example: Magnus Holmberg <pucko at lysator.liu.se> wrote: > I have just installed openssh-1.2.2p1-1 > on two of my machines and I have one problem. > > I have > X11Forwarding yes > in my /etc/ssh/sshd_config > > but when I try to ssh to that machine I get this when i try to start rxvt: > > [pucko at b202 pucko]$ rxvt > X11 connection rejected because of wrong authentication. > > X connection to b202.ryd.student.liu.se:11.0 broken (explicit kill o...

...es: > I'm just trying to figure out under what normal circumstances a > connection with X11 forwarding enabled wouldn't be owned by a user who > already has normal system privileges for ssh, sftp, and scp access. Some OS distributions (FreeBSD, RHEL / CentOS, probably Fedora) have X11Forwarding enabled by default. DES -- Dag-Erling Sm?rgrav - des at des.no

>Traditionally the rsh command (as implemented on SysV systems such as >hpux which is where my experience comes from) implements >/usr/local/bin:/usr/bin:/bin, etc., the operative directory being >/usr/local/bin. But openssh does not. Which means I always need to First I wouldn't say that HPUX was a good example of SysV, second /usr/local/bin is certainly not ever placed in the

...can currently do this through authorized_keys, but as far as I know that only works for an actual key. In my use case, I wanted a user with no password which is forced to run a specific command, and without a PTY. I didn't see any other good options for this, so I wrote my own based off of the X11Forwarding directive. This patch seems complete, but the man page stuff is not. I wrote in the sshd_config.0 for an example of how I think it could look, but I'm not very familiar with the syntax in sshd_config.5, so didn't do much there. I imagine the things I wrote in sshd_config.0 would be overwri...

Greetings, I'm running OpenSSH_2.5.2p2, and OpenSSL-0.9.6a, on BSD/OS 4.0. Following the FAQ, I added the following line to my sshd_config in order to enable X11 forwarding: X11Forwarding yes Now openssh is disconnecting my sessions immediately after authentication and login with the following error messages: "error: socket: Protocol not supported" "Disconnecting: Command terminated on signal 11." Any ideas what the problem is? # sshd -d debug1: Seeded RNG wi...

Hi all, I have C6 i386 with cr repo enabled; problem is, I can't get x-forwarding to work, xorg-x11-auth rpm is installed, have checked sshd config for #X11Forwarding no X11Forwarding yes #X11DisplayOffset 10 Here is a verbose ssh logon, I can't see any difference to a working server: debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug1: Entering i...

On 13/10/2017 15:29, Michael Felt wrote: > This verifies it is xauth related: > > debug3: sending debug message: No xauth program; cannot forward with > spoofing. > > so, added an extra debug - and this is what I see: > > debug1: session_input_channel_req: session 0 req x11-req > debug3: setup_x11fwd: xauth_location == /usr/X11R6/bin/xauth > debug3: sending debug

I need to enable forward the xWindows through my SSH session, but I'm having trouble. I'm using Putty and I've configured it to allow enable x11 forwarding through the ssh tunnel. I've also edited the /etc/ssh/sshd_config and set X11Forwarding yes. After doing this, it's not working. I'm sure there's quite a bit not doing. Could anybody offer any guidance? This is my first attempt to do this. Thanks, Todd -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipe...

I've configured OpenSSH_5.3p1 to only allow sftp connections (openssh chroot functionality). i.e. Subsystem sftp internal-sftp Match group sftpusers ChrootDirectory /chroot/%u X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp So far everything works correctly with sftp but when a user ssh's or scp's to the box the login hangs after authentication. Is there anyway to get sshd to close the connection instead of just hanging? My question is the...

OpenSSH Security Advisory: x11fwd.adv This document may be found at: http://www.openssh.com/txt/x11fwd.adv 1. Affected configurations All versions of OpenSSH prior to 7.2p2 with X11Forwarding enabled. 2. Vulnerability Missing sanitisation of untrusted input allows an authenticated user who is able to request X11 forwarding to inject commands to xauth(1). Injection of xauth commands grants the ability to read arbitrary files under the authenticated user's privilege, Other x...

I can ssh into a remote machine. I can start X on that machine with startx How do I then start firefox on that machine (from the ssh prompt) and have it display on my machine in my office. So I want to be using firefox on the remote machine but displaying the screen output from firefox in my office. Both boxes are running centos 5. how is that done? Jerry

...Centos 4.0 without X server, but I need use mysql-administrator from other pc with X server. In the moment to export X from the server this message show me: [root at server]# mysql-administrator (mysql-administrator-bin:19124): Gtk-WARNING **: cannot open display: The /etc/ssh/sshd_config have X11Forwarding yes and the /etc/ssh/ssh_config have Host * GSSAPIAuthentication yes ForwardX11 yes What's the problem? Thanks -- Cristofer Reyes Aguilera linux-user #353991 http://www.inf.utfsm.cl/~crreyes Laboratorio de Computacion, Departamento de Informatica, UTFSM cr...