X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:date:message-id:references :mime-version:content-type:content-transfer-encoding :in-reply-to; q=dns; s=default; b=LExrFpnhxjhxIScsTdGkttQsCaAaca 4MLlKGQAhkpsKJN+ENnrIHKy673X/Ni/kzlo35zJrQ4PvnJy0+2wH48Bp2UHaJ/l Hc7kN3WE6JlphSbsq24CYqZK/qOlqwPLOLXWpyd/1U4936ZddBTzaalGdwg8aDKG /DyApCo+HhrTU= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:to:from:subject:date:message-id:references :mime-version:content-type:content-transfer-encoding :in-reply-to; s=default; bh=1vvT3GDPDnk//zmrf7iAwv2aRVc=; b=bSeD hbYcVa0wcZQo/F7itz6nKRsh5CD5cIs63tXRUCm4NNSeC8Pzb1qXw5idaEjOK7Fj j43gm9GHJjP0GtiAwgCqvNKNzKXjilKMP5cJ0TjTVWStYKzHsmG02UX6XtFLhFxa tk2x/7FJU8wJ1s3hYdeSPhJ4ZklhhKmnjQq6G7A= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.3 required=5.0 tests=AWL,BAYES_00,FSL_HELO_BARE_IP_2,RCVD_IN_DNSWL_LOW,RCVD_NUMERIC_HELO,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=no version=3.3.2 X-HELO: plane.gmane.org To: cygwin AT cygwin DOT com From: Andrew DeFaria Subject: Re: X11Forward and xauth problems Date: Mon, 23 Mar 2015 14:27:30 -0700 Lines: 80 Message-ID: References: <55108046 DOT 1070206 AT dronecode DOT org DOT uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 In-Reply-To: <55108046.1070206@dronecode.org.uk> X-IsSubscribed: yes On 3/23/2015 2:06 PM, Jon TURNEY wrote: > On 23/03/2015 20:48, Andrew DeFaria wrote: >> Normally I just turn on -X (or put X11Forward yes in ~/.ssh/config) but >> that usually results in a noticeable delay in logging in and the >> following error: >> >> Warning: untrusted X11 forwarding setup failed: xauth key data not >> generated >> Warning: No xauth data; using fake authentication data for X11 >> forwarding. > > Firstly, if you don't want these warnings, use ssh -Y. > > (By using ssh -X, you are asking for something which the X server can't > give you, hence the warnings. See > http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-trusted-untrusted-x11-forwarding > for more details) Yeah but -Y gives me the same thing: Adefaria-lt:ssh -Y cm-app-ldev01 Warning: No xauth data; using fake authentication data for X11 forwarding. /usr/bin/xauth: unable to link authority file /home/adefaria/.Xauthority, use /home/adefaria/.Xauthority-n Cm-app-ldev01: > >> /usr/bin/xauth: unable to link authority file >> /home/adefaria/.Xauthority, use /home/adefaria/.Xauthority-n >> Cm-app-ldev01: >> >> I've asked about this in the past and I think the answer was that the >> message was correct but you shouldn't worry about it. If it didn't slow > > I'm sorry, I only have a vague memory of this discussion. > >> me down I probably would just ignore it. But it slows me down. So I ssh >> instead without X11Forward turned on then, when I need to run an X >> client, I do export DISPLAY=adefaria-lt:0 and make sure that I did an >> xhost + there at least once. But now that's broken! >> >> Adefaria-lt:xhost + >> access control disabled, clients can connect from any host >> Adefaria-lt:ssh cm-app-ldev01 >> Cm-app-ldev01:export DISPLAY=adefaria-lt:0 >> Cm-app-ldev01:xclock >> Error: Can't open display: adefaria-lt:0 >> Cm-app-ldev01: > > If you want this to work, you will now (since X server 1.17) need to > start the server with the option '-listen tcp'. Restarted Xwin with -multimonitor and -listen tcp. Now I get: Adefaria-lt:ssh -Y cm-app-ldev01 Warning: No xauth data; using fake authentication data for X11 forwarding. /usr/bin/xauth: unable to link authority file /home/adefaria/.Xauthority, use /home/adefaria/.Xauthority-n Cm-app-ldev01:echo $DISPLAY localhost:10.0 Cm-app-ldev01:xclock X11 connection rejected because of wrong authentication. Error: Can't open display: localhost:10.0 Cm-app-ldev01: > > [1] https://cygwin.com/ml/cygwin-xfree-announce/2015-02/msg00026.html > [2] > http://x.cygwin.com/docs/ug/using-remote-apps.html#using-remote-apps-telnet > [3] > http://x.cygwin.com/docs/faq/cygwin-x-faq.html#q-remote-clients-cant-connect > > [4] https://cygwin.com/ml/cygwin-xfree/2015-02/msg00051.html > -- Andrew DeFaria http://defaria.com -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple