similar to: ControlPersist and multiple X11 forwarding.

I'm reading this fine article on O'Reilly: http://linux.oreillynet.com/lpt/a//linux/2001/11/08/ssh_keystroke.html <quote> The paper concludes that the keystroke timing data observable from today's SSH implementations reveals a dangerously significant amount of information about user terminal sessions--enough to locate typed passwords in the session data stream and reduce the

In the changelog, there is an entry: 20001129 - (djm) Back out all the serverloop.c hacks. sshd will now hang again if there are background children with open fds. Does this mean that this is regarded as expected (and correct) behavior, that should not change in the future, or does it mean that this behavior is a known problem that someone will eventually fix? --Adam -- Adam McKenna

Heya, Most of the windows ssh clients (putty, securecrt) have anti-idle features. They offer either a null packet or protocol no-op or user defined string to be sent over every x seconds. Is this possible or planned with the OpenSSH client? Our draconian firewall admins have started timing out ssh sessions. Yes I'm aware I could hack up a port forwarding dumb traffic process, but was

Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to,

Hi OpenSSH developers, I am using openSSH (now 2.9.9p2, but prob occurs in 2.9p2 also) to execute commands on a remote machine which outputs data to stdout then pipes it to another invocation of ssh which connects back to the first machine in the same way, where it starts a program to read and store the output from the command on the second machine. I am using the "command" option in

Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to,

http://bugzilla.mindrot.org/show_bug.cgi?id=1330 Summary: RFE: 'ControlPersist' support -- automatically fork and leave ControlMaster behind as a d?mon Product: Portable OpenSSH Version: 4.6p1 Platform: Other OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component:

Hello, ? I need to make many (>50) ssh connections from linux to cygwin at the same time. Using Windows 2000 Server (OpenSSH_4.3p2, OpenSSL 0.9.8b and updated cygwin) and Linux RHEL4 (OpenSSH_3.9p1, OpenSSL 0.9.7a). ? It's been difficult to optimize many simultaneous connections. Here were some issues: 1.?????? On Windows XP/Professional, Microsoft intentionally cripples the TCP/IP stack.

Greetings, I have a problem with OpenSSH -current and SCO 3.2v4.2, when I execute a remote command or exit from a session, the connection hangs, ( line 326 of serverloop.c). This problem only exists when using ssh2. server side debug (-d -d -d ): debug1: Received SIGCHLD. debug2: channel 0: read failed debug2: channel 0: close_read debug2: channel 0: input open -> drain debug2: channel 0:

Here is my third attempt at the idletimeout patch. I tried to address the points which Marcus Friedl brought up. It is actually bigger than the previous patches, but not as intrusive. It is big because it moves some stuff from serverloop.c to packet.c. - I moved all the logic to packet.c. This means that I also had to move the actual select() call, which used to be in serverloop.c to packet.c.

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, There seems to be just a bit to do with the latest openssh (5.8p1) and ControlPersist. I encountered two problems: 1. When I use ControlPersist in combination with ProxyCommand to reach a other host over that proxy I get the following message: Bad packet length 1397966893. Disconnecting: Paket corrupt When I fist ssh to

Good afternoon! I've been looking for a way to avoid having to keep my "master" ssh session open while I have others open. This is particularly a pain when my "master" is an scp connection. After searching the archives, I came up with this thread "ControlPersist and multiple X11 forwardings." However, I can't find anything saying that it was

https://bugzilla.mindrot.org/show_bug.cgi?id=2394 Bug ID: 2394 Summary: Provide a global configuration option to disable ControlPersist Product: Portable OpenSSH Version: 6.8p1 Hardware: Other OS: Linux Status: NEW Severity: enhancement Priority: P5 Component: ssh

Hi openssh-unix-dev subscribers :) I have found that ServerAliveInterval & ServerAliveCountMax have some bug. Basically the ssh-alive check function (that verify the peer is alive) is called only if no data at all gets into ssh (when it should work only for server channel).I am pretty sure developers know about this ..anyway I have tried to fix this issue. Here is the patch: diff -rNu

Hi, While testing the ControlPersist option (which is very useful by the way, thank you), I find out that setting it to 0 has the same behaviour as setting it to yes, while I would have expected to exit as soon as the last client exits. I'd like to make this behaviour clear, I think it should be documentated in the man page for example like this: $ cvs diff -u ssh_config.5 Index:

https://bugzilla.mindrot.org/show_bug.cgi?id=1988 Darren Tucker <dtucker at zip.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dtucker at zip.com.au Blocks| |2076 -- You are receiving this mail

https://bugzilla.mindrot.org/show_bug.cgi?id=1812 Summary: ControlPersist causes defunct/zombie processes Product: Portable OpenSSH Version: 5.6p1 Platform: All URL: http://bugs.debian.org/594687 OS/Version: All Status: NEW Severity: normal Priority: P2 Component: ssh AssignedTo:

https://bugzilla.mindrot.org/show_bug.cgi?id=1943 Bug #: 1943 Summary: [PATCH] ssh -W opens two connections when ControlPersist is enabled. Classification: Unclassified Product: Portable OpenSSH Version: 5.9p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority:

This is a better approach to persistent control masters than my previous attempt. Instead of forking before we make the connection, do so only when the original session has closed -- much like the code for '~&' backgrounding already does. My earlier patch for 'ControlPath none' still applies and is required, btw. --- openssh/clientloop.c~ 2005-06-17 03:59:35.000000000 +0100

Hi there, So I created a patch that makes ssh behave more like sudo. You connect to a host typing your password, you quit, you connect again and you are let in immediately. If you wait for too long you have to type your password again. It works if you have a ControlPath, ControlMaster is auto, ControlPersist is yes and ControlTimeout is for example 5m. This will make a master when you