search for: ssh_channel_opening

...with SSH v2 is not working on my Solaris machines (and from what I understand from the source, it may not work elsewhere either). When looking at channel_post_port_listener() in channels.c, I found that nextstate was defined as : nextstate = (c->host_port == 0) ? SSH_CHANNEL_DYNAMIC : SSH_CHANNEL_OPENING; And later comes the call : if (nextstate != SSH_CHANNEL_DYNAMIC) port_open_helper(nc, rtype); It turns out that on the server-side, for a channel type of SSH_CHANNEL_RPORT_LISTENER, c->host_port is 0 and therefore, per the above code, nextstate == SSH_CHANNEL_DYNAMIC and port_open_helpe...

...el_connect *); +static int connect_to_helper(const char *host, u_short port, struct channel_connect *cctx); /* -- channel core */ @@ -209,6 +210,7 @@ channel_lookup(int id) case SSH_CHANNEL_LARVAL: case SSH_CHANNEL_CONNECTING: case SSH_CHANNEL_DYNAMIC: + case SSH_CHANNEL_RDYNAMIC: case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_INPUT_DRAINING: @@ -534,6 +536,7 @@ channel_still_open(void) case SSH_CHANNEL_CLOSED: case SSH_CHANNEL_AUTH_SOCKET: case SSH_CHANNEL_DYNAMIC: + case SSH_CHANNEL_RDYNAMIC: case SSH_CHANNEL_CONNECTING: case SSH_CHANNEL_ZOMBIE: continue;...

When I encounter the problem with TCP port forwarding locking up, I'll see this on the client window (if I haven't invoked ssh with -q): chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected This is with Blowfish encryption. I have to kill and restart the client when this happens. Phil

https://bugzilla.mindrot.org/show_bug.cgi?id=2079 Bug ID: 2079 Summary: openssh 6.1/6.2 disconnect due to channel bug Classification: Unclassified Product: Portable OpenSSH Version: 6.1p1 Hardware: amd64 OS: FreeBSD Status: NEW Severity: normal Priority: P5 Component: ssh

this (uncomplete) patch makes various features compile time options and saves up to 24K in the resulting ssh/sshd binaries. i don't know whether this should be added to the CVS since it makes the code less readable. perhaps WITH_COMPRESSION should be added, since it removes the dependency on libz -m Index: Makefile.inc =================================================================== RCS

Using OpenSSH_2.9p2 on Linux and Sparc Solaris. Trying to connect from Linux to Solaris, with remote port-forwarding i.e. On Linux, ssh -R 3000:Linux:23 Solaris The connection is established okay, but the port-forwarding does not work; on Solaris, the connection to localhost port 3000 is accepted, but it appears as if no data makes it back to port 23 on Linux. If an older 1.2.30 sshd is used

Hi all, I'm using openssh-2.9p2 on Solaris 2.8. I can get remote port forwarding to work using the -R flag, but only with ssh protocol 1 not ssh protocol 2. I've read that remote forwarding protocol 2 was not supported in earlier versions of openssh, but I'm wondering if this is still the case. Jarno Huuskonen [Jarno.Huuskonen at uku.fi], posted a patch in 2000 to add support for

...30 2001 +++ channels.c.new Thu Apr 5 03:54:56 2001 @@ -1503,7 +1503,6 @@ case SSH_CHANNEL_LARVAL: if (!compat20) fatal("cannot happen: SSH_CHANNEL_LARVAL"); - continue; case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_X11_OPEN: (That is, remove the "continue" statement.) I'm not 100% sure this is the right fix, though; I'm going to post to the OpenSSH developers list and see what they say. -- Richard Silverman slade...

...port %d", c->listening_port, c->path, c->host_port, remote_hostname, remote_port); - newch = channel_new("direct-tcpip", + newch = channel_new((c->type == SSH2_CHANNEL_PORT_LISTENER) ? + "forwarded-tcpip" : "direct-tcpip", SSH_CHANNEL_OPENING, newsock, newsock, -1, c->local_window_max, c->local_maxpacket, 0, xstrdup(buf), 1); if (compat20) { packet_start(SSH2_MSG_CHANNEL_OPEN); - packet_put_cstring("direct-tcpip"); + if (c->type == SSH2_CHANNEL_PORT_LISTENER) + packet_put_cstring("forw...

...newch = channel_new("direct-tcpip", + /* Jarno: If the channel is SSH2 port listener (server) then send + * forwarded-tcpip message. + */ + newch = channel_new( (c->type == SSH2_CHANNEL_PORT_LISTENER) ? + "forwarded-tcpip" : "direct-tcpip", SSH_CHANNEL_OPENING, newsock, newsock, -1, c->local_window_max, c->local_maxpacket, 0, xstrdup(buf)); if (compat20) { packet_start(SSH2_MSG_CHANNEL_OPEN); - packet_put_cstring("direct-tcpip"); + if (c->type == SSH2_CHANNEL_PORT_LISTENER) + packet_put_cstring("forward...

On Wed, 8 Nov 2023, Roger Marsh wrote: > Damien, > > Sorry about distributed context. > > Those discussions told me about the new ObscureKeystrokeTiming > argument to the ssh command. One reply suggested I try that because it > is easy to test. > > Most of my xterm ssh command combinations in fvwm configuration file > are expressed 'Exec exec xterm -title ... -e

...fd; debug("Requesting tun."); +#if defined(SSH_TUN_LINUX) + if ((fd = tun_open(options.tun_local, + options.tun_open, original_real_uid)) >= 0) { +#else if ((fd = tun_open(options.tun_local, options.tun_open)) >= 0) { +#endif c = channel_new("tun", SSH_CHANNEL_OPENING, fd, fd, -1, CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT, 0, "tun", 1);

Hello I have ported OpenSSH 3.8p1 to a LynxOS platform. Recently I heard a report from the field that v2 is perceived to be significantly slower than v1. Is this a known issue? Are there any configuration parameters that can be modified to make v2 faster? Thanks in advance for your response Amba

...eyscan and ssh/ssh-keyscan Common subdirectories: src/usr.bin/ssh/ssh-keysign and ssh/ssh-keysign diff -u src/usr.bin/ssh/ssh.c ssh/ssh.c --- src/usr.bin/ssh/ssh.c 2004-06-13 11:03:02.000000000 -0400 +++ ssh/ssh.c 2004-07-07 10:02:24.000000000 -0400 @@ -1125,7 +1125,11 @@ "session", SSH_CHANNEL_OPENING, in, out, err, window, packetmax, CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0); - + if (!tty_flag) { + c->dynamic_window = 1; + set_unlimited(&c->input,1); + set_unlimited(&c->output,1); + } debug3("ssh_session2_open: channel_new: %d",...

..._still_open(void) case SSH_CHANNEL_X11_LISTENER: case SSH_CHANNEL_PORT_LISTENER: case SSH_CHANNEL_RPORT_LISTENER: + case SSH_CHANNEL_MUX_LISTENER: case SSH_CHANNEL_CLOSED: case SSH_CHANNEL_AUTH_SOCKET: case SSH_CHANNEL_DYNAMIC: @@ -531,6 +531,7 @@ channel_still_open(void) case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_X11_OPEN: + case SSH_CHANNEL_MUX_CLIENT: return 1; case SSH_CHANNEL_INPUT_DRAINING: case SSH_CHANNEL_OUTPUT_DRAINING: @@ -562,6 +563,8 @@ channel_find_open(void) case SSH_CHANNEL_X11_LISTENER: case SSH_CHANNEL_PORT_LISTENER: case SS...

When a TCP connection is established through a tunnel (e.g. using -L 2000:www.openssh.org:80), all data sent by the local TCP client is silently dropped until the sshd has opened the connection to the remote (www.openssh.org). This is very visible when forwarding to a remote host that is far away (i.e. has high ping time) from the sshd. I have attached a sample program that shows the problem.

Hi, Could anyone tell me why break requests are only handled in sshd if the channel type is in a 'LARVAL' state? I'm converting an application that currently uses telnet as an underlying communication protocol and it relies on a SIGINT when an IAC/IP is received by the telnet daemon. It seems an SSH break could/should perform a similar function (tcsendbreak() in session_break_req()

The command "ssh ls -l /doesnotexist" gives various responses: Running from a 200 MHz PentiumPro with dsa key added to ssh-agent: Mistakes worst to fast machine: To a faster 600 MHz dual processor i686 600 MHz machine: ls: /doesnotexist: No such file or directory -- correct nothing at all -- wrong ls: select: Bad file descriptor -- wrong

...ee channel %d", c->self); channel_free(c); diff -u openssh-3.8.1p1/ssh.c openssh-3.8.1p1-dynwindow/ssh.c --- openssh-3.8.1p1/ssh.c 2004-03-21 17:36:01.000000000 -0500 +++ openssh-3.8.1p1-dynwindow/ssh.c 2004-07-07 09:54:03.000000000 -0400 @@ -1117,7 +1117,11 @@ "session", SSH_CHANNEL_OPENING, in, out, err, window, packetmax, CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0); - + if (!tty_flag) { + c->dynamic_window = 1; + set_unlimited(&c->input,1); + set_unlimited(&c->output,1); + } debug3("ssh_session2_open: channel_new: %d",...

Numerous how-tos all over the Internet show how one would set up a tunnel using ssh, e.g.: ssh -f -o Tunnel=ethernet <server_ip> true I was wondering if there's a way to subsequently acquire the names of the local and remote tun/tap interfaces (e.g., using the default "-w any:any") for subsequent automatic tunnel configuration, e.g.: ip link set $TapDev up ip link set