search for: no_shell_flag

Hi, I have a problem with a Linux box which I updated from 2.5.2p2 to 2.9p2 recently. It's running a tunnel started via inittab using a script which starts ssh -2 -N -o 'ConnectionAttempts 3600' -L <tunnel> $host This has run reliable with 2.5.2 over the last months. Now, after I have upgraded to 2.9p2, the tunnel is closed right after each attempt of an application to use

I've been testing tunneling on Linux with openssh-SNAP-20060116.tar.gz and found a problem. When I use LocalCommand for doing ifconfig stuff, the command line was executed before a tunneling interface is opened. This causes errors on Linux and the interface is not automatically set up. This is not a problem on *BSD because you can do ifconfig for unopened tun/tap interfaces. But in Linux,

...29 @@ /* reinit */ log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 0); + /* -N option only makes sense with protocol 2. It doesn't make sense + without port forwarding ?????? + */ + if ( options.num_local_forwards == 0 && options.num_remote_forwards == 0 && + no_shell_flag ) { + fprintf(stderr, "-N makes sense only with port forwardings\n"); + usage(); + /* NOT REACHED */ + } + if ((options.protocol & SSH_PROTO_2) && no_shell_flag && + buffer_len(&command) > 0) { + fprintf(stderr,"-N option works only with protocol ver...

Hello, I just ran upon this problem and couldn't find it in bugzilla. SSH crashes (abort trap) if all of the following conditions are met: (a) option -f is used (crash happens when going to background), (b) reverse port forwarding is set up (option -R), (c) option ExitOnForwardFailure is enabled, (d) there are no actual port-forwarding failures. The problem can be reproduced by

...} /* request pty/x11/agent/tcpfwd/shell for channel */ @@ -1201,7 +1203,9 @@ /* XXX should be pre-session */ ssh_init_forwarding(); - ssh_control_listener(); + if (!ssh_control_listener(0)) + fatal("control master socket %s already exists", + options.control_path); if (!no_shell_flag || (datafellows & SSH_BUG_DUMMYCHAN)) id = ssh_session2_open(); @@ -1319,7 +1323,13 @@ switch (options.control_master) { case SSHCTL_MASTER_AUTO: case SSHCTL_MASTER_AUTO_ASK: - debug("auto-mux: Trying existing master"); + /* see if we can create a control master socket +...

https://bugzilla.mindrot.org/show_bug.cgi?id=2577 Bug ID: 2577 Summary: Port Forwarding on Proxy with ProxyCommand ssh -W does not work / bad file descriptor Product: Portable OpenSSH Version: 7.2p1 Hardware: amd64 OS: Linux Status: NEW Severity: major Priority: P5

...29 @@ /* reinit */ log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 0); + /* -N option only makes sense with protocol 2. It doesn't make sense + without port forwarding ?????? + */ + if ( options.num_local_forwards == 0 && options.num_remote_forwards == 0 && + no_shell_flag ) { + fprintf(stderr, "-N makes sense only with port forwardings\n"); + usage(); + /* NOT REACHED */ + } + if ((options.protocol & SSH_PROTO_2) && no_shell_flag && + buffer_len(&command) > 0) { + fprintf(stderr,"-N option works only with protocol ver...

...========================================== RCS file: /cvs/src/usr.bin/ssh/clientloop.c,v retrieving revision 1.216 diff -u -p -r1.216 clientloop.c --- clientloop.c 9 Jan 2010 05:04:24 -0000 1.216 +++ clientloop.c 14 Jan 2010 03:07:49 -0000 @@ -113,7 +113,7 @@ extern int stdin_null_flag; extern int no_shell_flag; /* Control socket */ -extern int muxserver_sock; +extern int muxserver_sock; /* XXX use mux_client_cleanup() instead */ /* * Name of the host we are connecting to. This is the name given on the @@ -138,7 +138,7 @@ static volatile sig_atomic_t received_si static int in_non_blocking_mode =...