search for: channel_setup_fwd_listener

...old ssh process p Restart=always RestartSec=5s StartLimitInterval=0 [Install] WantedBy=multi-user.target }}} Unfortunately on some hosts we see this warning again and again: Mar 13 23:11:14 remotehost sshd[10938]: error: bind: Address already in use Mar 13 23:11:14 remotehost sshd[10938]: error: channel_setup_fwd_listener: cannot listen to port: 40443 Mar 13 23:11:14 remotehost sshd[10938]: error: bind: Address already in use Mar 13 23:11:14 remotehost sshd[10938]: error: channel_setup_fwd_listener: cannot listen to port: 8080 Since we kill the old tunnel before starting a new, I don't understand why this error...

...t;dynamically assigned" port for remote listener, by requesting listener on port 0. This is supposed to create a listener on a port choosen by server. Everything seemed OK (the choosen port was sent back to client), but forwarding was refused. So I checked the source. in channels.c, function: channel_setup_fwd_listener /* * listen_port == 0 requests a dynamically allocated port - * record what we got. */ if (type == SSH_CHANNEL_RPORT_LISTENER && listen_port == 0 && allocated_listen_port != NULL...

...ng to create a tunnel. I hoped that if the tunnel could not be established completely, ssh would exit with an error status. This is important to programs and scripts that use ssh to only create tunnels. I tried the following: $ ./ssh -n -a -N -L 80:localhost:17 remote bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 80 Could not request local forwarding. $ ./ssh -f -a -N -L 80:localhost:17 remote bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 80 Could not request local forwarding. $ ps jeremyp 25826 0.0 0.2 3112 1628 ? S 15:08 0:00 ./ssh...

...t. I've tried localhost and gateway ports; I've tried low medium and high ports. The error is always the same: netstat -na doesn't list the LISTEN; ...... sshd[16194]: [ID 800047 auth.error] error: bind: Cannot assign requested address ...... sshd[16194]: [ID 800047 auth.error] error: channel_setup_fwd_listener: cannot listen to port: 4312 ...... sshd[16214]: [ID 800047 auth.error] error: bind: Cannot assign requested address ...... sshd[16214]: [ID 800047 auth.error] error: channel_setup_fwd_listener: cannot listen to port: 40312 ------- You are receiving this mail because: ------- You are the assi...

...(listen_addr==NULL?NULL:strlen(listen_addr)>0?listen_addr:NULL, + strport, &hints, &aitop) != 0) packet_disconnect("getaddrinfo: fatal error"); for (ai = aitop; ai; ai = ai->ai_next) { @@ -2222,28 +2223,28 @@ success = 1; } if (success == 0) - error("channel_setup_fwd_listener: cannot listen to port: %d", - listen_port); + error("channel_setup_fwd_listener: cannot listen to port: %s/%d", + listen_addr == NULL ? "0.0.0.0" : listen_addr, listen_port); freeaddrinfo(aitop); return success; } /* protocol local port fwd, used by ssh...

...2 setting AllowStreamLocalForwarding yes debug3: reprocess config:93 setting StreamLocalBindUnlink yes [...snip...] debug1: server_input_global_request: rtype streamlocal-forward at openssh.com want_reply 1 debug1: server_input_global_request: streamlocal-forward listen path /sshvpn/gateway debug3: channel_setup_fwd_listener_streamlocal: type 19 path /sshvpn/gateway bind: Address already in use unix_listener: cannot bind to path: /sshvpn/gateway I am aware of the StreamLocalBindUnlink option, and you can see that it is set on both the client and the server, but it doesn't seem to be effective. I also ran it under...

Hi, I'm not sure if this is a bug or not, maybe someone noticed it also... I always do a remote port forwarding with openssh on 1026 port let's say ( ssh -R 1026:localhost:55555 ). Most times the port is opened on remote machine. But sometimes i notice that ssh can't do remote port forwarding to that port 1026. I looked on the remote machine (netstat -an) and no one is using that

...command line could be like: ssh -L [localhost:]localport:remotehost:remoteport login at host where [] - indicates optional parameter. localhost is the interface to be used for openning a socket (i.e. <localhost> should be passed as a 'node' parameter to getaddrinfo() in channel.c:channel_setup_fwd_listener). The other parameters are the same as in the current ssh implementation. For example: ssh -N -L 192.168.0.2:139:somehost:139 could be used to forward Samba packets only on the interface 192.168.0.2. Another interface on the same server - e.g. 192.168.0.1 - could be used to host local samba ser...

...onfig:93 setting StreamLocalBindUnlink yes > > [...snip...] > > debug1: server_input_global_request: rtype > > streamlocal-forward at openssh.com want_reply 1 > > debug1: server_input_global_request: streamlocal-forward listen path > > /sshvpn/gateway > > debug3: channel_setup_fwd_listener_streamlocal: type 19 path > > /sshvpn/gateway > > bind: Address already in use > > unix_listener: cannot bind to path: /sshvpn/gateway > > > > I am aware of the StreamLocalBindUnlink option, and you can see that > > it is set on both the client and the server, bu...

...-R 22220:faron:22 linus". Obviously I want to see the word 'faron' somewhere but don't. That seems like a bug to me. ... debug1: server_input_global_request: rtype tcpip-forward want_reply 1 debug1: server_input_global_request: tcpip-forward listen localhost port 22220 debug3: channel_setup_fwd_listener: type 11 wildcard 0 addr NULL debug1: Local forwarding listening on 127.0.0.1 port 22220. ... Fantastic! But half the useful information. Okay, maybe I have to connect through the forward to get the full info for some reason. I see the following from that same sshd when I 'tickle' the f...

Hello everybody, I've read the ssh protocol draft http://www.ietf.org/internet-drafts/draft-ietf-secsh-connect-24.txt and I wonder if the feature documented in section 7.1, page 15, last paragraph, is implemented in OpenSSH or not (sshd chooses the first free non privileged port to forward when the specified port number is 0). I need this feature and, if it isn't implemented yet, I

I'm creating a patch to support Unix domain socket forwarding. I hadn't intended to initally support specifying remote Unix domain sockets (#ifdef'd that code out in the parse_forward() work), but now that I've gotten as far as channel_setup_fwd_listener() it seems like it makes sense to add the support now, rather than later. Any comments on adding to channels.h the following (w/ accompanying support)? #define SSH_CHANNEL_UNIX_LISTENER 15 #define SSH_CHANNEL_RUNIX_LISTENER 16 I'm guessing that this channel type enumeration is specified in on...

...nnections will eventually shut down fine. if I instead leave the first ssh tunnel running and issue the tunnel command, ssh -x -N -L 3333:hostC:5433 -o BatchMode=yes -o ExitOnForwardFailure=yes X at hostC a second time, I get the following messages (ssh pid=31923): bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 3333 Could not request local forwarding. ssh (pid 31923) exits as can be expected since I specified the ExitOnForwardFailure=yes option. However, this time, ssh doesn't kill the ssh sub process doing the forwarding via hostB, and I'm left with a leftover ssh process...

...} This restores a piece of code that was there in an older release (got it from 4.7p1 actually) Comparing similar code for general port forwarding binds, this code now behaves like that; ie: works on Solaris without ipv6 enabled. The code I'm referring into is the bind-fail case in channel_setup_fwd_listener(); note it continues trying to bind to other addresses if one fails. -- You are receiving this mail because: You are watching the assignee of the bug. You are watching someone on the CC list of the bug.

...parse_forward() (a) the len is checked against NI_MAXHOST while it should be checked against (SSH_CHANNEL_PATH_LEN - 1). (b) the check should be also performed against listen_host when in remote fwd mode; otherwise hostname of any length is sent over The check against connect_host is already in channel_setup_fwd_listener(). I think that correct way is to remove the check from parse_forward() completely and put a new check against listen_host to channel_request_remote_forwarding(). patch attached. -- Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email ------- You are receiving this mail becaus...

...:PORT-NUMBER. This is confusing (we spent a couple of days debugging the fallout of this). Moreover, if the sshd is running on a multi-user system, a malicious user may use this to intercept or modify the traffic over the forwarded port. Suggested fix: do not call discard the incoming address in channel_setup_fwd_listener() if it is either 127.0.0.1 or ::1 -- You are receiving this mail because: You are watching the assignee of the bug.

...pkalg ssh-rsa blen 533 debug2: input_userauth_pk_ok: fp 46:bb:2a:c2:29:72:ad:bc:a7:04:c8:8d:77:31:6f:5e debug3: sign_and_send_pubkey debug3: Received SSH2_MSG_IGNORE debug1: Authentication succeeded (publickey). debug1: Local connections to LOCALHOST:2122 forwarded to remote address cfe1:22 debug3: channel_setup_fwd_listener: type 2 wildcard 0 addr NULL debug1: Local forwarding listening on 127.0.0.1 port 2122. debug2: fd 4 setting O_NONBLOCK debug3: fd 4 is O_NONBLOCK debug1: channel 0: new [port listener] debug2: fd 7 setting O_NONBLOCK debug1: channel 1: new [client-session] debug3: ssh_session2_open: channel_new: 1...

https://bugzilla.mindrot.org/show_bug.cgi?id=2035 Priority: P5 Bug ID: 2035 Assignee: unassigned-bugs at mindrot.org Summary: Bugs intended to be fixed in 6.2 Severity: normal Classification: Unclassified OS: All Reporter: dtucker at zip.com.au Hardware: All Status: NEW Version: