[Bug 416264] Re: ssh client pauses during GSS negotiation due to delay on reverse lookup in avahi

2009-11-11 Thread marco.pallotta
So it couldn't be a bug but an expected behavior. I don't know why GSSAPI auth 
needs reverse lookup but one could argue that you have to set right direct and 
reverse dns config in order to use SSH. If you haven't it (as in my situation) 
the problem could be related to you (and me :-)) 
Obviously you can disable GSSAPI auth (if you have access to SSH server) and, 
personally, I think it shouldn't enabled by default (even if many distro, as 
RH, do it). 
The suggest could be: enable it, by default, in a server distro (Ubuntu Server) 
and disable it, by default,  in the desktop release.

-- 
ssh client pauses during GSS negotiation due to delay on reverse lookup in avahi
https://bugs.launchpad.net/bugs/416264
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[Bug 84899] Re: SSH with GSSAPIAuthentication option on SSH servers are very slow

2009-10-14 Thread marco.pallotta
I think the bug description is not very clear: there are situations in
which disabling GSSAPIAuthentication on server side fix the issue (maybe
because of DNS doesn't have a reverse resolution, as in my situation
fixed just putting GSSAPIAuthentication to off on a server that doesn't
have a reserve resolution as it has a prive IP ) and other not (as you
can read from most comments).

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SSH with GSSAPIAuthentication option on SSH servers are very slow
https://bugs.launchpad.net/bugs/84899
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[Bug 416264] Re: ssh -v reports debug1 - unspecified gss failure. minor code may provide more information

2009-10-14 Thread marco.pallotta
Excuse me Chuck but the problem is clear. 
When you do 
ssh -v SERVER.DOMAIN

you obtain an output similar to the following:

OpenSSH_4.7p1 Debian-8ubuntu1.2, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to wall [141.250.199.62] port 22.
debug1: Connection established.
debug1: identity file /home/marcop/.ssh/identity type -1
debug1: identity file /home/marcop/.ssh/id_rsa type -1
debug1: identity file /home/marcop/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_3.9p1
debug1: match: OpenSSH_3.9p1 pat OpenSSH_3.*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.7p1 Debian-8ubuntu1.2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server-client aes128-cbc hmac-md5 none
debug1: kex: client-server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(102410248192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'wall' is known and matches the RSA host key.
debug1: Found key in /home/marcop/.ssh/known_hosts:87
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
No credentials cache found

debug1: Unspecified GSS failure.  Minor code may provide more information
No credentials cache found

debug1: Unspecified GSS failure.  Minor code may provide more
information


debug1: Next authentication method: publickey
debug1: Trying private key: /home/marcop/.ssh/identity
debug1: Trying private key: /home/marcop/.ssh/id_rsa
debug1: Trying private key: /home/marcop/.ssh/id_dsa
debug1: Next authentication method: password


There is no crash and no way to report it via apport.
I don't know what Unspecified GSS failure means. I have no kerberos system 
installed in my network (maybe could be this?). 

However my problem was related to the fact that connecting to a server
via ssh, apart from displaying the error indicated above (GSS failure),
it took to long. I found that the problem was related to the fact that
GSSAPIAuthentication was on by default on ssh server and the server had
no reverse dns IP (it has a private address). Disabling
GSSAPIAuthentication fixed the issue for me.

I obtain the same error (GSS failure) also connecting to other server
that have correct DNS config and GSSAPIAuthentication enabled but in
these servers I don't realize about the error because of there is no
delay in the connection (thanks to right DNS direct and reverse
loookup).

I say again that I don't know GSSAPI so if the error could be related to
the fact that I have no kerberos system we could mark the bug as
invalid or similar.

-- 
ssh -v reports debug1 - unspecified gss failure. minor code may provide more 
information
https://bugs.launchpad.net/bugs/416264
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[Bug 416264] [NEW] ssh -v reports debug1 - unspecified gss failure. minor code may provide more information

2009-08-20 Thread marco.pallotta
Public bug reported:

When I try to connect to an ssh server (with ssh -v) I always have (my
system is an Ubuntu 8.04):

debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure.  Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure.  Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure.  Minor code may provide more information
debug1: Next authentication method: publickey


The fact is that on many servers the establishment of ssh connection is very 
slow because of this issue.

** Affects: openssh (Ubuntu)
 Importance: Undecided
 Status: New

-- 
ssh -v reports debug1 - unspecified gss failure. minor code may provide more 
information
https://bugs.launchpad.net/bugs/416264
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[Bug 245493] Re: sharing a folder reports permission issues in Hardy Heron (32 bit)

2008-07-04 Thread marco.pallotta
mcas, I think the behavoir I described about the folder sharing is a real bug 
or, however, there is a bug in the steps that bring to make a share as an 
unexperienced user couldn't create a share the first time (as Ubuntu didn't 
tell to him to restart X or the system as whole) and he should spent much time 
to find a reason to solve the problem (maybe if he came from Windows he should 
try to reboot anyway :-)
I think that, until to find a better solution, proposing a restart (like the 
system already do in the notification bar after installing new kernels) could 
be an immediate, functionally, and maybe simple to implement, solution to solve 
this bug.

-- 
sharing a folder reports permission issues in Hardy Heron (32 bit)
https://bugs.launchpad.net/bugs/245493
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[Bug 245493] Re: sharing a folder reports permission issues in Hardy Heron (32 bit)

2008-07-04 Thread marco.pallotta
For the reason I explained in my previous post I think it's wrong to
mark the bug as invalid.

-- 
sharing a folder reports permission issues in Hardy Heron (32 bit)
https://bugs.launchpad.net/bugs/245493
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