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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box

 

 

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bugzilla-daemon at bugzilla

May 8, 2012, 5:23 PM

Post #1 of 5 (355 views)
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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box

https://bugzilla.mindrot.org/show_bug.cgi?id=2006

Darren Tucker <dtucker [at] zip> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |dtucker [at] zip

--- Comment #1 from Darren Tucker <dtucker [at] zip> 2012-05-09 10:23:51 EST ---
A couple of possibilities:
1) the key generation code in openssl was miscompiled. Does openssl
s "make tests" pass? which compiler did you use.
2) from memory, AIX 5.2 has a /dev/random device. It's possible that
it's blocking due to lack of entropy. I'd suggest stracing (or
equivalent) ssh-keygen and seeing what it's doing.

Another thing to try is to get openssl to generate a DSA key and see if
it works ("openssl dsaparam -genkey 1024 -out /dev/null" and "openssl
dsaparam -genkey 1024 -rand /dev/urandom -out /dev/null".

I have a machine I can test on but it's not currently set up.

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bugzilla-daemon at bugzilla

May 8, 2012, 5:30 PM

Post #2 of 5 (349 views)
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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box [In reply to]

https://bugzilla.mindrot.org/show_bug.cgi?id=2006

--- Comment #2 from Darren Tucker <dtucker [at] zip> 2012-05-09 10:30:27 EST ---
Also, by "can't connect" do you mean "sshd doesn't start and I get a
tcp connection refused" or "I can make a tcp connection but the login
never completes"?

Another thing to try is ssh'ing out from the problem machine (with
-vvv) and attaching the output here. If this also fails (which I
suspect it will) it'll give an indication of where the problem lies.

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bugzilla-daemon at bugzilla

May 9, 2012, 12:05 PM

Post #3 of 5 (354 views)
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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box [In reply to]

https://bugzilla.mindrot.org/show_bug.cgi?id=2006

--- Comment #3 from Dean Carter <DCarter [at] ballytech> 2012-05-10 05:05:14 EST ---
the putty problem is what what caused me to start looking at the new
openssh, I was able to do the usual ssh into the aix system just as
normal, but when one of our engineers tried to use putty to get into
the aix system it failed and timed out. What I noticed is that it
never got to the point where it would make an entry for ssh in the
windows registry.


The compiles of both the 5.2 32 bit and the 6.1 64 bit have been
working fine for quite a while. The last ones I made successfully were

bach:/opt/freeware/src/packages/SOURCES/openssh-6.0p1> ssh -V
OpenSSH_5.9p1, OpenSSL 1.0.0h 12 Mar 2012


the compiler that I use is xlc_r

bach:/opt/freeware/src/packages/SOURCES/openssh-6.0p1> lslpp -La |grep
-i xlc
xlC.adt.include 9.0.0.0 C F C Set ++ Application
xlC.aix50.rte 9.0.0.0 C F XL C/C++ Runtime for
AIX 5.2
xlC.cpp 5.0.2.0 C F C for AIX
Preprocessor
xlC.rte 9.0.0.0 C F XL C/C++ Runtime



the make tests gets to the ssh-keygen section and hangs

next I re-installed the openssl 1.0.0h, recompiled the latest openssh.

</opt/freeware/src/packages/SOURCES/openssh-6.0p1> ./ssh -V
OpenSSH_6.0p1, OpenSSL 1.0.0h 12 Mar 2012

I ran the make tests and it completed with a "all tests passed".

I am now running the make test on the openssl and when it gets to the

Generating a 2048 bit RSA private key

it seems to go into a endless loop of some sort.

So I am thinking my problem is with the latest openssl not openssh.

I compiled the same openssl code on our aix 6.1/64 system and it ran
the make test resulting with a "ALL TESTS SUCCESSFUL".

so I think you can close this call and i will talk to the openssl
people.

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bugzilla-daemon at bugzilla

May 10, 2012, 5:43 AM

Post #4 of 5 (346 views)
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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box [In reply to]

https://bugzilla.mindrot.org/show_bug.cgi?id=2006

Darren Tucker <dtucker [at] zip> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID

--- Comment #4 from Darren Tucker <dtucker [at] zip> 2012-05-10 22:43:14 EST ---
one thing that's probably worth a try is building openssl without
assembler optimizations ("./config no-asm"). anyway thanks for the
update, closing bug.

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bugzilla-daemon at bugzilla

May 10, 2012, 6:22 AM

Post #5 of 5 (343 views)
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[Bug 2006] AIX 5.2 /32 bit - a windows Putty session will not connect to AIX box [In reply to]

https://bugzilla.mindrot.org/show_bug.cgi?id=2006

--- Comment #5 from Dean Carter <DCarter [at] ballytech> 2012-05-10 23:22:38 EST ---
one last note:

building the openssl using the config no-asm did work. The openssl
does pass the make test with no errors

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