Re: ssh tunneling client settings

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On 02/24/2010 01:32 PM, Andrew Haley wrote:
> On 02/24/2010 06:23 PM, Christoph Höger wrote:
>    
>> Am Mittwoch, den 24.02.2010, 15:57 +0000 schrieb Andrew Haley:
>>      
>>> On 02/24/2010 02:41 PM, Christoph Höger wrote:
>>>        
>>>> Hi guys,
>>>>
>>>> are there any special client settings one needs to have for ssh
>>>> tunneling?
>>>>
>>>> I have the classical setup: machines A1 and A2 (both fedora 12) should
>>>> access C which is only accessible from B1 (kerberos) or B2 (private key)
>>>>
>>>> So on A1 I used to
>>>>
>>>> ssh -L 10080:C:80 B1
>>>>
>>>> or
>>>>
>>>> ssh -L 10080:C:80 B2
>>>>
>>>> Both work fine.
>>>>
>>>> But on A2:
>>>>
>>>> ssh -L 10080:C:80 B1/B2
>>>>
>>>> logs me in to the machine but every connection attempt returns:
>>>>
>>>> channel 3: open failed: administratively prohibited: open failed
>>>>
>>>> Why? What kind of weird setting is this?
>>>>          
>>> Anything in the logs?  Looks like a policy issue to me.
>>>        
>> What logs do you mean? This is a client issue. Does the ssh client write
>> to local log files?
>>      
> No.  I think it may be a SELinux policy issue.
>
> See if anything is logged in any of the log files when you get this
> message.
>
> Also, make very sure that AllowTcpForwarding is set in sshd_config
>
> Make sure no-one else has this port open.
>
> Check the addresses.
>
> Andrew.
>    
What version
rpm -q selinux-policy
ausearch -m avc -ts recent

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