Both ping and traceroute  the host from fermi machines returns  
success.  I need some time to understand the use of tcpdump.
thanks,
Taylan

Maxim kovgan wrote:
> John Summerfield wrote:
>> Maxim kovgan wrote:
>>> John Summerfield wrote:
>>>> Taylan Yetkin wrote:
>>>>> Hi,
>>>>> I installed a cvs repository in my local SL machine and trying to 
>>>>> connect
>>>>>  it
>>>>> from fermi machines. I get the following error:
>>>>>
>>>>> [cmswn085> cvs login
>>>>> Logging in to 
>>>>> :pserver:[log in to unmask]:2401/var/lib/
>>>>> cvsroot
>>>>> CVS password:
>>>>> cvs [login aborted]: connect to
>>>>> neutralino.physics.uiowa.edu(128.255.34.167):2401 failed: No route 
>>>>> to hos
>>>>> t
>>>>
>>>> This is a routing/firewall problem. the cvs command asks for the 
>>>> password before trying to connect.
>>>>
>>>> 07:02 [summer@numbat ~]$ cvs  -d 
>>>> :pserver:anoncvs@localhost:2401/var/lib/ login
>>>> Logging in to :pserver:anoncvs@localhost:2401/var/lib
>>>> CVS password:
>>>> cvs [login aborted]: connect to [localhost]:2401 failed: Connection 
>>>> refused
>>>> 07:03 [summer@numbat ~]$
>>>
>>> It's most probably tcpwrappers
>>
>> No. That allows a connexion, then rejects it. You don't get "no 
>> route" or "refused messages."
>
> AFAIK tcpwrappers refuse too.
> but I somehow missed the no route to.. :)
> and you're right! it needs some investigation:
>
> 1. ping to the host
> 2. traceroute to the host.
>
> if you sporadically get the no route problem, it means you have ... a 
> routing problem :)
>
> after you finished up with it, you can continue and trouble shoot.
> routing problem can be cause by your university/enterprise firewall too.
>
>
> you can also investigate with tcpdump, which is a great sniffer.
>
> Good luck!
>
>
>
>>
>> "reset" is more probable.
>>
>>
>
>