Hi,
ifconfig in the host returns:

eth0      Link encap:Ethernet  HWaddr 00:19:D1:25:1F:C9
          inet addr:128.255.34.167  Bcast:128.255.35.255  Mask:255.255.252.0
          inet6 addr: fe80::219:d1ff:fe25:1fc9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:190785 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55961 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:57983176 (55.2 MiB)  TX bytes:11357915 (10.8 MiB)
          Base address:0xecc0 Memory:dffe0000-e0000000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5670 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5670 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:10405386 (9.9 MiB)  TX bytes:10405386 (9.9 MiB)

while netstat -nr returns


Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt 
Iface
128.255.32.0    0.0.0.0         255.255.252.0   U         0 0          0 
eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 
eth0
0.0.0.0         128.255.32.1    0.0.0.0         UG        0 0          0 
eth0


Taylan



Maxim kovgan wrote:
> Taylan Yetkin wrote:
>> Both ping and traceroute  the host from fermi machines returns  
>> success.  I need some time to understand the use of tcpdump.
>> thanks,
>> Taylan
>
> can you post your ifconfig of the listening interface ?
>
>
> a routing table would be nice too:
> netstat -nr
>
> you can of course scramble the IP addresses.
>
>
>
>>
>> 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.
>>>>
>>>>
>>>
>>>
>>
>
>