Taylan Yetkin wrote:
> yes, I can.
If so, why don't you setup CVS via ssh tunnel:
connect like this:
ssh myuser@mysshserver -L 2401:<remote IP>:2401
after you've connected on your local machine you can setup the
CVSROOT=:pserver:anoncvs@localhost:2401/var/lib/cvsroot
and then you can:
cvs login
BTW, maybe you can use IP for your thing too via the regular CVS.
Cheers.
>
> Maxim kovgan wrote:
>> Taylan Yetkin wrote:
>>> I would like to give some update and ask help again:
>>> problem: unable to access remote cvs server (my desktop) from fermi
>>> machines
>>>
>>> [cmswn082] 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
>>> host
>>>
>>> [cmswn082] telnet neutralino.physics.uiowa.edu 2401
>>> Trying 128.255.34.167...
>>> telnet: Unable to connect to remote host: No route to host
>>>
>>>
>>> When I tried to see if port 2401 listens, I see that it does
>>> [root@neutralino]# netstat -an | grep LISTEN | grep 2401
>>> tcp 0 0 0.0.0.0:2401
>>> 0.0.0.0:* LISTEN
>>>
>>> [root@neutralino]# /sbin/chkconfig --list cvspserver
>>> cvspserver on
>>>
>>>
>>> My /etc/xinetd.d/cvspserver looks like
>>> service cvspserver
>>> {
>>> port = 2401
>>> socket_type = stream
>>> protocol = tcp
>>> wait = no
>>> user = root
>>> passenv = PATH
>>> server = /usr/bin/cvs
>>> server_args = -f --allow-root=/var/lib/cvsroot pserver
>>> log_type = FILE /var/log/cvspserver
>>> env = HOME=/usr/cvs
>>> disable = no
>>> }
>>>
>>> and hosts.allow and host.deny
>>>
>>> hosts.allow:
>>>
>>> cvs: LOCAL
>>>
>>> hosts.deny: empty
>>>
>>>
>>> How can I find out the reason for no connection?
>>
>> can you connect to that machine via SSH ?
>>
>>
>>
>>>
>>> Thanks,
>>> Taylan
>>>
>>>
>>>
>>> Maxim kovgan wrote:
>>>> well, go and search for the firewalls on the way now.
>>>> with a clear conscience.
>>>> :)
>>>>
>>>>
>>>>
>>>> Taylan Yetkin wrote:
>>>>> I couldn't find how to capture ipv6 packets but I disabled it to
>>>>> see if it makes any difference. Actually I still get the same
>>>>>
>>>>
>>>>
>>>> assuming your interface of question is eth0:
>>>> tcpdump -vvv -i eth0 -w results.tcpdump ip6
>>>>
>>>> this will run as much as you want, and will print how many packets
>>>> has it got, once in a while.
>>>>
>>>> when you have enough, you stop it with ^C, and go and watch the
>>>> results of the capture via wireshark, or ethereal or any other
>>>> graphical tool.
>>>>
>>>> regards.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> cvs [login aborted]: connect to
>>>>> neutralino.physics.uiowa.edu(128.255.34.167):2401 failed: No route
>>>>> to host
>>>>>
>>>>> message. telnet is also giving similar problem:
>>>>>
>>>>> telnet neutralino.physics.uiowa.edu 2401
>>>>> Trying 128.255.34.167...
>>>>> telnet: Unable to connect to remote host: No route to host
>>>>>
>>>>> :
>>>>>
>>>>>
>>>>> Maxim kovgan wrote:
>>>>>> Can you try and capture any ipv6 packets trying to leave your
>>>>>> computer when you're trying to login into cvs or to do other
>>>>>> things with cvs ?
>>>>>>
>>>>>>
>>>>>> IF you find anything running, disable ipv6.
>>>>>> (refer to your distribution's manual on how to do this.)
>>>>>>
>>>>>> Cheers.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Taylan Yetkin wrote:
>>>>>>> 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.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>
>>
>
--
Maxim Kovgan,
Distributed Systems and Data Mining Laboratory
Computer Science, Technion
http://dsl.cs.technion.ac.il
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