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. >>>> >>>> >>> >>> >> > >