Networking help

Marc Evans Marc at SoftwareHackery.Com
Thu Dec 12 15:19:31 EST 2002


I have seen that happen when a Cisco has packet filters turned on and is
blocking your ssh attempt.

- Marc

On Thu, 12 Dec 2002 pll at lanminds.com wrote:

>
> Does this make sense to *anyone*?
>
> This information is from a system currently not responding to pings
> (as described previously in the thread).
>
> # ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:D0:A8:00:D6:DE
>           inet addr:192.168.10.11  Bcast:192.168.10.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:275555 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:276739 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:52875228 (50.4 MiB)  TX bytes:331924088 (316.5 MiB)
>           Interrupt:10
>
> eth1      Link encap:Ethernet  HWaddr 00:D0:A8:00:D6:DF
>           inet addr:10.241.38.11  Bcast:10.241.38.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:10902420 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8356304 errors:0 dropped:0 overruns:10 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:2088329274 (1.9 GiB)  TX bytes:1876519092 (1.7 GiB)
>           Interrupt:5 Base address:0x2000
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:9818 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:9818 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:21383856 (20.3 MiB)  TX bytes:21383856 (20.3 MiB)
>
> # netstat -rn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
> 10.241.38.0     0.0.0.0         255.255.255.0   U        40 0          0 eth1
> 192.168.10.0    0.0.0.0         255.255.255.0   U        40 0          0 eth0
> 0.0.0.0         10.241.38.1     0.0.0.0         UG       40 0          0 eth1
> 0.0.0.0         192.168.10.1    0.0.0.0         UG       40 0          0 eth0
>
> # ping 168.159.36.90
> PING 168.159.36.90 (168.159.36.90): 56 data bytes
> 64 bytes from 168.159.36.90: icmp_seq=0 ttl=254 time=0.4 ms
> 64 bytes from 168.159.36.90: icmp_seq=1 ttl=254 time=0.2 ms
>
> --- 168.159.36.90 ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max = 0.2/0.3/0.4 ms
> bldsvr:~# ssh -l pll 168.159.36.90
> ssh: connect to address 168.159.36.90 port 22: No route to host
>
> # traceroute 168.159.36.90
> traceroute to 168.159.36.90 (168.159.36.90), 30 hops max, 38 byte packets
>  1  10.241.38.2 (10.241.38.2)  2.563 ms  0.452 ms  0.346 ms
>  2  168.159.36.90 (168.159.36.90)  0.191 ms  0.208 ms  0.177 ms
>
> --
>
> Seeya,
> Paul
> --
> Key fingerprint = 1660 FECC 5D21 D286 F853  E808 BB07 9239 53F1 28EE
>
> 	It may look like I'm just sitting here doing nothing,
>    but I'm really actively waiting for all my problems to go away.
>
> 	 If you're not having fun, you're not doing it right!
>
>
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>




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