Re: SSH can't connect

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  On 10/02/2010 04:44 PM, Jim wrote:
>    On 10/02/2010 04:02 PM, Roberto Ragusa wrote:
>> Jim wrote:
>>>     On 10/02/2010 01:11 PM, Roberto Ragusa wrote:
>>>> Jim wrote:
>>>>>      On 10/02/2010 12:32 PM, Jim wrote:
>>>>>>       Wether I run NX (nomachine) or SSH I get the same error message, no
>>>>>> matter what host I try to connect to.
>>>>>>
>>>>>> And on the host servers SSHd is running.
>>>>>> And so is the Client box.
>>>>>>
>>>>>> Running  NX
>>>>>> Error message:   ssh: connect to host 70.236.39.98 port 22: Connection
>>>>>> timed out
>>>>>>
>>>>>> Running $ ssh [email protected]
>>>>>> ErrorMessage:    ssh: connect to host 70.236.39.98 port 22: Connection
>>>>>> timed out
>>>>>>
>>>>> I forgot to add;
>>>>>
>>>>> These are all FC13 boxes, clients and hosts and the Firewall in each box
>>>>> has SSH check as Trusted Service.
>>>> Try keeping a running
>>>>      tcpdump -i eth0 -n -n
>>>> in a different terminal before invoking ssh.
>>>>
>>>> You should be able to see if packets are exchanged between the machines.
>>>> If you see your packets but no packet from the other machine, one of the
>>>> firewalls is interfering. You can sniff on the other side too for more
>>>> information.
>>>>
>>> Running your command I get a steady output of IP's I have never seen,
>>> example below
>>>
>>> 14:05:10.307914 ARP, Request who-has 69.243.174.143 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.331512 ARP, Request who-has 69.243.175.116 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.331695 ARP, Request who-has 71.25.91.72 tell 71.25.88.1, length 46
>>> 14:05:10.332746 ARP, Request who-has 69.243.175.114 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.386862 ARP, Request who-has 69.243.170.149 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.566254 ARP, Request who-has 69.243.174.15 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.576918 ARP, Request who-has 73.45.175.36 tell 73.45.168.1,
>>> length 46
>>> 14:05:10.622413 ARP, Request who-has 69.243.174.176 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.625877 ARP, Request who-has 73.44.155.236 tell 73.44.152.1,
>>> length 46
>>> 14:05:10.667900 ARP, Request who-has 69.243.175.116 tell 69.243.168.1,
>>> length 46
>>> 14:05:10.681633 ARP, Request who-has 69.243.175.114 tell 69.243.168.1,
>>> length 46
>>>
>> Quite strange output: ARP requests for 69.*, 71.* and 73.* networks
>> and nothing else. You only pasted 0.3 seconds of activity. Was there
>> something for 70.236.39.98 when you tried to ssh?
>> What kind of network connections do you have?
>> Is the 70.236.39.98 machine supposed to be contacted on eth0?
>>
>> Would you give us some info about your network connection?
>>     ifconfig -a
>>     route -n
>>
>> Thanks.
>
>
> # ifconfig -a
> eth0      Link encap:Ethernet  HWaddr 00:1D:72:A5:DD:B5
>             inet addr:69.243.171.15  Bcast:69.243.175.255  Mask:255.255.248.0
>             inet6 addr: fe80::21d:72ff:fea5:ddb5/64 Scope:Link
>             UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>             RX packets:509708 errors:0 dropped:0 overruns:0 frame:0
>             TX packets:23265 errors:0 dropped:0 overruns:0 carrier:0
>             collisions:0 txqueuelen:1000
>             RX bytes:59884381 (57.1 MiB)  TX bytes:2849745 (2.7 MiB)
>             Interrupt:28 Base address:0xc000
>
> 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:153 errors:0 dropped:0 overruns:0 frame:0
>             TX packets:153 errors:0 dropped:0 overruns:0 carrier:0
>             collisions:0 txqueuelen:0
>             RX bytes:9086 (8.8 KiB)  TX bytes:9086 (8.8 KiB)
>
> # route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> 69.243.168.0    0.0.0.0         255.255.248.0   U     1      0        0 eth0
> 0.0.0.0         69.243.168.1    0.0.0.0         UG    0      0        0 eth0
>
>
#  tcpdump -i eth0 -n -n
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
16:56:59.415664 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:56:59.586430 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:56:59.696286 ARP, Request who-has 71.25.90.146 tell 71.25.88.1, length 46
16:56:59.697488 ARP, Request who-has 98.228.201.211 tell 98.228.200.1, 
length 46
16:56:59.761074 ARP, Request who-has 69.243.174.73 tell 69.243.168.1, 
length 46
16:56:59.773917 ARP, Request who-has 69.243.174.121 tell 69.243.168.1, 
length 46
16:56:59.935273 ARP, Request who-has 69.243.173.73 tell 69.243.168.1, 
length 46
16:56:59.954552 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:56:59.979013 ARP, Request who-has 69.243.171.85 tell 69.243.168.1, 
length 46
16:57:00.138647 ARP, Request who-has 68.58.104.82 tell 68.58.104.1, 
length 46
16:57:00.206853 ARP, Request who-has 98.228.201.200 tell 98.228.200.1, 
length 46
16:57:00.247196 ARP, Request who-has 98.228.204.64 tell 98.228.200.1, 
length 46
16:57:00.305968 ARP, Request who-has 73.45.170.17 tell 73.45.168.1, 
length 46
16:57:00.332147 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:00.369043 ARP, Request who-has 69.243.172.74 tell 69.243.168.1, 
length 46
16:57:00.390081 ARP, Request who-has 73.45.168.83 tell 73.45.168.1, 
length 46
16:57:00.423539 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:00.434261 ARP, Request who-has 73.45.174.74 tell 73.45.168.1, 
length 46
16:57:00.498231 ARP, Request who-has 73.44.154.33 tell 73.44.152.1, 
length 46
16:57:00.561708 ARP, Request who-has 68.58.105.101 tell 68.58.104.1, 
length 46
16:57:00.571983 ARP, Request who-has 69.243.170.149 tell 69.243.168.1, 
length 46
16:57:00.732475 ARP, Request who-has 68.57.226.17 tell 68.57.224.1, 
length 46
16:57:00.765076 ARP, Request who-has 68.57.225.3 tell 68.57.224.1, length 46
16:57:00.786518 ARP, Request who-has 98.193.51.254 tell 98.193.50.1, 
length 46
16:57:00.842740 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:00.862463 ARP, Request who-has 73.45.172.106 tell 73.45.168.1, 
length 46
16:57:01.076169 ARP, Request who-has 68.57.226.85 tell 68.57.224.1, 
length 46
16:57:01.186882 ARP, Request who-has 69.243.174.134 tell 69.243.168.1, 
length 46
16:57:01.190692 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:01.275670 ARP, Request who-has 68.53.190.62 tell 68.53.188.1, 
length 46
16:57:01.382940 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:01.425418 ARP, Request who-has 69.243.174.143 tell 69.243.168.1, 
length 46
16:57:01.523246 ARP, Request who-has 98.228.204.64 tell 98.228.200.1, 
length 46
16:57:01.525805 ARP, Request who-has 73.45.173.98 tell 73.45.168.1, 
length 46
16:57:01.541264 ARP, Request who-has 73.45.175.87 tell 73.45.168.1, 
length 46
16:57:01.613350 ARP, Request who-has 68.53.191.125 tell 68.53.188.1, 
length 46
16:57:01.851911 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:01.960023 IP 69.243.171.15.54421 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:01.966901 ARP, Request who-has 68.57.227.212 tell 68.57.224.1, 
length 46
16:57:01.995638 ARP, Request who-has 69.243.168.136 tell 69.243.168.1, 
length 46
16:57:02.210621 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:02.307585 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:02.342761 ARP, Request who-has 71.25.90.72 tell 71.25.88.1, length 46
16:57:02.371070 ARP, Request who-has 71.25.89.116 tell 71.25.88.1, length 46
16:57:02.427713 ARP, Request who-has 68.57.226.158 tell 68.57.224.1, 
length 46
16:57:02.723353 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:02.824176 ARP, Request who-has 69.243.175.158 tell 69.243.168.1, 
length 46
16:57:02.875673 ARP, Request who-has 69.243.174.157 tell 69.243.168.1, 
length 46
16:57:02.881652 ARP, Request who-has 68.53.189.106 tell 68.53.188.1, 
length 46
16:57:03.061478 IP 69.243.171.15.54230 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:03.068325 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:03.092348 ARP, Request who-has 69.243.169.194 tell 69.243.168.1, 
length 46
16:57:03.100920 ARP, Request who-has 73.45.174.77 tell 73.45.168.1, 
length 46
16:57:03.110783 ARP, Request who-has 98.228.203.213 tell 98.228.200.1, 
length 46
16:57:03.330489 ARP, Request who-has 69.243.175.205 tell 69.243.168.1, 
length 46
16:57:03.533885 ARP, Request who-has 68.58.105.101 tell 68.58.104.1, 
length 46
16:57:03.575908 ARP, Request who-has 68.57.224.67 tell 68.57.224.1, 
length 46
16:57:03.622667 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:03.712073 IP 96.183.220.1.67 > 255.255.255.255.68: BOOTP/DHCP, 
Reply, length 300
16:57:03.842789 ARP, Request who-has 73.45.172.106 tell 73.45.168.1, 
length 46
16:57:03.892976 ARP, Request who-has 68.58.106.175 tell 68.58.104.1, 
length 46
16:57:03.928588 ARP, Request who-has 68.53.191.87 tell 68.53.188.1, 
length 46
16:57:03.981374 ARP, Request who-has 69.243.170.149 tell 69.243.168.1, 
length 46
16:57:03.997267 ARP, Request who-has 68.58.105.232 tell 68.58.104.1, 
length 46
16:57:04.000236 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:04.076238 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:04.119096 ARP, Request who-has 73.45.173.22 tell 73.45.168.1, 
length 46
16:57:04.163089 IP 69.243.171.15.45487 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:04.286451 ARP, Request who-has 68.57.225.3 tell 68.57.224.1, length 46
16:57:04.307887 ARP, Request who-has 73.45.174.24 tell 73.45.168.1, 
length 46
16:57:04.432330 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:04.442184 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:04.486383 ARP, Request who-has 68.53.190.183 tell 68.53.188.1, 
length 46
16:57:04.505693 ARP, Request who-has 73.45.173.98 tell 73.45.168.1, 
length 46
16:57:04.534011 ARP, Request who-has 68.53.191.125 tell 68.53.188.1, 
length 46
16:57:04.585934 ARP, Request who-has 69.243.173.73 tell 69.243.168.1, 
length 46
16:57:04.689344 ARP, Request who-has 73.45.170.30 tell 73.45.168.1, 
length 46
16:57:04.782448 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:04.821479 ARP, Request who-has 68.57.227.212 tell 68.57.224.1, 
length 46
16:57:04.958797 ARP, Request who-has 69.243.169.194 tell 69.243.168.1, 
length 46
16:57:04.976388 ARP, Request who-has 69.243.168.136 tell 69.243.168.1, 
length 46
16:57:05.091387 ARP, Request who-has 73.45.175.28 tell 73.45.168.1, 
length 46
16:57:05.229113 ARP, Request who-has 71.25.89.116 tell 71.25.88.1, length 46
16:57:05.264500 IP 69.243.171.15.42038 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:05.314496 ARP, Request who-has 68.57.226.125 tell 68.57.224.1, 
length 46
16:57:05.455233 ARP, Request who-has 68.57.227.212 tell 68.57.224.1, 
length 46
16:57:05.493832 ARP, Request who-has 68.57.226.158 tell 68.57.224.1, 
length 46
16:57:05.547908 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:05.611407 ARP, Request who-has 69.243.175.205 tell 69.243.168.1, 
length 46
16:57:05.668042 ARP, Request who-has 69.243.175.187 tell 69.243.168.1, 
length 46
16:57:05.695922 ARP, Request who-has 71.25.89.79 tell 71.25.88.1, length 46
16:57:05.711371 ARP, Request who-has 98.228.201.211 tell 98.228.200.1, 
length 46
16:57:05.729392 ARP, Request who-has 73.45.174.78 tell 73.45.168.1, 
length 46
16:57:05.760292 ARP, Request who-has 69.243.174.73 tell 69.243.168.1, 
length 46
16:57:05.784735 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:05.857692 ARP, Request who-has 69.243.173.40 tell 69.243.168.1, 
length 46
16:57:05.979124 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:06.055927 ARP, Request who-has 98.228.200.238 tell 98.228.200.1, 
length 46
16:57:06.240130 ARP, Request who-has 68.57.227.158 tell 68.57.224.1, 
length 46
16:57:06.280316 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:06.355133 ARP, Request who-has 69.243.174.162 tell 69.243.168.1, 
length 46
16:57:06.365532 IP 69.243.171.15.44654 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:06.400468 ARP, Request who-has 73.45.174.46 tell 73.45.168.1, 
length 46
16:57:06.421898 ARP, Request who-has 24.14.75.28 tell 24.14.74.1, length 46
16:57:06.469113 ARP, Request who-has 68.57.224.67 tell 68.57.224.1, 
length 46
16:57:06.472956 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:06.518062 ARP, Request who-has 73.44.154.33 tell 73.44.152.1, 
length 46
16:57:06.561369 ARP, Request who-has 69.243.172.74 tell 69.243.168.1, 
length 46
16:57:06.606415 ARP, Request who-has 71.25.88.120 tell 71.25.88.1, length 46
16:57:06.635600 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:06.827390 ARP, Request who-has 69.243.173.244 tell 69.243.168.1, 
length 46
16:57:06.980999 ARP, Request who-has 69.243.170.149 tell 69.243.168.1, 
length 46
16:57:07.020457 ARP, Request who-has 68.57.226.85 tell 68.57.224.1, 
length 46
16:57:07.078826 ARP, Request who-has 73.45.173.22 tell 73.45.168.1, 
length 46
16:57:07.146609 ARP, Request who-has 69.243.171.85 tell 69.243.168.1, 
length 46
16:57:07.253030 ARP, Request who-has 73.45.170.35 tell 73.45.168.1, 
length 46
16:57:07.333689 ARP, Request who-has 68.58.105.115 tell 68.58.104.1, 
length 46
16:57:07.466482 IP 69.243.171.15.36786 > 192.168.1.127.161:  
GetRequest(34)  .1.3.6.1.4.1.236.11.5.1.1.1.26.0
16:57:07.492448 ARP, Request who-has 98.228.204.64 tell 98.228.200.1, 
length 46
16:57:07.565820 ARP, Request who-has 73.45.169.103 tell 73.45.168.1, 
length 46
16:57:07.605718 ARP, Request who-has 69.243.172.74 tell 69.243.168.1, 
length 46
16:57:07.608225 ARP, Request who-has 68.57.224.71 tell 68.57.224.1, 
length 46
16:57:07.631456 ARP, Request who-has 68.57.226.27 tell 68.57.224.1, 
length 46
16:57:07.641751 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:07.673072 ARP, Request who-has 98.193.50.124 tell 98.193.50.1, 
length 46
16:57:07.700956 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:07.716840 ARP, Request who-has 73.45.170.30 tell 73.45.168.1, 
length 46
16:57:07.743873 ARP, Request who-has 69.243.169.194 tell 69.243.168.1, 
length 46
16:57:07.794076 ARP, Request who-has 68.53.191.86 tell 68.53.188.1, 
length 46
16:57:07.861456 ARP, Request who-has 69.243.175.138 tell 69.243.168.1, 
length 46
16:57:07.912922 ARP, Request who-has 98.228.201.16 tell 98.228.200.1, 
length 46
16:57:07.982013 ARP, Request who-has 73.45.175.28 tell 73.45.168.1, 
length 46
16:57:08.033071 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:08.034293 ARP, Request who-has 69.243.173.171 tell 69.243.168.1, 
length 46
16:57:08.142485 ARP, Request who-has 73.45.171.99 tell 73.45.168.1, 
length 46
16:57:08.211986 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:08.317543 ARP, Request who-has 68.57.226.125 tell 68.57.224.1, 
length 46
16:57:08.318758 ARP, Request who-has 68.57.225.126 tell 68.57.224.1, 
length 46
16:57:08.366884 ARP, Request who-has 69.243.175.99 tell 69.243.168.1, 
length 46
16:57:08.367070 ARP, Request who-has 73.45.183.117 tell 73.45.176.1, 
length 46
16:57:08.371155 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:08.430391 ARP, Request who-has 69.243.168.198 tell 69.243.168.1, 
length 46
16:57:08.550532 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:08.556949 ARP, Request who-has 73.45.175.106 tell 73.45.168.1, 
length 46
16:57:08.583990 ARP, Request who-has 68.57.227.247 tell 68.57.224.1, 
length 46
16:57:08.731170 ARP, Request who-has 68.53.190.183 tell 68.53.188.1, 
length 46
16:57:08.732404 ARP, Request who-has 73.45.174.78 tell 73.45.168.1, 
length 46
16:57:08.732813 ARP, Request who-has 69.243.175.138 tell 69.243.168.1, 
length 46
16:57:08.765486 ARP, Request who-has 71.25.89.79 tell 71.25.88.1, length 46
16:57:09.345289 ARP, Request who-has 24.14.75.28 tell 24.14.74.1, length 46
16:57:09.353727 ARP, Request who-has 73.45.174.46 tell 73.45.168.1, 
length 46
16:57:09.392379 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:09.440844 ARP, Request who-has 68.53.190.15 tell 68.53.188.1, 
length 46
16:57:09.545543 ARP, Request who-has 69.243.172.74 tell 69.243.168.1, 
length 46
16:57:09.721029 ARP, Request who-has 71.25.89.101 tell 71.25.88.1, length 46
16:57:09.743761 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:09.900810 ARP, Request who-has 69.243.170.207 tell 69.243.168.1, 
length 46
16:57:09.955301 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:09.961294 ARP, Request who-has 68.53.191.204 tell 68.53.188.1, 
length 46
16:57:09.991327 ARP, Request who-has 71.25.89.84 tell 71.25.88.1, length 46
16:57:10.209747 ARP, Request who-has 69.243.173.73 tell 69.243.168.1, 
length 46
16:57:10.252649 ARP, Request who-has 68.57.226.158 tell 68.57.224.1, 
length 46
16:57:10.270273 ARP, Request who-has 73.45.170.35 tell 73.45.168.1, 
length 46
16:57:10.282667 ARP, Request who-has 68.58.105.115 tell 68.58.104.1, 
length 46
16:57:10.329025 ARP, Request who-has 69.243.175.114 tell 69.243.168.1, 
length 46
16:57:10.343615 ARP, Request who-has 73.45.175.119 tell 73.45.168.1, 
length 46
16:57:10.382221 ARP, Request who-has 69.243.175.116 tell 69.243.168.1, 
length 46
16:57:10.517386 ARP, Request who-has 68.53.190.119 tell 68.53.188.1, 
length 46
16:57:10.542693 ARP, Request who-has 69.243.175.239 tell 69.243.168.1, 
length 46
16:57:10.567569 ARP, Request who-has 73.45.172.23 tell 73.45.168.1, 
length 46
16:57:10.579155 ARP, Request who-has 73.45.173.51 tell 73.45.168.1, 
length 46
16:57:10.599762 ARP, Request who-has 68.57.226.27 tell 68.57.224.1, 
length 46
^C
172 packets captured
172 packets received by filter
0 packets dropped by kernel

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