| rocket777 |
10-21-2007 03:59 PM |
ubuntu 7.10 aft upgrade f/7.04 , rdesktop, ssh, refuse connections
After an upgrade from 7.04 to 7.10 ubuntu, both my remote desktop and ssh connections are refused. Any thoughts?
netstat shows the same thing in both 7.04 and 7.10 (I have a clone of 7.04 on a second drive so I can go back to before the upgrade) on 7.04 it all works just fine.
(BTW, is this really using ip version 6, is that what tcp6 means?, I don't know version 6 at all, so I'm confused)
Code:
tcp6 0 0 :::5900 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
Using ethereal, I can see an ICMP packet comming back from ubuntu to the system trying to connect, which is pretty much saying the port number 22 is unreachable. I get the same with rdesktop and port 5900.
Here's a dump, of an attempt to connect via ssh:
Code:
Internet Control Message Protocol
Type: 3 (Destination unreachable)
Code: 3 (Port unreachable)
Checksum: 0x813b (correct)
Internet Protocol, Src Addr: 192.168.1.100 (192.168.1.100), Dst Addr: 192.168.1.103 (192.168.1.103)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 48
Identification: 0x33ac
Flags: 0x04
.1.. = Don't fragment: Set
..0. = More fragments: Not set
Fragment offset: 0
Time to live: 128
Protocol: TCP (0x06)
Header checksum: 0x4300 (correct)
Source: 192.168.1.100 (192.168.1.100)
Destination: 192.168.1.103 (192.168.1.103)
Transmission Control Protocol, Src Port: 4157 (4157), Dst Port: 22 (22), Seq: 3603485568, Ack: 0, Len: 0
Source port: 4157 (4157)
Destination port: 22 (22)
Sequence number: 3603485568
Header length: 28 bytes
Flags: 0x0002 (SYN)
0... .... = Congestion Window Reduced (CWR): Not set
.0.. .... = ECN-Echo: Not set
..0. .... = Urgent: Not set
...0 .... = Acknowledgment: Not set
.... 0... = Push: Not set
.... .0.. = Reset: Not set
.... ..1. = Syn: Set
.... ...0 = Fin: Not set
Window size: 16384
Checksum: 0x052f (correct)
Options: (8 bytes)
Maximum segment size: 1260 bytes
NOP
NOP
SACK permitted
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