[Xen-users] Can not establish a SSH Connection into Dom0

[Peter Kramp <wohnung22767@xxxxxx>]

Hello everyone,

I own a small network: Three 'normal' Computers (Win or Debian) and a Xen 3.02 
(Debian) installation with three DomU's. SSH between the Computers works fine 
with one exception: I can establish a SSH connection from the DomU to the 
'normal' Computers and to Dom0 but I can not establish a SSH connection from 
Dom0 (or from a 'normal computer') INTO DomU. It is also not possible to 
establish a SSH connection between the DomU's

I searched a lot, modified my Xen several time but still have no idea where the 
problem could be. When I try to connect with SSH to a DomU the message alway 
is: "Read from socket failed: Connection reset by peer"

I run some services on the DomU's: At the moment a Samba server and a VPN 
Server and all services are working fine.

Then I reinstalled the SSH several times, everytime with deleting /root/.ssh/ 
and /etc/ssh/. For my DomU's I use the 

following mac adresses: AA:00:00:00:00:20, AA:00:00:00:00:21 and 
AA:00:00:00:00:22. I also tried to run the DomU's with random macadresses like 
00:16:3E:4E:76:E5. At last, I installed another ethernetcard into my computer, 
hide the ethernetcard from Dom0 and used it with its real macadress in a DomU 
and told SSHd to listen on this card. 

Nothing helps.

My entry in the xend-config.sxp is:

(xend-relocation-server yes)
(xend-relocation-hosts-allow '^localhost$')
(network-script network-bridge)
(vif-script vif-bridge)
(dom0-min-mem 196)
(dom0-cpus 0)

'brctl show' shows me:
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0
                                                        vif1.0
                                                        vif1.1
                                                        vif2.0
                                                        vif3.0

and a ifconfig in Dom0 shows me:

eth0      Link encap:Ethernet  HWaddr 00:04:AC:B8:88:27
          inet addr:192.168.100.4  Bcast:192.168.100.255  Mask:255.255.255.0
          inet6 addr: fe80::204:acff:feb8:8827/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6113 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4281 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:565494 (552.2 KiB)  TX bytes:701876 (685.4 KiB)

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:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:6497 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5126 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:614137 (599.7 KiB)  TX bytes:787386 (768.9 KiB)
          Interrupt:16 Base address:0x2080

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:92 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1266 errors:0 dropped:25 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:6464 (6.3 KiB)  TX bytes:130097 (127.0 KiB)

vif1.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:1276 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif2.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:631 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1534 errors:0 dropped:29 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:70109 (68.4 KiB)  TX bytes:165655 (161.7 KiB)

vif3.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:189 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1360 errors:0 dropped:46 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:18047 (17.6 KiB)  TX bytes:143611 (140.2 KiB)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1255 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:110734 (108.1 KiB)  TX bytes:468 (468.0 b)

Has anyone an idea, what should I modify as next? The computer, on which Xen is 
running, is an old IBM Netfinity 

with 2GB Ram and and some Ethernetcards.

Thank you in advance for every Tip,
-- 


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