Linux: OpenSUSE - ssh timeout

trace for ssh
linux-nn5t:~ # strace -p 5117
Process 5117 attached - interrupt to quit
connect(3, {sa_family=AF_INET, sin_port=htons(22), sin_addr=inet_addr("192.168.55.100")}, 16) = -1 ETIMEDOUT (Connection timed out)
close(3) = 0
write(2, "ssh: connect to host 192.168.55."..., 67) = 67
exit_group(255) = ?
Process 5117 detached

Solution:

Stop firewall

/sbin/SuSEfirewall2 off

Linux: Oracle VirtualBox on OpenSUSE 11.4

aus@linux-nn5t:~/Desktop> su -
Password:
linux-nn5t:~ # /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules done
Uninstalling old VirtualBox DKMS kernel modules done
Trying to register the VirtualBox kernel modules using DKMS
Error! Your kernel headers for kernel 2.6.37.1-1.2-default cannot be found at
/lib/modules/2.6.37.1-1.2-default/build or /lib/modules/2.6.37.1-1.2-default/source.
failed
(Failed, trying without DKMS)
Recompiling VirtualBox kernel modules failed
(Look at /var/log/vbox-install.log to find out what went wrong)

--install dkms http://mirror.bjtu.edu.cn/packman/suse/openSUSE_Tumbleweed/Extra/noarch/dkms-2.1.1.2-0.pm.1.1.noarch.rpm

linux-nn5t:~ # which dkms
/usr/sbin/dkms
linux-nn5t:~ # /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules done
Uninstalling old VirtualBox DKMS kernel modules done
Trying to register the VirtualBox kernel modules using DKMS
Error! Your kernel headers for kernel 2.6.37.1-1.2-default cannot be found at
/lib/modules/2.6.37.1-1.2-default/build or /lib/modules/2.6.37.1-1.2-default/source.
failed
(Failed, trying without DKMS)
Recompiling VirtualBox kernel modules failed
(Look at /var/log/vbox-install.log to find out what went wrong)
linux-nn5t:~ # uname -r
2.6.37.1-1.2-default
linux-nn5t:~ # cd /lib/modules
linux-nn5t:/lib/modules # ls -la
total 36
drwxr-xr-x 7 root root 4096 Nov 7 06:23 .
drwxr-xr-x 19 root root 12288 Nov 7 05:40 ..
drwxr-xr-x 6 root root 4096 Nov 7 05:05 2.6.37.1-1.2-default
drwxr-xr-x 3 root root 4096 Nov 7 06:01 2.6.37.6-0.7-default
drwxr-xr-x 3 root root 4096 Nov 7 06:01 2.6.37.6-0.7-pae
drwxr-xr-x 3 root root 4096 Nov 7 06:01 2.6.37.6-0.7-trace
drwxr-xr-x 4 root root 4096 Nov 7 06:23 2.6.37.6-0.7-xen
linux-nn5t:/lib/modules # ls -la 2.6.37.1-1.2-default
total 2776
drwxr-xr-x 6 root root 4096 Nov 7 05:05 .
drwxr-xr-x 7 root root 4096 Nov 7 06:23 ..
drwxr-xr-x 12 root root 4096 Mar 2 2011 kernel
-rw-r--r-- 1 root root 650566 Nov 7 05:05 modules.alias
-rw-r--r-- 1 root root 630327 Nov 7 05:05 modules.alias.bin
-rw-r--r-- 1 root root 2912 Feb 22 2011 modules.builtin
-rw-r--r-- 1 root root 4205 Nov 7 05:05 modules.builtin.bin
-rw-r--r-- 1 root root 327336 Nov 7 05:05 modules.dep
-rw-r--r-- 1 root root 466072 Nov 7 05:05 modules.dep.bin
-rw-r--r-- 1 root root 248 Nov 7 05:05 modules.devname
-rw-r--r-- 1 root root 113584 Feb 22 2011 modules.order
-rw-r--r-- 1 root root 131 Nov 7 05:05 modules.softdep
-rw-r--r-- 1 root root 263785 Nov 7 05:05 modules.symbols
-rw-r--r-- 1 root root 336527 Nov 7 05:05 modules.symbols.bin
drwxr-xr-x 2 root root 4096 Mar 2 2011 systemtap
drwxr-xr-x 2 root root 4096 Mar 2 2011 updates
drwxr-xr-x 2 root root 4096 Mar 2 2011 vdso

--install kernel 2.6.37.1-1.2.2

linux-nn5t:/lib/modules # rpm -qa | grep kernel
kernel-default-2.6.37.1-1.2.2.i586
kernel-desktop-devel-2.6.37.1-1.2.2.i586
kernel-xen-2.6.37.6-0.7.1.i586
kernel-default-devel-2.6.37.1-1.2.2.i586
kernel-firmware-2.6.38-1.2.1.noarch
kernel-xen-devel-2.6.37.1-1.2.2.i586
kernel-devel-2.6.37.1-1.2.2.noarch

linux-nn5t:/lib/modules # ls -la 2.6.37.1-1.2-default
total 2776
drwxr-xr-x 6 root root 4096 Nov 8 01:39 .
drwxr-xr-x 9 root root 4096 Nov 8 01:39 ..
lrwxrwxrwx 1 root root 44 Nov 8 01:39 build -> /usr/src/linux-2.6.37.1-1.2-obj/i386/default
drwxr-xr-x 12 root root 4096 Mar 2 2011 kernel
-rw-r--r-- 1 root root 650566 Nov 7 05:05 modules.alias
-rw-r--r-- 1 root root 630327 Nov 7 05:05 modules.alias.bin
-rw-r--r-- 1 root root 2912 Feb 22 2011 modules.builtin
-rw-r--r-- 1 root root 4205 Nov 7 05:05 modules.builtin.bin
-rw-r--r-- 1 root root 327336 Nov 7 05:05 modules.dep
-rw-r--r-- 1 root root 466072 Nov 7 05:05 modules.dep.bin
-rw-r--r-- 1 root root 248 Nov 7 05:05 modules.devname
-rw-r--r-- 1 root root 113584 Feb 22 2011 modules.order
-rw-r--r-- 1 root root 131 Nov 7 05:05 modules.softdep
-rw-r--r-- 1 root root 263785 Nov 7 05:05 modules.symbols
-rw-r--r-- 1 root root 336527 Nov 7 05:05 modules.symbols.bin
lrwxrwxrwx 1 root root 27 Nov 8 01:39 source -> /usr/src/linux-2.6.37.1-1.2
drwxr-xr-x 2 root root 4096 Mar 2 2011 systemtap
drwxr-xr-x 2 root root 4096 Mar 2 2011 updates
drwxr-xr-x 2 root root 4096 Mar 2 2011 vdso
linux-nn5t:/lib/modules # /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules done
Uninstalling old VirtualBox DKMS kernel modules done
Trying to register the VirtualBox kernel modules using DKMS
Error! Bad return status for module build on kernel: 2.6.37.1-1.2-default (i586)
Consult the make.log in the build directory
/var/lib/dkms/vboxhost/4.1.6/build/ for more information.

DO YOU HAVE gcc INSTALLED???
failed
(Failed, trying without DKMS)
Recompiling VirtualBox kernel modules failed
(Look at /var/log/vbox-install.log to find out what went wrong)
linux-nn5t:/lib/modules # rpm -qa | grep gcc
libgcc45-4.5.1_20101208-9.8.i586
libstlport_gcc4-4.6.2-9.1.i586
--install gcc
linux-nn5t:/lib/modules # /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules done
Uninstalling old VirtualBox DKMS kernel modules done
Trying to register the VirtualBox kernel modules using DKMS done
Starting VirtualBox kernel modules done
linux-nn5t:/lib/modules # ^A