Change web page icon in Speed Dial - Opera 31.0

How to change web page icon in Opera's Speed Dial

to look like webpage screenshot:

Click on the icon from speed dial you want to change:

The web page is loaded:

  

 

Click on the heart icon on the right side:

This icon is either red - if already present in bookmarks or grey if not in bookmarks.

Blue icon in the right corner means this link is already in speed dial.

To change the picture in speed dial click on arrows in horizontal ribbon and that's it. The icon is immediately changed no need to confirm anything. Just click outside of this balloon. 

Dell DRAC "Error when reading from SSL socket connection"

If you have this error when connecting to Dell DRAC console via web page (java based):

Error when reading from SSL socket connection


Then you either follow this post:
https://www.crc.id.au/2015/01/31/java-update-broke-the-dell-drac-5-remote-management-cards/


or if you don't want to expose your computer, then you can download your DRAC SSL certificate
and upload it to your java.


I have Linux Dell server and Linux laptop with IcedTea instead of Oracle Java in this example :

1) First go to your Dell server to download the certificate:

$ racadm sslcertdownload -t 1 -f file.txt

Note:
Command description:
http://web.mit.edu/cron/documentation/dell-server-admin/en/DRAC_5/racugaa.htm#47494


2) scp it to your laptop


3) Start IcedTea  Web Control Panel
/usr/bin/itweb-settings


4) Click Certificates, User Certificates and Import Certificate from the file.txt

Change IP address and netmask in Solaris 11

[root@server:/ ]$ ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
net0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 32.119.202.220 netmask fffffff8 broadcast 32.119.202.223
ether 0:10:e0:f:d5:16
net8: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 169.254.182.77 netmask ffffff00 broadcast 169.254.182.255
ether 2:21:28:57:47:17



List current IP setting:

[root@server:/ ]$ ipadm
NAME CLASS/TYPE STATE UNDER ADDR
lo0 loopback ok -- --
lo0/v4 static ok -- 127.0.0.1/8
lo0/v6 static ok -- ::1/128
net0 ip ok -- --
net0/v4 static ok -- 32.119.202.220/29
net0/v6 addrconf ok -- fe80::210:e0ff:fe0f:d516/10
net8 ip ok -- --
net8/v4 static ok -- 169.254.182.77/24 <-----------change this
[root@server:/ ]$





Let's chage netmask on interface net8/v4 to /29:





[root@server:/ ]$ ipadm set-addrprop -p prefixlen=29 net8/v4






[root@server:/ ]$ ipadm
NAME CLASS/TYPE STATE UNDER ADDR
lo0 loopback ok -- --
lo0/v4 static ok -- 127.0.0.1/8
lo0/v6 static ok -- ::1/128
net0 ip ok -- --
net0/v4 static ok -- 32.119.202.220/29
net0/v6 addrconf ok -- fe80::210:e0ff:fe0f:d516/10
net8 ip ok -- --
net8/v4 static ok -- 169.254.182.77/29 <---------------changed
[root@server:/ ]$



Confirm:


[root@server:/ ]$ cat /etc/ipadm/ipadm-DefaultFixed.conf
_ifname=lo0;_aobjname=lo0/v4; _ipv4saddr=string,127.0.0.1;prefixlen=string,8;up=string,yes;
_ifname=lo0; _family=string,2,26;_class=uint64,2;
_ifname=lo0;_aobjname=lo0/v6; _ipv6saddr=string,::1;prefixlen=string,128;up=string,yes;
_ifname=net0; _family=string,2,26;_class=uint64,0;
_ifname=net0;_aobjname=net0/v4; _ipv4saddr=string,32.119.202.220;prefixlen=string,29;up=string,yes;
_ifname=net0;_aobjname=net0/v6; _intfid=string,::;prefixlen=string,0;_stateless=string,yes;_stateful=string,yes;
_ifname=net8; _family=string,2,26;_class=uint64,0;
_aobjname=net8/v4;_ifname=net8; _ipv4saddr=string,169.254.182.77;up=string,yes;prefixlen=string,29;








[root@server:/ ]$ ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
net0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 32.119.202.220 netmask fffffff8 broadcast 32.119.202.223
ether 0:10:e0:f:d5:16
net8: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 169.254.182.77 netmask fffffff8 broadcast 169.254.182.79
ether 2:21:28:57:47:17




Converersion from Solaris HEX format:


fffffffc 255.255.255.252 /30
fffffff8 255.255.255.248 /29
fffffff0 255.255.255.240 /28
ffffffe0 255.255.255.224 /27
ffffffc0 255.255.255.192 /26
ffffff80 255.255.255.128 /25
ffffff00 255.255.255.0 /24
fffffe00 255.255.254.0 /23
fffffc00 255.255.252.0 /22
fffff800 255.255.248.0 /21
fffff000 255.255.240.0 /20
ffffe000 255.255.224.0 /19
ffffc000 255.255.192.0 /18
ffff8000 255.255.128.0 /17

Display X app on another Linux computer with su or sudo

Imagine you have a Linux server (server) without X server installed (or running) and you need to execute some application in graphical environment. If you also have another Linux computer with X server running (laptop), then here are the steps how to do it:

Note: On server you will need this package for X authentication: xorg-x11-xauth

1) connect from laptop with GUI to the server with enabled X11 forwarding:

laptop$ ssh -X user@server_IP

2) when connecting for a firs time, notice:
/usr/bin/xauth: creating new authority file /home/user/.Xauthority

3) you can run any X application on server and you will see X output on your laptop
server$ echo $DISPLAY
localhost:10.0
server$ xclock

4) if you su or sudo to different user, you can't run X application, because you don't have /home/user/.Xauthority file with correct session details

server$ xclock

...
debug2: X11 connection uses different authentication protocol.
X11 connection rejected because of wrong authentication.
debug2: X11 rejected 1 i0/o0
debug2: channel 1: read failed
...

5) connect as normal user again and export your X session details:
laptop$ ssh -X user@server_IP
server$ xauth list
server/unix:11 MIT-MAGIC-COOKIE-1 6ead87db0aa40e02d948eb1634855706

6) now su or sudo to different user and import your session settings:
server$ xauth add <paste the list line here>


7) notice the message:
xauth: creating new authority file /root/.Xauthority

8) now you can run X application again:
server$ xclock

Reset Snare password

Based on my investigation and Snare knowledge level - the Snare Webpage password is located in registry:

You can use this script to change Snare password into: Snr12pas

@echo off
echo
echo changing snare password to Snr12pas
echo ****************
echo Please exit (ctrl+c) now if you do NOT want to go ahead!
echo ****************
pause
echo
echo making backup of existing password in registry into c:\Program Files\Snare\pass_backup.reg
echo
Reg export "HKLM\Software\InterSect Alliance\AuditService\Remote" "c:\Program Files\Snare\pass_backup.reg"
echo
echo backup done, pres enter for the password reset
pause
echo
echo resetting password
echo
reg add "HKLM\Software\InterSect Alliance\AuditService\Remote" /v AccessKeySet /t REG_SZ /d 42f0134b89d7c6f32155ac6eab2125ee /f
reg add "HKLM\Software\InterSect Alliance\AuditService\Remote" /v AccessKeySetSnare1 /t REG_SZ /d 142fd8d4998c9e9fe70e371e4aa658f8 /f
reg add "HKLM\Software\InterSect Alliance\AuditService\Remote" /v AccessKeySetSnare2 /t REG_SZ /d f6987883c4f54c235082142168b0a3db /f
reg add "HKLM\Software\InterSect Alliance\AuditService\Remote" /v AccessKeySetSnare3 /t REG_SZ /d f99d180b53b5eacd1e32ca929876417d /f
net stop snare
net start snare
echo
echo done!

grep regular expressions -OR-

To match word1 or word2 use this regexp:


word1|word2

for characters you have 2 options:
a|b
[ab]


In grep you either use:
grep "word1\|word2"
or
grep -E "word1|word2"


If you want to match 2 different word in grep:
grep -e "word1" -e "word2"


To match either word1 or word2 at the beginning of line and exclude word3 use this:
grep "\(^word1\)\|\(^word2\).*[^word3].*$"

which is (almost) the same as:
grep -e "^word1" -e "^word2" -v word3

Special characters in Vi editor

# to display special characters in Vi:
:set list

# to insert special ^C character type:
<ctrl>+v and then <ctrl>+c

#to hide special characters:
:set nolist

Microsoft SQL Report Builder - Hyperlink in textbox

This will create a hyperlink in table's cell or in any text box:

:

sudo basics

1) config is in /etc/sudoers

2) edit it with visudo command, which can check syntax

3) basic configuration line:

user ALL=(ALL) ALL

1st ALL means on any computer - hostname
2nd =(ALL) means as any user - sudo -u user
3rd ALL means any command

This should always be there, to allow root run everything:
root ALL=(ALL) ALL

Example:

adam earth=(xena) /bin/kill

adam can run /bin/kill command only on computer hostname "earth" and only if logged as xena:
adam runs: sudo -u xena /bin/kill


4) user groups
till now we had users
groups are:
%group_name ALL=(ALL) ALL


5) Aliases:
User_Alias ADMINS=adam, xena
Cmnd_Alias COMMAND1=/bin/kill

now let's use it

ADMINS ALL=(ALL) COMMAND1


6) no password:
%admins_group ALL=(ALL) NOPASSWD: ALL


7) negation - allow all commands apart some:

Cmnd_Alias PASSWD_ROOT=/sbin/passwd root

user1 ALL=(ALL) !PASSWD_ROOT


8) (default) logfile:
/var/log/sudo.log

Linux iptables - open some ports to allow some traffic

1) in RH/CentOS is good to run this command :
$  system-config-securitylevel

2) it creates  basic iptables structure in /etc/sysconfig/iptables:
[root@CentOS log]# cat /etc/sysconfig/iptables
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
[root@CentOS log]#

3)  and also creates new chain called  RH-Firewall-1-INPUT which is inserted in INPUT and FORWARD existing chains:

[root@CentOS log]# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
RH-Firewall-1-INPUT all -- anywhere anywhere

Chain FORWARD (policy ACCEPT)
target prot opt source destination
RH-Firewall-1-INPUT all -- anywhere anywhere

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain RH-Firewall-1-INPUT (2 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT icmp -- anywhere anywhere icmp any
ACCEPT esp -- anywhere anywhere
ACCEPT ah -- anywhere anywhere
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns
ACCEPT udp -- anywhere anywhere udp dpt:ipp
ACCEPT tcp -- anywhere anywhere tcp dpt:ipp
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh
REJECT all -- anywhere anywhere reject-with icmp-host-prohibited
[root@CentOS log]#



4) Imagine that some connection is blocked by FW, for example remote syslog messages (=syslog events sent from other host (/etc/syslog.cong: user.* @IP) to this host which acts as syslog server (/etc/sysconfig/syslog.conf: -r))
To catch this traffic into log for analysis is good to insert following rule
after all ACCEPT rules
and
in front of first REJECT or DROP rule, so it will print all not ACCEPTED and not DROPPED or REJECTED packets into /var/log/messages from where we can easily setup new rule to allow this traffic:

[root@CentOS log]# cat /etc/sysconfig/iptables
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -i eth0 --sport 67:68 --dport 67:68 -j DROP
-A RH-Firewall-1-INPUT -p udp -i eth0 --sport 67:68 --dport 67:68 -j DROP
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -j LOG
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
[root@CentOS log]#
(of course "service iptables restart" after each edit of config file)

5)lets send test syslog message from remote host:
[root@XENtest2 ~]# logger -i -t user "test" 

6) And here is the taken traffic:
[root@CentOS log]# tail -f /var/log/messages
Jul 4 15:54:39 CentOS kernel: IN=eth0 OUT= MAC=00:0c:29:52:d2:58:00:16:3e:6f:99:86:08:00 SRC=192.168.0.128 DST=192.168.0.1 LEN=50 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=514 DPT=514 LEN=30

7) Lets setup iptable rule (more general - just based on protocol UDP and source and destination port 514)

[root@CentOS log]# cat /etc/sysconfig/iptables
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -i eth0 --sport 67:68 --dport 67:68 -j DROP
-A RH-Firewall-1-INPUT -p udp -i eth0 --sport 67:68 --dport 67:68 -j DROP
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --sport 514 --dport 514 -j ACCEPT
-A RH-Firewall-1-INPUT -j LOG
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
[root@CentOS log]#


8) and here it is, syslog message appears on syslog server:
[root@CentOS ~]# tail -f /var/log/messages
Jul 4 16:02:07 192.168.0.128 user[5369]: test

DHCP packets in Wireshark

Capture filter in Wireshark to grab DHCP packet:



and the result:

For tcpdump:
$ tcpdump -vv -s 0 -i eth0 udp port 67 || udp port 68

IPtables filter:
vi /etc/sysconfig/iptables

# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -i eth0 --sport 67:68 --dport 67:68 -j DROP
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT

Bash "while" loop

1) Either:

while read line
do
...
done < my_file.txt

2) Or:

cat my_file.txt | while read LINE
do
...
done


http://www.tldp.org/LDP/abs/html/internal.html#READPIPEREF

Find domain controlers for domain

1) For DNS based on MSWin:

$ nslookup -type=srv _ldap._tcp.dc._msdcs.your_domain
#this should work in Win and Lin

#the same with dig:
$ dig -t any _ldap._tcp.dc._msdcs.your_domain
#doesn't work in all cases ;-(

2) For general DNS:

$ dig -t any domain
#or:
$ dig ALL domain
#or:
$ dig +short ALL domain
#these gives IP's of all domain controllers in domain, now get hostnames from IP:
$ dig -x IP | awk ' /PTR/ {print $NF}'
# -x is reverse nslookup, then grep for PTR regexp and then print last filed, which is hostname
#since not all PTR have hostname, grep -v them with awk \!/PTR/:
for NS in `dig +short ALL your_domain`
do
dig -x $NS | awk ' /PTR/ { print $NF } ' | awk \!/PTR/
done
#or:
$ nslookup IP

3) list of DNS record types:
http://en.wikipedia.org/wiki/List_of_DNS_record_types

awk tips

1) Search for regular expression "test" in file "my_file" and print first and last field of matched line:
$ awk '/test/ { print $1, $NF }' my_file

2) Regular expression comparison is made by ~ or !~ which result is true or false:

3) Search for lines where first field contains "A" and print that line:
$ awk '$1 ~ /A/' my_file
#or 
awk '{ if ($1 ~ /A/) print }' my_file
#where $1 ~ /A/ means "does first field contains A?"
#print is the same as print $0, thus print whole line = all fields

4) grep -v with awk:
awk \!/text/ my_file
5) filed delimiter different than default space:
gawk -F: '{ print $1 }' /etc/passwd



GNU AWK manual:
http://www.gnu.org/software/gawk/manual/gawk.html

Don't redirect Picasa to Google +

No redirect link which also adds cookie for future attempts:

https://picasaweb.google.com/lh/myphotos?noredirect=1

Destroy Xen Domain (virtual host)

#list active domains:
xm list

#some domain can be in bad state - unable to start and unable to create another one with the same name, because configuration file with this name already exists
#to remove domain do these steps:

#terminate domain (remove it from xm list):
xm destroy domainID

#remove autostart link:
rm /etc/xen/auto/domainID*

#remove configuration file
rm /path/to/disk/file
#or remove physical disk or LogicalVolume


#list of all "xm" commands:
console Attach to <Domain>'s console.
create Create a domain based on <ConfigFile>.
destroy Terminate a domain immediately.
dump-core Dump core for a specific domain.
help Display this message.
list List information about all/some domains.
mem-set Set the current memory usage for a domain.
migrate Migrate a domain to another machine.
pause Pause execution of a domain.
reboot Reboot a domain.
restore Restore a domain from a saved state.
save Save a domain state to restore later.
shutdown Shutdown a domain.
trigger Send a trigger to a domain.
top Monitor a host and the domains in real time.
unpause Unpause a paused domain.
uptime Print uptime for a domain.
vcpu-set Set the number of active VCPUs for allowed forthe domain.

Add watermark in batch with ImageMagic

This adds 2 colored text slightly moved side by side. Size 70 is appropriate for resolution ~2000pixels:


for i in `ls -1 IMG*.jpg`; do echo $i; convert $i -pointsize 70 -draw "gravity southeast fill black text 0,12 'Copyright' fill white text 1,11 'Copyright' " ../new/edit-$i; done


Thanks to:
http://www.imagemagick.org/Usage/annotating/#wmark_image

Change hostname to permanent on RedHat like Linux server

edit
[root@localhost ~]# grep HOSTNAME /etc/sysconfig/network
HOSTNAME=localhost.localdomain
[root@localhost ~]#
and then run:
[root@localhost ~]# hostname your_hostname

Create (install) new Xen Virtual Machine in text mode

Either you can use graphical tool virt-manger
or this text tool:

[root@localhost ~]# virt-install --prompt
What is the name of your virtual machine? test2
How much RAM should be allocated (in megabytes)? 500
What would you like to use as the disk (file path)? /home/tomas/test2
How large would you like the disk (/home/tomas/test2) to be (in gigabytes)? 4
What is the install URL? http://merlin.fit.vutbr.cz/mirrors/centos/5.9/os/i386


Starting install...
Retrieving file .treeinfo... | 413 B 00:00
Retrieving file vmlinuz... | 2.2 MB 00:01
Retrieving file initrd.img... | 11 MB 00:08
Creating storage file... | 4.0 GB 00:00
Creating domain... | 0 B 00:02
Connected to domain test2
...



also you can continue in text installation or you can start VNC server:

Welcome to CentOS

+-----------+ VNC Configuration +------------+
| |
| A password will prevent unauthorized |
| listeners connecting and monitoring your |
| installation progress. Please enter a |
| password to be used for the installation |
| |
| Password: ********________ |
| Password (confirm): ********________ |
| |
| |
| +----+ +-------------+ +------+ |
| | OK | | No password | | Back | |
| +----+ +-------------+ +------+ |
| |
| |
+--------------------------------------------+



Probing for video card: Unable to probe
No video hardware found, assuming headless
Starting VNC...
The VNC server is now running.
Please connect to 172.16.79.130:1 to begin the install...
Press <enter> for a shell
Starting graphical installation...
XKB extension not present on :1



and continue in graphical mode with "vncviewer" command.

Xen server inside VMWare host and problem with promisc mode of network card

Running Xen server inside VMWare host (with xen kernel) can cause problem with switching network card into Promiscuous Mode and thus can lead into network card not operational state.
Here is a simple solution of this security problem:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=287