Remove My Documents from the Desktop

Windows 95, 98 and Me
[HKEY_CURRENT_USER\Software\Classes\CLSID\{450D8FBA-AD25-11D0-98A8-0800361B1103}\ShellFolder]
Windows NT, 2000 and XP
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID\{450D8FBA-AD25-11D0-98A8-0800361B1103}\ShellFolder]
Modify the value called "Attributes" and set it to either "0xf0500174" to hide or "0xf0400174" to display My Documents.
Click on a blank area of desktop and press F5 to refresh for the change to take effect.
Note: This tweak can also by used on a system wide basis by entering the same values under the [HKEY_LOCAL_MACHINE] hive.

		(Default)	REG_SZ	(value not set)
		Attributes	REG_DWORD	0xf0500174 (4031775092)

	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\...

subneeting made simple

EIGRP configuration example for CCNA

eigrp configuration

R1
 

R1(config)#router eigrp ?
<1-65535> Autonomous system number
R1(config)#router eigrp 1
R1(config-router)#network 172.16.0.0
R1(config-router)#network 192.168.10.0
R1(config-router)#
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 172.16.3.2 (Serial0/0/0) is up: new adjacency
R2
R2(config-router)#ne
R2(config-router)#network 172.16.0.0
R2(config-router)#
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 172.16.3.1 (Serial0/0/0) is up: new adjacency
network 192.168.10.0
R2(config-router)#
R3
R3(config)#router eigrp 1
R3(config-router)#network 192.168.0.0 < not worked : enter classfull n/w
R3(config-router)#network 192.168.10.0
R3(config-router)#
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.9 (Serial0/0/0) is up: new adjacency
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.5 (Serial0/0/1) is up: new adjacency
R3(config-router)#network 192.168.1.0

R3#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D 172.16.0.0/16 [90/540160] via 192.168.10.9, 00:01:11, Serial0/0/0
[90/540160] via 192.168.10.5, 00:01:11, Serial0/0/1
D 172.16.1.0/24 [90/2684416] via 192.168.10.9, 00:01:11, Serial0/0/0
D 172.16.2.0/24 [90/2684416] via 192.168.10.5, 00:01:11, Serial0/0/1
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
D 192.168.1.0/24 is a summary, 00:01:08, Null0
C 192.168.1.0/29 is directly connected, FastEthernet0/0
192.168.10.0/24 is variably subnetted, 3 subnets, 2 masks
D 192.168.10.0/24 is a summary, 00:01:08, Null0
C 192.168.10.4/30 is directly connected, Serial0/0/1
C 192.168.10.8/30 is directly connected, Serial0/0/0
R3#
------------------------------------------------------------------------------------------------------

DISABLING AUTOSUMMARIZATION
R3(config-router)#no auto-summary
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.5 (Serial0/0/1) is up: new adjacency
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.9 (Serial0/0/0) is up: new adjacency
R3(config-router)#
R3(config-router)#^Z
R3#
%SYS-5-CONFIG_I: Configured from console by console
R3#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D 172.16.1.0/24 [90/540160] via 192.168.10.5, 00:00:25, Serial0/0/1
D 172.16.2.0/24 [90/540160] via 192.168.10.9, 00:00:25, Serial0/0/0
D 172.16.3.0/30 [90/2681856] via 192.168.10.5, 00:00:25, Serial0/0/1
[90/2681856] via 192.168.10.9, 00:00:25, Serial0/0/0
192.168.1.0/29 is subnetted, 1 subnets
C 192.168.1.0 is directly connected, FastEthernet0/0
192.168.10.0/30 is subnetted, 2 subnets
C 192.168.10.4 is directly connected, Serial0/0/1
C 192.168.10.8 is directly connected, Serial0/0/0
R3#
------------------------------------------------------------------------------------------------------
MANUAL SUMMARIZATION
simulate lAN on R3
R3(config)#interface loopback 0
R3(config-if)#ip address 192.168.0.1 255.255.255.0
R3(config)#interface loopback 2
R3(config-if)#ip address 192.168.2.1 255.255.255.0
R3(config)#interface loopback 3
R3(config-if)#ip address 192.168.3.1 255.255.255.0

R3#
R3#sh ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.1.1 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 192.168.10.10 YES manual up up
Serial0/0/1 192.168.10.6 YES manual up up
Loopback0 192.168.0.1 YES manual up up
Loopback2 192.168.2.1 YES manual up up
Loopback3 192.168.3.1 YES manual up up
Vlan1 unassigned YES unset administratively down down
R3#
R3(config)#router eigrp 1
R3(config-router)#network 192.168.0.0
R3(config-router)#network 192.168.2.0
R3(config-router)#network 192.168.3.0
R3(config-router)
now see routing table on R2

R2#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/30 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D 172.16.1.0/24 [90/1052160] via 192.168.10.10, 00:05:43, Serial0/0/1
C 172.16.2.0/24 is directly connected, FastEthernet0/0
C 172.16.3.0/30 is directly connected, Serial0/0/0
D 192.168.0.0/24 [90/642304] via 192.168.10.10, 00:01:24, Serial0/0/1
192.168.1.0/29 is subnetted, 1 subnets
D 192.168.1.0 [90/540160] via 192.168.10.10, 00:05:43, Serial0/0/1
D 192.168.2.0/24 [90/642304] via 192.168.10.10, 00:00:18, Serial0/0/1
D 192.168.3.0/24 [90/642304] via 192.168.10.10, 00:00:15, Serial0/0/1
192.168.10.0/30 is subnetted, 2 subnets
D 192.168.10.4 [90/1026304] via 192.168.10.10, 00:05:43, Serial0/0/1
C 192.168.10.8 is directly connected, Serial0/0/1
R2#
The routes in Example above can be summarized into one supernet route advertised by R3 to both
R1 and R2. A supernet is a collection of contiguous classful network addresses aggregated into one
route. Instead of sending four /24 routes for the classful networks 192.168.0.0, 192.168.1.0,
192.168.2.0, and 192.168.3.0, we can configure a manual summary route as 192.168.0.0/22.
Manual summary routes must be configured on the interface that you want the summary route to
be sent out of. The syntax for manual summary routes with EIGRP is as follows:
Router(config-if)#ip summary-address eigrp as-number network-address subnet-mask
Because R3 has two EIGRP neighbors, the EIGRP manual summarization in configured on both
Serial 0/0/0 and Serial 0/0/1, as shown in Example 13-
R3(config)#interface serial 0/0/0
R3(config-if)#ip summary-address eigrp 1 192.168.0.0 255.255.252.0
R3(config-if)#
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.5 (Serial0/0/1) is up: new adjacency

%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.9 (Serial0/0/0) is up: new adjacency
R3(config)#interface serial 0/0/1
R3(config-if)#ip summary-address eigrp 1 192.168.0.0 255.255.252.0
R3(config-if)#
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.9 (Serial0/0/0) is up: new adjacency
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.10.5 (Serial0/0/1) is up: new adjacency
^Z
R3#
R2#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/30 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D 172.16.1.0/24 [90/1052160] via 192.168.10.10, 00:00:06, Serial0/0/1
C 172.16.2.0/24 is directly connected, FastEthernet0/0
C 172.16.3.0/30 is directly connected, Serial0/0/0
D 192.168.0.0/22 [90/540160] via 192.168.10.10, 00:00:07, Serial0/0/1
192.168.10.0/30 is subnetted, 2 subnets
D 192.168.10.4 [90/1026304] via 192.168.10.10, 00:00:07, Serial0/0/1
C 192.168.10.8 is directly connected, Serial0/0/1
R2#
-----------------------------------------------------------------------------------------------------
EIGRP Default Route
The quad zero default static route can be used with any currently supported routing “ “ protocols. In
our example, we configure the static default route on R2 because it is simulating a connection to
ISP. Example 13-9 shows the default static route configuration on R2.
Configuring and Redistributing a Default Route in EIGRP
Loopback0 10.1.1.1 YES manual up up
R2(config)#ip route 0.0.0.0 0.0.0.0 loopback 0
R2(config)#router eigrp 1
R2(config-router)#redistribute static
R2(config-router)#^Z
R2#
The redistribute static command tells EIGRP to include this static route in its EIGRP updates to
other routers. Example 13-10 shows the routing table for R1 with the default route highlighted.
R3#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is 192.168.10.9 to network 0.0.0.0
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D 172.16.1.0/24 [90/540160] via 192.168.10.5, 00:14:46, Serial0/0/1
D 172.16.2.0/24 [90/540160] via 192.168.10.9, 00:14:47, Serial0/0/0
D 172.16.3.0/30 [90/2681856] via 192.168.10.9, 00:14:47, Serial0/0/0
[90/2681856] via 192.168.10.5, 00:14:46, Serial0/0/1
192.168.0.0/24 is variably subnetted, 2 subnets, 2 masks
D 192.168.0.0/22 is a summary, 00:15:27, Null0
C 192.168.0.0/24 is directly connected, Loopback0
192.168.1.0/29 is subnetted, 1 subnets
C 192.168.1.0 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Loopback2
C 192.168.3.0/24 is directly connected, Loopback3
192.168.10.0/30 is subnetted, 2 subnets
C 192.168.10.4

is directly connected, Serial0/0/1
C 192.168.10.8 is directly connected, Serial0/0/0
D*EX 0.0.0.0/0 [170/1794304] via 192.168.10.9, 00:00:50, Serial0/0/0
R3#
Modifying the Bandwidth
R1(config)#interface serial 0/0/0
R1(config-if)#bandwidth 64
R2(config)#interface serial 0/0/0
R2(config-if)#bandwidth 64
R2(config-if)#interface serial 0/0/1
R2(config-if)#bandwidth 1024
R3(config)#interface serial 0/0/1
R3(config-if)#bandwidth 1024
Modifying the Hello Intervals and Hold Times
R1(config)#interface s0/0/0
R1(config-if)#ip hello-interval eigrp 1 60
R1(config-if)#ip hold-time eigrp 1 180
R2(config)#interface s0/0/0
R2(config-if)#ip hello-interval eigrp 1 60
R2(config-if)#ip hold-time eigrp 1 180
------------------------------------------------------

Verify EIGRP Configuration
R1#sh ip protocols
Routing Protocol is "eigrp 1 "
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Default networks flagged in outgoing updates
Default networks accepted from incoming updates
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP maximum hopcount 100
EIGRP maximum metric variance 1
Redistributing: eigrp 1
Automatic network summarization is not in effect
Maximum path: 4
Routing for Networks:
172.16.0.0
192.168.10.0
Routing Information Sources:
Gateway Distance Last Update
172.16.3.2 90 3925491
192.168.10.6 90 4485881
Distance: internal 90 external 170
R1#
R1#sh ip eigrp topology
IP-EIGRP Topology Table for AS 1
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 172.16.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 172.16.3.0/30, 1 successors, FD is 2169856
via Connected, Serial0/0/0
P 192.168.10.4/30, 1 successors, FD is 513536
via Connected, Serial0/0/1
P 172.16.2.0/24, 1 successors, FD is 1052160
via 192.168.10.6 (1052160/540160), Serial0/0/1
via 172.16.3.2 (2172416/28160), Serial0/0/0
P 192.168.10.8/30, 1 successors, FD is 1026304
via 192.168.10.6 (1026304/514304), Serial0/0/1
via 172.16.3.2 (2681856/514304), Serial0/0/0
P 192.168.0.0/22, 1 successors, FD is 540160
via 192.168.10.6 (540160/28160), Serial0/0/1
P 0.0.0.0/0, 1 successors, FD is 2306304
via 192.168.10.6 (2306304/1794304), Serial0/0/1
via 172.16.3.2 (3449856/1280256), Serial0/0/0
R1#
R1#sh ip eigrp topology all-links
IP-EIGRP Topology Table for AS 1
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 172.16.1.0/24, 1 successors, FD is 28160
via Connected, FastEthernet0/0
P 172.16.3.0/30, 1 successors, FD is 2169856
via Connected, Serial0/0/0
P 192.168.10.4/30, 1 successors, FD is 513536
via Connected, Serial0/0/1
P 172.16.2.0/24, 1 successors, FD is 1052160
via 192.168.10.6 (1052160/540160), Serial0/0/1
via 172.16.3.2 (2172416/28160), Serial0/0/0
P 192.168.10.8/30, 1 successors, FD is 1026304
via 192.168.10.6 (1026304/514304), Serial0/0/1
via 172.16.3.2 (2681856/514304), Serial0/0/0
P 192.168.0.0/22, 1 successors, FD is 540160
via 192.168.10.6 (540160/28160), Serial0/0/1
P 0.0.0.0/0, 1 successors, FD is 2306304
via 192.168.10.6 (2306304/1794304), Serial0/0/1
via 172.16.3.2 (3449856/1280256), Serial0/0/0
R1#
By comparing the output from Example 13-14 with the output from Example 13-15, you can see
that EIGRP has more routes in the routing table than shown initially. But these additional routes do
not meet the feasibility condition. Therefore, DUAL must first query neighbors to make sure there
is not a better route out there before installing a route that does not meet the feasibility
condition.
This is the essence of how DUAL avoids loops.
DUAL s finite state machine how the algorithm comes to a final decision is graphically “ “ “ represented
in the flow chart in Figure 13-6.
To monitor DUAL“s FSM in action, use the debug eigrp fsm command. Then shut down an interface
on the router to see how DUAL reacts to the change in the topology.

Windows Terminal users cant set a Default Printer

Working with Microsoft  servers are  a  headache for me

there was  a  problem ,  a Terminal Server logged in  user cant set default  printer

Cause :  Missing  Registry key in  usre's profile

add  the  key

HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows 

save ,  reboot , good  luck

how to change rdp listening port

1. Start Registry Editor.
2. Locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber
3. On the Edit menu, click Modify, and then click Decimal.
4. Type the new port number, and then click OK.
5. Quit Registry Editor.
6. Restart the computer.

Frame Relay

Frame Relay is a standardized wide area networking technology

• Use  physical and logical link layers of digital telecommunications channels
• A packet switching methodology. 
• Network providers commonly implement Frame Relay for voice (VoFR) and data as an encapsulation technique

ssh rsync Linux

SSH Login Without Password 

Using ssh-keygen & ssh-copy-id

first  create public and private key pair  on  localhost 

[root@DC01-Alpha disk2]# ssh-keygen

then the key will be generated

Generating public/private rsa key pair.
Enter file in which to save the key (/home/jsmith/.ssh/id_rsa):[Enter key]
Enter passphrase (empty for no passphrase): [Press enter key]
Enter same passphrase again: [Pess enter key]
Your identification has been saved in /home/jsmith/.ssh/id_rsa.
Your public key has been saved in /home/jsmith/.ssh/id_rsa.pub.
The key fingerprint is:

33:b3:fe:af:95:95:18:11:31:d5:de:96:2f:f2:35:f9 jsmith@local-host

then Copy the public key to remote-host using ssh-copy-id

jsmith@local-host$ ssh-copy-id -i ~/.ssh/id_rsa.pub remote-host
jsmith@remote-host's password:
Now try logging into the machine, with "ssh 'remote-host'", and check in:

.ssh/authorized_keys

Login to remote-host without entering the password

jsmith@local-host$ ssh remote-host
Last login: Sun Nov 16 17:22:33 2008 from 192.168.1.2
[Note: SSH did not ask for password.]

jsmith@remote-host$ [Note: You are on remote-host here]

Now perfrom the  synchronization

 [root@yourcomputer]$rsync -progress -avhe ssh --delete /disk2/myfolder root@ip.add.re.ss:/disk2/ [Note: You are on local] 

This can be set to run automatically using  cron

http://www.thegeekstuff.com/2009/06/15-practical-crontab-examples/

source http://www.thegeekstuff.com/2010/09/rsync-command-examples/