Showing posts with label Networking. Show all posts
Showing posts with label Networking. Show all posts

How to access another computer using Remote Desktop Connection via LAN or Internet network

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A few minutes ago I was asked to help the reader to make a remote connection to the server that is accessible from the home office via an internet connection. Here we will use the default application from Windows XP.
Remote Desktop is one of the many programs that functioned as a provider of access to a computer over a network. Microsoft provides this program for managing a computer running Microsoft Windows. With this program you can connect with computers in your office from your home. You can access programs, files and resources on the LAN network as if you really are in front of the office computer.
In order for the Remote Desktop can run, you need to prepare three of the following:

1. Computers that you will access remotely must install Windows XP Professional or above. This computer must also be within range of a network that allows access with Remote Desktop connection. This computer is hereinafter referred to as the Host.
2. Computer you will use as a means of remote host computer must be running on Windows 95 and above. This computer also must have the Remote Desktop Connection Client Software. This computer is hereinafter referred to as Client.
3. Both computers must be connected with one of the network: the Internet via a VPN connection or a local LAN network

Note:
- If your second computer is not turned on each other with VPN, you need to know the IP Address Host computer and the Computer Name.
- Remember, the host computer or a remote computer you will have to use Windows XP Professional and above. Windows XP Home Edition does not support Remote Desktop computer as the Host.

To download the Remote Desktop settings, ranging from the Host computer. Here I suppose that with your office computer.

Make sure you are logged in as a user with Administrator access level

Here are the steps you should do :


1. Click Start> Control Panel as shown below. If you are still using the Control Panel Category view View, to more easily follow this review I suggest you to change the view to Classic View by clicking the button "Switch to Classic View" on the left side of the Control Panel.
2. Double-click System


3. Click on the tab "Remote", select the check box "Allow users to the connect remotely to this computer" and click OK

 



Next, make sure you have set Windows Firewall to allow exceptions (Exceptions) with the following steps:

1. In Control Panel> Double-click the Windows Firewall icon


image3
 
2. Make sure the check box "Do not allow exceptions" in the selected condition
image4
3. Click on the Exceptions tab, make sure the check box "Remote Desktop" is selected.
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4. Click OK, then close the Security Center.
Host Computer Now you are ready to accept Remote Access

Next you need to give the name of your host computer with the following steps:

1. In Control Panel, double-click the System icon, enter the Computer Name tab
2. Write the full name for the computer, click OK.
image6
3. Close the Control Panel
4. Let the computer is still alive, and be sure to stay connected to corporate networks with internet access.


Now we how do we access the server from the client computer?
Furthermore, the order for you to connect to a computer in your office can make a connection through any computer that has Internet connection with the following steps:

1. From the client computer click Start> All Programs> Accessories.
2. In the menu Accessories> Communications> click Remote Desktop Connection.
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3. In the Computer box that appears, type the name of the host computer that we have set previously. For those of you who have a computer with internet connection in addition to LAN or VPN without the support you need to enter the IP Address that will be your remote computer.
4. Click Connect.
5. Once the dialog box Log On to Windows appears, type the username, password and domain (if necessary), end with the click OK.
image8

If your connection is successful, Windows will display a window exactly like a desktop computer that your Remote. You can see the desktop, programs, access files, and all the Host computer resources as if you were in front of the computer. At this time the remote computer you will be locked and do not have any access rights without knowing the administrator password. Oh yes, in addition, no one will ever be able to see that you are on your office computer from remote access.

To end a Remote Desktop session, you just do:

1. Click Start> Log Off (at the bottom of the Start menu)
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2. Click Log Off on the confirmation window.

Good luck...


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A collection of Linux commands list

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It seems that free things are more enjoyable, it can be seen from several open source software.
This also happens on Linux-based operating system, considering that this operating system for free so many people who like the existence of Linux, in addition to the security level of Linux is more secure / safe for use in an Internet network, the linux port is always closed and will open if the user / admin accidentally opened it, it will be difficult for hackers to penetrate the virtual world based linux port.
But the difficulty now experienced by the novice users will penggguna troubled by various kinds of commands in linux are a bit strange compared to the command prompt, but I'll give a little information about a variety of basic commands in linux, which will be describe below :

Collection & List Commands Linux + From the brief description A - Y:

a
adduser = Add users to the system
addgroup = Add group to the system
Create an alias = alias
apropos = Search Help manual pages (man-k)
apt-get = Find and install software packages (Debian)
aspell = Spellchecker
awk = Find and Replace text, database sort / validate / index
b
basename = Strip directory and suffix from filenames
= bash GNU Bourne-Again Shell
bc = Arbitrary precision calculator language
bg = Send to a background
break = Exit from a loop
= builtin Run a shell builtin
bzip2 Compress or decompress a file = name (s)
c
cal = Display calendar
case = conditionally perform a command
cat = Displays the contents of the file
cd = Change Directory
cfdisk = partition table manipulator for Linux
= chgrp Change group ownership
chmod = Change access permission
= chown Change file owner and group
chroot = Run command with a different root directory
chkconfig = System services (runlevel)
= cksum Print CRC checksum and byte count
clear = Clear terminal screen
cmp = Compare two files
comm = Compare two sorted files line by line
command = Run command - ignoring shell functions
continue = Resume the next iteration of a loop
cp = Copy one or more files to another location
= cron Daemon to execute commands that are scheduled
= crontab Schedule a command to run at another time
csplit = Split files into context - piece set
cut = split files into several parts
d
date = Display or change the date & time
dc = Desk Calculator
dd = Convert and copy files, write disk headers, boot records
ddrescue = Tools to improve data
DECLARE = Declare variables and give them attributes
df = Display disk space
diff = Show the difference between two files
= diff3 Show differences among three files
dig = DNS lookup
dir = Short List directory contents
dircolors = Color setup for `ls'
dirname = Convert all pathname to multiple paths
dirs = Display list of remembered directories
dmesg = Prints the messages the kernel & drivers
du = Estimate file space usage
e
echo = Display message on screen
egrep = Search files for lines that match an extended expression
= eject Eject removable media
enable = Enable and disable builtin shell commands
env = Environment variables
= ethtool Ethernet card settings
eval = Evaluate several commands / arguments
exec = Run command
exit = Exit from shell
Expect = automate applications that are accessible through the terminal free
expand = Convert tabs to spaces
export = Set environment variables
Evaluate the expression expr =


f
false = not doing anything, do not succeed
fdformat = low level format a floppy disk
= fdisk partition table manipulator for Linux
fg = Send job to foreground
fgrep = Search files for lines that match a fixed string
file = Determine the type of file
find = Find files that meet the desired criteria
fmt = Reformat text type
fold = Wrap text to fit a certain width.
for = Expanding the words, and run the command
format = Format disks or tapes
free = Display memory usage
fsck = Checking and repairing file system consistency
ftp = File Transfer Protocol
function = Define a macro function
fuser = Identification / decision process that is accessing files
g
gawk = Find and Replace text in files
getopts = Describe the parameters according to position
grep = Search files for lines that match a certain pattern
group = Print the name of the user group
Compress or decompress gzip = file name
h
hash = Given the pathname of a name argument
head = Output the first part of the file
help = Display help for built-in command
history = Command history
hostname = Print or set system name

i
id = id Print user and group
if = perform commands conditionally
ifconfig = Configuring network interfaces
ifdown = Stop the network interface
ifup = Starting or more network interfaces
import = Capture an X server screen and save an image to a file

install = Copy files and set attributes
j
join = join line in common field
k
kill = Terminate running processes
killall = Terminate process by name
l
less = Display output one screen at a time
let = Perform arithmetic on shell variables
ln = Creating links between files
= Creating local variables
locate = Find file
LOGNAME The bare = Print login name
logout = Exit a login shell
look = Display lines beginning with a certain string
LPC = line printer control program
= lpr Off line print
lprint = Print File / Print files
lprintd = Abort a print job
lprintq = List the print queue
= lprm Remove jobs from the print queue
ls = List information about file
= lsof List open files
m
Rebuilding the make = A group of programs
man = Help Manual
mkdir = Make a new folder
= mkfifo Make FIFOs (named pipes)
mkisofs = Create ISO9660/JOLIET/HFS hybrid filesystem
mknod = Make block or character special file
more = Display output one screen at a time
mount = Mount file system
= mtools Manipulate MS-DOS file
mv = Move or rename a file or directory
MMV = Move the masses and changed the name (file)
n
netstat = Information Network
nice = Set priority command or job
nl = number lines and write files
nohup = Run command immune to hangups
= nslookup Query Internet calls are interactive server
o
open = open file in default application
op = Operator Access
p
passwd Modify a user password
Combining rows = paste files
pathchk = Check file name portability
ping = Test network connection
pkill = terminate running processes
= popd Restore the previous value of the current directory
pr = Prepare files for printing / print
= printcap printer capability database
= printenv Print environment variables
printf = Format and print data
ps = Status Process
= pushd Save and then change the current directory
pwd = print working directory
q
= repulse the use of disk quotas and limit
quotacheck = Examine file system for disk usage
quotactl = Set disk quotas
r
= ram ram disk device
rcp = Copy files between two machines
read = Read a line from standard input
readarray = Read from stdin into an array variable
readonly = Mark variables / functions as readonly
Reboot the system reboot =
rename = Rename files
renice = Change priority of running processes
remsync = Synchronize remote files via email
return = Exit a shell function
rev = Reversing the line from a file
rm = Deleting files
rmdir = Remove folder
= rsync Remote file copy (Synchronize file trees)
s
screen = Multiplex terminal, run remote shells via ssh
scp = secure copy (remote file copy)
sdiff = Merge two files interactively
sed = Stream Editor
select = Accept keyboard input
= seq Print numeric sequences
set = Manipulate shell variables and functions
sftp = Secure File Transfer Program
shift = shift positional parameters
shopt = shell options
shutdown = Shutdown or restart linux
sleep = delay / delay for a certain period
slocate = Find file
sort = Sort text files
source = Run command from the file `."
Split = Split files into fixed-cut
= ssh Secure Shell client (remote login program)
= strace Trace system calls and signals
su = substitute user identity
sudo = Run command as another user
sum = Print a checksum for a file
symlink = Make a new name for the file
sync = Synchronize data on disk with memory
t
tail = Output the last part of files
tar = Tape Archiver
tee = Redirect output to multiple files
test = Evaluate conditional expression
time = time Measure Program running
Times = User and system time
touch = Change file timestamps
top = List processes running on the system
= traceroute Trace Route to Host
trap = Run command when a signal is set (bourne)
= tr Translate, squeeze, and / or delete characters
true = Do nothing, successfully
tsort = Topology sort
= tty Print filename of terminal on stdin
type = explain command
u
ulimit Limit user resources = (resources)
umask = The user creates a hidden file
umount = Unmount (not mounted) devices
unalias = Remove alias
uname = print system information
unexpand = Convert spaces to tabs
Uniq = Uniquify file
unit = Convert units from one scale to another
unset = Remove variable or function names
unshar = Unpack shell archive records
Until = Execute commands (until error)
useradd = Create a new user account
= usermod Modify user account
users = list of users currently logged in
= uuencode Encode a binary file
= uudecode Decode a file created by uuencode
v
v = Verbosely directory contents (`ls-l-b ')
vdir Verbosely = List directory contents (`ls-lb ')
vi = Text Editor
= vmstat virtual memory statistics report
w
watch = Execute / display a program periodically
= wc Print byte, word, and line count
whereis = Search user $ path, man pages and source files for the program
the which = Search user $ path for program files
while = Run
WHO = Print all usernames currently logged in
whoami = Print the current user id and name (`id-un ')
wget = Retrieve web pages or files via HTTP, HTTPS or FTP
write = Send a message to other users
x
xargs = Execute utility, passing constructed argument list

y
= yes Print a string until the interrupt

. = Script to run a command shell that is now
Good try new things from Linux
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How to build a network on a Linux operating system?

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The reader may already be accustomed to make a network on the Windows operating system, yet another case padaLinux, still many people who feel Linux is something that is hard, including me, but all that is just a mere suggestion and because we are afraid or unwilling to try, the following I will explain about how to build a network on a Linux operating system. There are several things that must be done before building such a network include:

1.
1. note card series from the vendor and the network card (NIC) that we have, the type and brand, its bus type (ISA or PCI), if the ISA also noted IRQ and I / O addresses.
2. check whether the kernel during the boot process is to recognize the network card or by using the command dmesg.

The reader may already be accustomed to make a network on the Windows operating system, yet another case padaLinux, still many people who feel Linux is something that is hard, including me, but all that is just a mere suggestion and because we are afraid or unwilling to try, the following I will explain about how to build a network on a Linux operating system. There are several things that must be done before building such a network include:


1. note card series from the vendor and the network card (NIC) that we have, the type and brand, its bus type (ISA or PCI), if the ISA also noted IRQ and I / O addresses.
2. check whether the kernel during the boot process is to recognize the network card or by using the command dmesg.

Every Linux distro has a program in their respective utilities, including utilities for configuring Linux into a network. On RedHat distribution we can we can do pensettingan network card through linuxconf.

Ip setting aims to demonstrate or provide id on our computers will be connected to the network. So good that our computer or other computers can communicate with each other. Must be remembered that in doing pensettingan we must enter as a user with high priority or administrator is often referred to as root "#". Sharing files on linux is aimed so that we can share files with other computers.

For our file sharing using samba. Samba is an

prangkat UNIX application that uses the SMB protocol (server message block). On linux with the latest version of samba is already available devices. But if no sorce we can download.Download samba [root @ proxy / home / install] $ wget. http://us3.samba.org/samba/ftp/samba-latest.tar.gz or search for it on samba.org mirrors.

Common commands used in Linux or UNIX, using ifconfig command. Ifconfig command is very commonly found in all Linux distributions and UNIX and is used to configure or check the configuration of network devices. Ifconfig can be used to determine the IP address (IP address) of a network card, netmask, and his broadcast address. Or replace some parameters TSB. ifconfig will be always be used as a command from the script file / etc / rc.d / rc.local on each interface that has been supported by the system.

1. Setting the IP Address, Netmask, and Broadcast

Syntax for setting these opinions are: ifconfig interface IP_Address netmask mask broadcast address. The command is used to determine the basic parameters on the network card, wherein:

a. interface - is a label identifying the network card is used. For example, etherner1 known as etho.

b. IPaddress - is the value to assign the IP address of network card

c. Netmask mask - used to determine subnetmask. This parameter can be omitted if the mask is passed will be set by default (meaning the network is not included in this subnet)

d. Broadcast address-an address from the broadcast on the network. The default host ID on all bits set to one. All the hosts in the same network must have the same broadcast address.

In the following example, use ifconfig to set IP address and netmask of an NE2000 Ethernet network card.

# Ifconfig eth0 192.168.0.12 netmask 255.255.255.0

Can also use the hostname of an IP address,

# Ifconfig eth0 netmask 255.255.255.0 broadcast 11c 192 168 255 255

2. Checking the configuration with ifconfig

To verify whether the configuration was embedded, use the command

# Ifconfig eth0.

In the ifconfig command, there are several optional parameters such as up and down where the parameters are used to activate (enable) or deactivate (disable) a network card. The parameters are used: # ifconfig eth0 down (to disable the network card). # Ifconfig eth0 up (to re-activate the network card). If we intend to change the identity of a network card (an IP address, netmask, and broadcast address), then we must disable the network card, then configure it again with a new identity and then we'll switch back and do not forget to check the configuration again, then use ping command.

Use the command ifconfig is only temporary, because if the computer rebooted, the configuration we have made previously inactive again. This is because the files TCP / IP startup tidakdiperintahkan to activate these configurations.

Working steps

IP settings on linux (ubuntu)

A. Changing the configuration script memekai

1. jarkom login: jarkom

2. password: jarkom

3. jarkom @ labjar $ su (root)

4. root @ labjar #

5. # ifconfig root @ labjar

6. root @ labjar # pico / etc/rc.d/rc.inet1.conf

# Information for eth0

7. # Config information for eth0:

IPADDR [1] = "192 168 100 104"

8. netmask = "255.255.255.0"

9 The gateway = "192.168.100.1"

10 ifconfig eth0 root @ labjar

11 root @ labjr # / etc/rd/rc.inet1 restart apply konf.

Root @ 12 # ping ip own labjar

root @ labjar # ping 19,168,100,104 repply

Root @ 13 # ping ip next labjar

root @ labjar # ping repply 192 168 100 103

B. wear display

1. root @ labjar netconfig # check config

2. hostname: optional computer name

3. domain: root

Select a static ip

4. Ip address: "192.168.100.14"

5. Netmask: 255.255.255.0

6. Gate Way: 192.168.100.1

7. Mipa.uns.ac.id: 222 124 162 145

Man net config

Man if config

Analysis

1. While filling the login, maybe there are some PCs that do not successfully login if filled with a login that has been determined. For that filled the root login.

2. # Pico / etc/rc.d/rc.inet1.conf used to manually edit the IP

3. Ifconfig if the windows is the ipconfig. Useful to check the ethernet already installed or not. Also ifconfig also to see the IP address.

4. / Etc/rc.d/rc.inet1.restart used to restart. This command is used when we change the IP. After the IP we save and we check, it turns out the IP still has not changed, then we use this command to restart the IP which we have previously saved.

Conclusion

1.
1. To find the IP configuration has been replaced in Linux, use the command: cd/etc/rc/d-inet1.restart.
2. On Linux to do the setup of TCP / IP using a script (.... / Etc / ....)
3. On Linux IP configuration update / disave first and can be run.
4. To check whether the computer network we are able to function properly, use the command "ping [computer's IP configuration]" for example: ping 192 168 100 104
5. To mengetahiu indication / IP configuration details on our computer, use the command: "ifconfig".


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