02-08-2010
Configuring Linux as a firewall
i have a linux server runnig oracle applications.
i need to access this server from putty using ssh through internet.
i did by registering my static ip with the dnydns.org and i am able to connect to the server.
but now there is no security to authenticate any user as any one knowing the password can login to it.
i thought of configuring the firewall of linux server but the client ip`s are not static and they change continiously.
so thought of keeping one more pc between the server and the router which will do the work of authenticating. but i am confuse as how to configure it to allow the packets coming from the internet after authenticating and to by pass the packets generated from internal LAN?
i have heared abut freeradius package but i am not sure will it work in my case?
thanx in advance
Last edited by u.n.i.x; 02-08-2010 at 06:37 AM..
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LEARN ABOUT DEBIAN
nwbprm
NWBPRM(8) nwbprm NWBPRM(8)
NAME
nwbprm - Remove a NetWare Bindery Propery
SYNOPSIS
nwbprm [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ] [ -o object name ] [ -t type ] [ -p property ]
DESCRIPTION
nwbprm removes the specified NetWare Bindery Propery.
nwbprm looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more information.
Please note that the access permissions of $HOME/.nwclient MUST be 600 for security reasons.
OPTIONS
-h
-h is used to print out a short help text.
-S server
server is the name of the server you want to use.
-U user
user is the user name to use for login.
-P password
password is the password to use for login. If neither -n nor -P are given, and the user has no open connection to the server, nwbprm
prompts for a password.
-n
-n should be given if no password is required for the login.
-C
By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
this conversion by -C.
-o object name
The name of the object to be touched.
-t object type
The type of the object. Object type must be specified as a decimal value. Common values are 1 for user objects, 2 for group objects and
3 for print queues. Other values are allowed, but are usually used for specialized applications.
-p property
The name of the property to be removed.
AUTHORS
nwbprm was written by Volker Lendecke with the corresponding Caldera utility in mind. See the Changes file of ncpfs for other contributors.
nwbprm 7/9/1996 NWBPRM(8)