Author Topic: Help  (Read 2141 times)

johnmical

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Re: Help
« Reply #15 on: September 09, 2013, 02:34:36 AM »

Hi,

   How long does it take for security changes to be replicated among the domain controllers??
 :)

Shemeer

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Re: Help
« Reply #16 on: September 09, 2013, 02:35:42 AM »

Hello john,

Security-related modifications are replicated within a site immediately.
These changes include account and individual user lockout policies, changes to password policies, changes to computer account passwords, and modifications to the Local Security Authority (LSA).


Thanks,
Shemeer

johnmical

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Re: Help
« Reply #17 on: September 10, 2013, 01:20:11 AM »

Hi shemeer,

I need urgent help :( :(
I lost my root password and i need to give it, I treid to change it through single usermode even though i am not get a password, then what is the other procedure to give a root password???
Very urgent!!


Shemeer

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Re: Help
« Reply #18 on: September 10, 2013, 01:22:08 AM »

Hello john,

Please follow the given procedure to get new root password:

Login into single user mode and try below things:
1. passswd [ Change Password for root ]
2. rm -rf /etc/nologin
3. remove any "nologin" shell for root user in /etc/passwd file
4. chage -l root then chage -E root
5. passwd -u root
6. chattr -i /etc/passwd /etc/shadow
7. chmod 600 /etc/securetty
8. vim /etc/rc.local --> then remove any line like say "
/etc/nplogin "
9. chsh root [ /bin/bash ]

I hope you will get your root access.
Please check.

Thanks,
Shemeer

johnmical

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Re: Help
« Reply #19 on: October 03, 2013, 08:21:00 PM »

Hi,

How do i extend the LV in Linux???  ???

Shemeer

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Re: Help
« Reply #20 on: October 03, 2013, 08:22:35 PM »

Hello John,

First check whether is there free space available in the VG where the LV resides.
# vgdisplay or
# vgs

Now, extend the LV using below command: L option to specify the size to be increased.
# lvextend -L +5G /dev/vg00/lv01

Finally, extend the File system space: # resize2fs /dev/vg00/lv01


Thanks,
Shemeer

jamal

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Re: Help
« Reply #21 on: October 04, 2013, 07:21:32 AM »
hi



What are the advantages and disadvantages of a Hosted PBX?

thanks

prakash.datasoft

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Re: Help
« Reply #22 on: October 04, 2013, 07:26:18 AM »
hello sir



The advantages of a hosted PBX are the lower upfront costs, usually associated with less hardware costs.  The usual hardware need would be IP phones which would connect to the Internet through a router.  The provider maintains the software and servers and should provide technical support.  By connecting to the "PBX server" through the Internet a user is dependant upon their connections stability, as well as the quality of that connection.  As many Hosted PBX companies are smaller, relatively younger companies and the technology new, some issues can occur which can affect the stability of the service.  In addition, the contract may have "back end" costs, such as cancellations fess which would increase the overall cost of the service.

thanks
prakash
datasoft

johnmical

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Re: Help
« Reply #23 on: October 05, 2013, 01:16:00 AM »

Hi,  :D

Can Linux computer be made a router so that several machines may share a single Internet connection??
How to do it??  :) :D

Shemeer

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Re: Help
« Reply #24 on: October 05, 2013, 01:18:41 AM »

Hello John,

Yes, its is possible.
A Linux machine can be made a router. This is called "IP Masquerade."
IP Masquerade is a networking function in Linux similar to the one-to-many (1: Many) NAT (Network Address Translation) servers found in many commercial firewalls and network routers.
Linux IP Masquerading allows this functionality even if the internal computers do not have IP addresses.

The IP masquerading can be done by the following steps:

1. The Linux PC must have an internet connection and a connection to LAN. Typically, the Linux PC has two network interfaces-an Ethernet card for the LAN and a dial-up PPP connection to the Internet (through an ISP).

2. All other systems on your LAN use the Linux PC as the default gateway for TCP/IP networking. Use the same ISP-provided DNS addresses on all systems.

3. Enable IP forwarding in the kernel. By default the IP forwarding is not enabled. To ensure that IP forwarding is enabled when you reboot your system, place this command in the /etc/rc.d/rc.local file.

4. Run /sbin/iptables-the IP packet filter administration program-to set up the rules that enable the Linux PC to masquerade for your LAN.

Please try this.

Thanks,
Shemeer

johnmical

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Re: Help
« Reply #25 on: October 11, 2013, 07:06:42 PM »

Hi,  >:(

I want to ask something, why Linux is so popular?

Shemeer

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Re: Help
« Reply #26 on: October 11, 2013, 07:10:39 PM »

Hello john,

Linux is an operating system that uses UNIX like Operating system.
However, unlike UNIX, Linux is an open source and free software. Linux was originally created by Linus Torvalds and commonly used in servers.

Popularity of Linux is because of the following reasons

1. It is free and open source. We can download Linux for free and customize it as per our needs.
2. It is very robust and adaptable.
3. Immense amount of libraries and utilities
4. People who are familiar with UNIX can work on Linux with ease and comfort.
5. People who want great control over network security and on operating system

Thanks,
Shemeer