Dynamic Configure DHCP on a Cisco CCNA - Part 2

Step 1: The first step is to turn the service on the Cisco router

Router (config) # service dhcp

This command allows the service on Cisco routers and relay features on your router.

To remove the command using the same command without the beginning

Configure the DHCP pool name

Configure the name of the pool and use the following command in global configuration mode:

Router (config) # ip dhcp pool name

This command creates a name forService IP address pool and places you in how to configure the pool, the rapid changes in dhcp-config #.

Configuring the Subnet Mask address pool and the next step is to establish a subnet mask and the address pool you just created. This category includes the valid range of IP addresses that the service will be assigned to DHCP clients:

Router (DHCP-config) # network network-number [mask | prefix-length]

The prefix length indicates the number of bits that comprise the address prefix.The prefix is an alternative way to specify the network mask for the client.

Set the domain name for the customer The customer enters the domain name for a client in that domain.

Router (DHCP-config) # domain domain

Configuring the IP Domain Name System server for the client to client queries DNS server IP when they need to URLs, host names or IP addresses.

Router (DHCP-config) # dns - server address [address2... Address5]

Specifies the IP address of a DNS server available to a customer. A single IP address is necessary, but you can configure up to eight of them.

Configure the default router for the client to the network path and need to know the IP address of the default gateway / default router. The IP address of default router on the same subnet as the DHCP client.

Router (DHCP-config) # default-router address [address2... address8]

Specifies the IP address of a DNS server available to a customer. A single IP address is necessary, but you can configure up to eight of them.

Set the Address Lease Time The default lease time for each IP address assigned by a server days. This is the time that the address location is valid. Changing the value of an IP address:

Router (DHCP-config) # lease {days [hours] [minutes] | infinite}

ConfigureDynamic DHCP on a Cisco router Part 2

For the CCNA, you must have a thorough knowledge of how Dynamic Host Configuration Protocol (DHCP) to configure the IP address information of a Cisco router to serve one or more subnets

DHCP Configuration Example

Router (config) # service dhcp

Router (config) # ip dhcp pool CCNA

Router (DHCP-config) # network 10.1.1.0 255.255.255.0

Router (DHCP-config) # domainCOMMSUPPORT.LOCAL

Router (DHCP-config) # dns - server 10.1.1.1

Router (DHCP-config) # default-router 10.1.1.254

Router (DHCP-config) # lease 5 2 3

The above configuration will be assigned an address in the range of 10.1.1.253 10.1.1.2 and every client, the server will also tell customers that the commsupport.local domain is that the DNS server on the 10.1.1.1 subnet, a known how to use gateway 10.1.1.254and respecting the address for 5 days 2 hours and 3 minutes.

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Configure the FTP server using FileZilla on Windows 7

FTP stands for File Transfer Protocol, if you want to know more, you can check on Wikipedia. FTP is actually less popular nowadays, as many users of other protocols for exchanging files, especially P2P BT. FTP, still play an important role.

Let's say that you have a file that is 300 MB and you want to send to your friend overseas immediately. What would you do? Usually email attachment limit (usually not so highas 300 MB) and will be extremely slow and unstable when you try to transfer via instant messaging software like MSN. The best bet is to configure the FTP server at home and allow your friend to download from your computer. The mind, then you have an account to view files and take them anywhere.

If all the remote desktop setting up your home, you probably leave your computer on 24 * 7 just so that you can not accesswhenever you want. Or if you have a spare computer as I do, why do not you try to use the people? I'll show you how your computer to an FTP server.

After trying some of the FTP server software, freeware FileZilla Server has been my choice.

Ok, let's start.

The first thing to do is install the package just downloaded (the link above), installation is fairly simple and I do notto arrive at retail.

After installation, FileZilla server starts and you should be able to see the following interface:

Before you go ahead and set the ports, we want a user to ensure that the works to add. We are going to choose "Edit -> User" (. If there is a link, just below the "Edit" in the menu bar)

I have a user called "anonymous", and make sure the "Password" box is checked, because I'd be likemy account public FTP visitors can download from my FTP server. If you want other accounts, make sure the "Password" is selected on the basis of secure access to enforce. For many users, you can use another location, or you can just create a group and assign the path to all members of that group.

On the left you will see the "Shared Folders" the folder you want to "anonymous" as well as the rights that would seemfeasible. When finished, click OK.

Note: The shared folder is the root directory that you selected (in this case, is "anonymous") could be seen, but all the folders that the folders are visible to the user.

The thing that Windows users, you probably missed when setting up FileZilla is the firewall. About the installation, even if you have the means to allow computers to access your FTP Server, there is something wrongis correct.

Locate your firewall settings, you can find FileZilla Server Interface can be allowed in the list, but this is the problem. We need to FileZilla Server Core instead of the interface. The interface is just the user interface for end users like you and me for access to the basic program. Then click Add to select "FileZilla Server" from the installation folder:

Now OK.

If you have two or more computers at home,you can buy a test. First check your internal IP address. If you do not know how to do it, check out my previous post, set the remote desktop. For example, I discovered that the internal IP of 192.168.1.111 is my server, then on another computer, I type in just ftp://192.168.1.111.

Note: If a port other than 21, say that the port 22, type ftp://192.168.1.111:22 if you do not know which port is, in fact, is underinstitution -> General Settings: If it works for you, we will go, other than those new to read instructions or ask me.

FTP server is intended to cover in a network, if you just try to set it up at home, then you are done, but according to the situations introduced in my first paragraph, I would like to see the world.

How a Remote Desktop, we will establish port forwarding. In my case, because my FileZilla Server on port 21 on my computer, Ineed a way to send the FTP application on this port. Ideally it would be nice if you can configure the port 21 and outer door, because every time you type in the address bar, we do not need to type the port number (default port of FTP browser is 21). However, most ISPs (Internet Service Provider), for example, I use Telus blocking port 21. We need a different port as our outer door to find:

I suggest port 5050 as my remote port and all FTP requests through this port willNext to port 21 on my server. I am using D-Link DIR-825, if your router, refer to the instruction manual.

If dynamic DNS, then you have done, if not, go back and read my post, it is very simple.

Let's say you have your dynamic DNS name as myServerAtHome.no-ip.org, then when you're out, you can simply type ftp://myServerAtHome.no-ip.org:5050, but when you get home, you may onlyftp://192.168.1.111.

You can set your browser to visit your FTP server, though, I recommend using FTP software. FileZilla Server is a great FTP server and client software they have. You can check the website FileZilla if you do not have one, why not try FileZilla Client?

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Install and configure the DNS server BIND

DNS is crucial to your server if you want to be accessible on the Internet. The reason is that domain names are much easier for users to type and easy to remember. So, you have a DNS server if you think you have Internet users connect to the server. The default DNS server is the Berkeley Internet Name Domain (BIND). BIND is available via the Internet or ISC Software Consortum isc.org. InIn addition, available through your BIND distribution. In the case of BIND, I would recommend you to download the packages via the website of your distribution. Before a domain name, you must register first, that there are several services available to register domain names. Once installed, then edit the file / etc / named.conf and add the following to it:
zone "desireddomain.com" {
type master;
file "desireddomain.db";
};

You are obviously replacethe "strings desireddomain, if necessary, with the new domain name. This voice tells the service specified that this server is the master server (DNS 2 DNS servers needed for redundancy). Now then, we will now use the file" desireddomain.db "which should be placed in the name of the working directory, which is specified at the beginning of / etc / named.conf. In this file, we need the following information:

IN SOA nameofyourfirstdnsserver.com. nameofyourseconddnsserver.com. (
1000000; Series
10,800; Refresh - 3 hours
3600; Again - 1 hours
86,400; expired - 24 hours
3600), Minimum - 1 hour

IN NS nameofyourfirstdnsserver.com

www IN A ipaddressofwebserver
FTP in a ipaddressofftpserver
SMTP in a ipaddressofmailserver

This must be stored in the directory specified in the first lines of / etc / named.conf. Now we will configure a secondary DNS server or a slave> DNS Servers. This is much easier than setting up the primary server. The only change the named.conf file / etc / on the secondary server. The following should be stored in the file / etc / named.conf file:

zone "desireddomain.com" {
type slave;
file "desireddomain.db";
};

Now we can get the configuration file of the first server using a utility that comes with BIND, named-xfer. We will do this by entering:

named-xfer-zdesireddomain.com desireddomain.db-f \-s 0 addressofprimarynameserver

This will copy the configuration file of the primary DNS server). BIND should start automatically, if not, then you can start with the following command (for most systems:
/ Etc / init.d / named start

You must allow somewhere between 24 and 48 hours for the DNS records updated when you move the DNS server from host to host. DNS is a protocol for large andmakes our lives easier, we're too lazy (like a domain name instead of IP).

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