TP-LINK , PROLiNK , Linksys , D-Link Simulators

You can see simulators of different  routers:

Simulators are used for many contents as a training, experience. In which we used for some routers. That simulators can help you configuration of routers for learning & creating.
Follow links

TP-LINK

TP-LINK 2

PROLiNK

Linksys

D-Link

How to use ipconfig command

This command (ipconfig) used for your network cheking in command line, as shown in picture.It can show ip address, dns, subnet mask, gatway on ethernet adapter in command line.


Just put ipconfig command in command line and see result.

how to use nslookup command

Nslookup command used for your DNS quries, It can resolve your domain fore example yahoo.com msn.com
DNS ( domain name server ) provided by your ISP ( internet services provider ).

How to use flush dns command

Flush DNS in Windows Using the Command Prompt

Step 1 – Close all applications on your computer.
Step 2 – Open command line and enter “ipconfig /flushdns” After that “flushed the DNS Resolver Cache." 



Step 4 –  DNS resolve cache by typing “ipconfig /displaydns” at the command prompt.

Pfsense Static Route Planner

Two or more Networks are connected each other through pfsense static route Planner.  

There lan Networks acessible to each other.

Make some Pfsense  rules on WAN & LAN interfaces.

1- Firstly on side-A
 gateway & lan network of side-B are route on pfsense routing opetion. same process on side-B.

2-  On side-A
 local lan network of side-A allow rule rule in wan interface. same process on side-B.

3-   On side-A
 local lan network of side-B allow rules in lan interface. same process on side-B.

After that two or more sides tunnel created and there networks are acess to eachother through pfsense static route Planner.

SEE MORE HELP FULL VIDEO.

IPsec VPN on Isa Proxy Server 2006

 

IPsec called Internet protocol security. 

We can configure point to multi point IPsec vpn on Isa Proxy Server
Follow these steps & see print screen :

Firstly we can add a new remote site on virtual private network (VPN).

Secondly add a remote site network's ( lan ips & gatway ).

Third we can add a new rule in network rules opetion for allow to VPN trafic.

L2TP IPSEC VPN in ISA PROXY SERVER 2006

Figure 8.

Figure 7.

Figure 6.

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Figure - 1

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Figure 4.

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Figure 2.

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Figure 5.

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Figure 3.

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Layer Two Tunneling Protocol 

1. Creat a "L2TP Protocol" on Virtual Private Network. In this Protocle add Remote Side Local Network Ip's & Remote Server IP
as shown in figure 1. 

2.  Use pre shared key in L2TP IPSEC Protocole 
 as shown in figure 2.

3.  Go to Routing and Remote Access Policies add a new DIALUP VPN connection.
as shown in figure 3.

4.  After that automatically creat ID,Pasward in L2TP Protocole.
as shown in figure 4.

5. Add new rules in Network Rules.
as shown in figure 5.

6.  To add new access rules in "Firewall Policy" for allow "VPN" Trafic.In which rule we can allow all VPN Trafic or allow limited Trafic.
as shown in figure 6.

                               VPN has been created.

Although we can monitor our "VPN" connectivity & VPN clients. 
 as shown in figure 7 & 8.