IPv4 Netmask reference

A netmask is a 32-bit mask used to divide an IP address into subnets and specify the networks available hosts. In a netmask, two bits are always automatically assigned. For example, in 255.255.225.0, "0" is the assigned network address; and in 255.255.255.255, "255" is the assigned broadcast address. The 0 and 255 are always assigned and cannot be used. There are plenty of these netmask references out there, but I prefer my own: hence this Tech...

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Download Tool

Packet tracer  (Cisco Simulator) Putty&nbs...

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masqurade nat cisco using overloading

Prerequerties Read the article guncyber-net.blogspot.com/2012/11/masqurade-nat-on-cisco-router.html first This is simple example for overloading : ================================================================ interface ethernet 0  ip address 10.10.10.1 255.255.255.0  ip nat inside !--- Defines Ethernet 0 with an IP address and as a NAT inside interface. interface ethernet 1  ip address 10.10.20.1 255.255.255.0  ip nat inside !--- Defines Ethernet 1 with an IP address and as a NAT inside interface. interface serial...

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Services And support

Services : 1. Setup and manage Mikrotik router BGP router Bandwidth Management Firewall And other networking services  2. Setup and manage Cisco router BGP Router Bandwidth Management Firewall Telephony services And other networking services 3. Setup and manage Cisco switch Vlan  Trunk Telepony services 4. Setup dan manage Ubuntu server Basic server Web server Mail server (zimbra) Smtp Firewall And other services  5. Internet services provider Dedicated Internet Services Wireless Connection Dedicated Internet Services Fiber...

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Installing squid on Ubuntu

Step 1 Update adn upgrade system : sudo apt-get update sudo apt-get upgrade Step 2 Install squid proxy server sudo apt-get install squid Stpe 3 Copy the original squid the configuration cp /etc/squid/squid.conf /etc/squid/squid.conf.original Step 4 Setting up configuration of squid 1. To set your Squid server to listen on TCP port 8888 instead of the default TCP port 3128, change the http_port directive as such:     http_port...

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