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29 February 2020, and i'm starting blog on Onion Theory of Network Security. In this theory we will discuss about secure LAN network attack network tap and information gathering next generation internet protocol. All network LAB will based on CCNAS and CCNPS. Information Security Internal Network Security Physical Security Access Security at last i want to say that.., study about network securing   but not study about network destroying. Regards

Let begging about deference between IPv6 and IPv4. 1: Length IPv4: 32 Bit IPv6: 128 Bit 2: Number of header fields IPv4: 12 fields IPv6: 8 fields 3: Checksum IPv4: Has checksum fields IPv6: Does not have checksum fields 4: Examples IPv4: 1.1.1.1 150.50.0.1 192.168.10.1 224.0.0.5 127.0.0.1 IPv6: ::1 2001:0db8:0000:0000:0000:ff00:0042:7879 fec0:0:0:ffff::2 fe80::89b4:75f6:816:55ac 2001:4860:4860::8888 5: Type of Addresses IPv4: Unicast, broadcast, and multicast. IPv6: Unicast, multicast, and anycast. 6:Number of classes IPv4: IPv4 offers five different classes of IP Address. Class A to E. IPv6: IPv6 allows storing an unlimited number of IP Address. 7: VLSM support IPv4: IPv4 support VLSM (variable length subnet mask). IPv6: IPv6 does not offer support for VLSM. 8: Network Configuration IPv4: Networks need to be configured either manually or with DHCP. IPv4 had several overlays to handle Internet growth, which require more maintenance efforts. IPv6: IPv6 support autoconfigur...

The Internetwork Operating System is a family of proprietary network operating systems used on several router and network switch models manufactured by Cisco Systems. The system is a package of routing, switching, internetworking, and telecommunications functions integrated into a multitasking operating system .  

 Fortinet’s operating system, FortiOS, is the foundation of the Fortinet Security Fabric, consolidating many technologies and use cases into a simplified, single policy and management framework. Basic 1. To check all configuration. # show full-configuration # show full-configuration | grep XXXX # show full-configuration | grep -f XXXX (Display tree view) 2. To check NTP status. # execute time # get system ntp # diagnose sys ntp status 3. Save configuration & exit. # end 4. Don't save configuration & exit. # abort 5. How to delete security policy. # config firwall policy # delete 1  # end 6. How to delete router. # config router static # delete 1 # end 7. To check help. # ? 8. To ping IP. # execute ping 192.168.0.1 9. To traceroute IP. # execute traceroute 192.168.1.1 10. To access using telnet. # execute telnet 192.168.0.10 # execute telnet 192.168.0.1 22 11. To access using ssh. # execute ssh user@192.168.0.10 # execute ssh user@192.168.0.10 23 12. To shutdown sy...