Cheat Sheets Download All (.zip) Wall Posters (36" x 24") Interior Gateway Protocols v1.0 (1 page) Protocols v2.1 (2 pages) v2.1 (1 page) First Hop Redundancy v2.0 (1 page) v2.2 (2 pages) IPsec IPv4 Multicast IPv6 v2.0 (2 pages) v1.2 (1 page) v1.1 (1 page) Spanning Tree Applications Wireshark Display Filters scapy tcpdump Reference Common Ports IOS IPv4 Access Lists IPv4 Subnetting Syntax Markdown MediaWiki Technologies Frame Mode MPLS IOS Zone-Based Firewall QoS VLANs Voice VOIP Basics Miscellaneous Cisco IOS Versions Physical Terminations
VLSM- VLSM Explained. How to calculate and use VLSM step by step Variable Length Subnet Masking - VLSM - is a technique that allows network administrators to divide an IP address space into subnets of different sizes, unlike simple same-size Subnetting. Variable Length Subnet Mask (VLSM) in a way, means subnetting a subnet. To simplify further, VLSM is the breaking down of IP addresses into subnets (multiple levels) and allocating it according to the individual need on a network. It can also be called a classless IP addressing. A classful addressing follows the general rule that has been proven to amount to IP address wastage. Before you can understand VLSM, you have to be very familiar with IP address structure. The best way you can learn how to subnet a subnet (VLSM) is with examples. Looking at the diagram, we have three LANs connected to each other with two WAN links. The first thing to look out for is the number of subnets and number of hosts. HQ = 50 host RO1 = 30 hosts RO2 = 10 hosts 2 WAN links We are borrowing 2 bits with value of 64.
What Is a Packet Sniffer? (with pictures) A packet sniffer is a device or program that allows the user to eavesdrop on traffic traveling between networked computers. The program will capture data that is addressed to other machines, saving it for later analysis. All information that travels across a network is sent in "packets." For example, when an email is sent from one computer to another, it is first broken up into smaller segments. In the example of the simplest network where computers share an Ethernet wire, all packets that travel between the computers are "seen" by every computer on the network. A slightly safer environment is a switched Ethernet network. There are ways to hack the switch protocol, however. These programs can also be used on the Internet to capture data traveling between computers. A packet sniffer is not just a hacker's tool. The best defense against eavesdropping is a good offense: encryption.
Cisco IOS Cheat Sheet These commands are used on all Cisco devices running the Cisco IOS. If you are unfamiliar with Cisco devices please see: Routers, Using the Cisco IOS. · Config# terminal editing - allows for enhanced editing commands · Config# terminal monitor - shows output on telnet session · Config# terminal ip netmask-format hexadecimal|bit-count|decimal - changes the format of subnet masks · Config# hostname ROUTER_NAME · Config# banner motd # TYPE MESSAGE HERE # - # can be substituted for any character, must start and finish the message · Config# description THIS IS THE SOUTH ROUTER - can be entered at the Config-if level · Config# clock timezone Central -6 # clock set hh:mm:ss dd month yyyy - Example: clock set · Config# config-register 0x2100 - ROM Monitor Mode · Config# config-register 0x2101 - ROM boot · Config# config-register 0x2102 - Boot from NVRAM · Config# boot system tftp FILENAME SERVER_IP - Example: boot system tftp 2600_ios.bin 192.168.14.2 · Config# boot system ROM · Config# int Ethernet 0
Bluesnarfing Bluesnarfing is the unauthorized access of information from a wireless device through a Bluetooth connection, often between phones, desktops, laptops, and PDAs (personal digital assistant.). This allows access to a calendar, contact list, emails and text messages, and on some phones, users can copy pictures and private videos. Both Bluesnarfing and Bluejacking exploit others' Bluetooth connections without their knowledge. While Bluejacking is essentially harmless as it only transmits data to the target device, Bluesnarfing is the theft of information from the target device. Current mobile software generally must allow a connection using a temporary state initiated by the user in order to be 'paired' with another device to copy content. Any device with its Bluetooth connection turned on and set to "discoverable" (able to be found by other Bluetooth devices in range) may be susceptible to Bluejacking and possibly to Bluesnarfing if there is a vulnerability in the vendor's software.
connections.fscj.edu - Welcome © Florida State College at Jacksonville Employment Opportunities | Disclaimer | Copyright | Internet Privacy Policy | Equal Access/Equal Opportunity | Gainful Employment Florida State College at Jacksonville is a member of the Florida College System and is not affiliated with any other public or private university or college in Florida or elsewhere. FSCJ provides equal opportunity for educational opportunities and employment to all. If you have concerns regarding discrimination, harassment or retaliation, please contact the College's Equity Officer at (904) 632-3221, toll-free at (877) 578-6801 or via email at equityofficer@fscj.edu for information. Florida State College at Jacksonville is accredited by the Southern Association of Colleges and Schools Commission on Colleges to award the baccalaureate and associate degree.
Bluejacking This Siemens M75 is Bluejacking the Sony Ericsson K600i pictured below This Sony Ericsson K600i is getting Bluejacked by the Siemens M75 pictured above. The text at the bottom of the screen reads "Add to contacts?" in Norwegian. Bluejacking is the sending of unsolicited messages over Bluetooth to Bluetooth-enabled devices such as mobile phones, PDAs or laptop computers, sending a vCard which typically contains a message in the name field (i.e., for bluedating or bluechat) to another Bluetooth-enabled device via the OBEX protocol. Bluetooth has a very limited range, usually around 10 metres (32.8 ft) on mobile phones, but laptops can reach up to 100 metres (328 ft) with powerful (Class 1) transmitters. Origins[edit] Bluejacking was reportedly first carried out by a Malaysian IT consultant who used his phone to advertise Sony Ericsson. Usage[edit] Bluejacking is also confused with Bluesnarfing which is the way in which mobile phones are illegally hacked via Bluetooth. See also[edit]
Hacking for Beginners One of the best things about computers is how dynamic they are. There is so much information about computers and it changes constantly. As a hacker, you are at the leading edge of changes to technology. This makes it a very exciting and interesting field of study and can even lead to some awesome job opportunities as a computer security expert. Hackers are often misrepresented as “evildoers” bent on stealing money and personal information from individuals and businesses. White Hat Hackers are benevolent security experts that do not seek profits from illegal network access. Black Hack Hackers are the people who use their knowledge of computers for illegal or unethical purposes. The point – use your computer knowledge to promote learning and security; not to be a thief or criminal. By “thinking outside the box,” hackers are able to solve problems and accomplish mundane tasks more efficiently by leveraging their knowledge of computer systems. Programming Network Hacking
Hyper-V Hyper-V, codenamed Viridian[1] and formerly known as Windows Server Virtualization, is a native hypervisor; it can create virtual machines on x86-64 systems.[2] Starting with Windows 8, Hyper-V supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V was first released along Windows Server 2008 and became a staple of the Windows Server family ever since. History[edit] A beta version of Hyper-V was shipped with certain x86-64 editions of Windows Server 2008. Microsoft provides Hyper-V through two channels: Part of Windows: Hyper-V is an optional component of Windows Server 2008 and later. Hyper-V Server[edit] Hyper-V Server 2008 was released on October 1, 2008. Hyper-V Server 2008 R2 (an edition of Windows Server 2008 R2) was made available in September 2009 and includes Windows PowerShell v2 for greater CLI control.
Cloud Storage and Backup News, Reviews and Promos - Cloud Storage Buzz