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Category Archives for "Networking"

Unix: How random is random?

On Unix systems, random numbers are generated in a number of ways and random data can serve many purposes. From simple commands to fairly complex processes, the question “How random is random?” is worth asking.EZ random numbers If all you need is a casual list of random numbers, the RANDOM variable is an easy choice. Type "echo $RANDOM" and you'll get a number between 0 and 32,767 (the largest number that two bytes can hold).$ echo $RANDOM 29366 Of course, this process is actually providing a "pseudo-random" number. As anyone who thinks about random numbers very often might tell you, numbers generated by a program have a limitation. Programs follow carefully crafted steps, and those steps aren’t even close to being truly random. You can increase the randomness of RANDOM's value by seeding it (i.e., setting the variable to some initial value). Some just use the current process ID (via $$) for that. Note that for any particular starting point, the subsequent values that $RANDOM provides are quite predictable.To read this article in full or to leave a comment, please click here

Unix: How random is random?

On Unix systems, random numbers are generated in a number of ways and random data can serve many purposes. From simple commands to fairly complex processes, the question “How random is random?” is worth asking.EZ random numbers If all you need is a casual list of random numbers, the RANDOM variable is an easy choice. Type "echo $RANDOM" and you'll get a number between 0 and 32,767 (the largest number that two bytes can hold).$ echo $RANDOM 29366 Of course, this process is actually providing a "pseudo-random" number. As anyone who thinks about random numbers very often might tell you, numbers generated by a program have a limitation. Programs follow carefully crafted steps, and those steps aren’t even close to being truly random. You can increase the randomness of RANDOM's value by seeding it (i.e., setting the variable to some initial value). Some just use the current process ID (via $$) for that. Note that for any particular starting point, the subsequent values that $RANDOM provides are quite predictable.To read this article in full or to leave a comment, please click here

Unix: How random is random?

On Unix systems, random numbers are generated in a number of ways and random data can serve many purposes. From simple commands to fairly complex processes, the question “How random is random?” is worth asking.EZ random numbers If all you need is a casual list of random numbers, the RANDOM variable is an easy choice. Type "echo $RANDOM" and you'll get a number between 0 and 32,767 (the largest number that two bytes can hold).$ echo $RANDOM 29366 Of course, this process is actually providing a "pseudo-random" number. As anyone who thinks about random numbers very often might tell you, numbers generated by a program have a limitation. Programs follow carefully crafted steps, and those steps aren’t even close to being truly random. You can increase the randomness of RANDOM's value by seeding it (i.e., setting the variable to some initial value). Some just use the current process ID (via $$) for that. Note that for any particular starting point, the subsequent values that $RANDOM provides are quite predictable.To read this article in full, please click here

Hyper-converged infrastructure – Part 1 : Is it a real thing ?

Recently I was lucky enough to play with Cisco Hyperflex in a lab and since it was funny to play with, I decided to write a basic blog post about the hyper-converged infrastructure concept (experts, you can move forward and read something else ? ). It has really piqued my interest. I know I may be […]

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IBM touts full data encryption in new Z series mainframes

IBM has introduced the 14th generation of its Z series mainframes, which still sell respectably despite repeated predictions of their demise. One of the major features being touted is the simple ability to encrypt all of the data on the mainframe in one shot. The mainframe, called IBM Z or z14, introduces a new encryption engine that for the first time will allow users to encrypt all of their data with one click—in databases, applications or cloud services—with virtually no impact on performance.The new encryption engine is capable of running more than 12 billion encrypted transactions every day. The mainframe comes with four times more silicon for processing cryptographic algorithms over the previous generation mainframe along with encryption-oriented upgrades to the operating system, middleware and databases.  To read this article in full or to leave a comment, please click here

IBM touts full data encryption in new Z series mainframes

IBM has introduced the 14th generation of its Z series mainframes, which still sell respectably despite repeated predictions of their demise. One of the major features being touted is the simple ability to encrypt all of the data on the mainframe in one shot. The mainframe, called IBM Z or z14, introduces a new encryption engine that for the first time will allow users to encrypt all of their data with one click—in databases, applications or cloud services—with virtually no impact on performance.The new encryption engine is capable of running more than 12 billion encrypted transactions every day. The mainframe comes with four times more silicon for processing cryptographic algorithms over the previous generation mainframe along with encryption-oriented upgrades to the operating system, middleware and databases.  To read this article in full or to leave a comment, please click here

IBM touts full data encryption in new Z series mainframes

IBM has introduced the 14th generation of its Z series mainframes, which still sell respectably despite repeated predictions of their demise. One of the major features being touted is the simple ability to encrypt all of the data on the mainframe in one shot. The mainframe, called IBM Z or z14, introduces a new encryption engine that for the first time will allow users to encrypt all of their data with one click—in databases, applications or cloud services—with virtually no impact on performance.The new encryption engine is capable of running more than 12 billion encrypted transactions every day. The mainframe comes with four times more silicon for processing cryptographic algorithms over the previous generation mainframe along with encryption-oriented upgrades to the operating system, middleware and databases.  To read this article in full or to leave a comment, please click here

IBM touts full data encryption in new Z series mainframes

IBM has introduced the 14th generation of its Z series mainframes, which still sell respectably despite repeated predictions of their demise. One of the major features being touted is the simple ability to encrypt all of the data on the mainframe in one shot. The mainframe, called IBM Z or z14, introduces a new encryption engine that for the first time will allow users to encrypt all of their data with one click—in databases, applications or cloud services—with virtually no impact on performance.The new encryption engine is capable of running more than 12 billion encrypted transactions every day. The mainframe comes with four times more silicon for processing cryptographic algorithms over the previous generation mainframe along with encryption-oriented upgrades to the operating system, middleware and databases.  To read this article in full or to leave a comment, please click here

NASA’s CTO tells enterprises how to network IoT

The internet of things combined with cloud computing is the platform for innovation that is used by NASA’s Jet Propulsion Laboratory and that should be used by enterprises, but it means setting up the right network infrastructure, JPL’s CTO says.“Number one, build an IoT network that’s separate from the regular network,” says Tom Soderstrom, the JPL CTO. “That’s what we did, and we found that it was amazing.”To read this article in full or to leave a comment, please click here

Jet Propulstion Lab’s IT CTO tells enterprises how to network IoT

The internet of things combined with cloud computing is the platform for innovation that is used by NASA’s Jet Propulsion Laboratory and that should be used by enterprises, but it means setting up the right network infrastructure, JPL’s IT CTO says.“Number one, build an IoT network that’s separate from the regular network,” says Tom Soderstrom, the JPL IT CTO. “That’s what we did, and we found that it was amazing.”To read this article in full or to leave a comment, please click here

Jet Propulsion Lab’s IT CTO tells enterprises how to network IoT

The internet of things combined with cloud computing is the platform for innovation that is used by NASA’s Jet Propulsion Laboratory and that should be used by enterprises, but it means setting up the right network infrastructure, JPL’s IT CTO says.“Number one, build an IoT network that’s separate from the regular network,” says Tom Soderstrom, the JPL IT CTO. “That’s what we did, and we found that it was amazing.”To read this article in full or to leave a comment, please click here

47% off Mpow Fully Submersible Waterproof Phone Dry Bag, 2-Pack – Deal Alert

For extreme conditions, this phone pouch features a simple snap and lock design that easily keeps out water, snow, dust, sand, and dirt, without hindering use of touch-screen or camera. It fits all large smartphones up to 6 inches, as well as your cash, documents, credit cards, or any similar sized items you need safe from the elements while outdoors. The 2-pack's typical list price of $16.99 has been reduced 47% right now to $8.99. See this deal on Amazon.To read this article in full or to leave a comment, please click here

IBM wants you to encrypt everything with its new mainframe

IBM wants businesses to use its new z14 mainframe to encrypt pretty much everything -- an approach to security it calls pervasive encryption.Encrypting everything, and restricting access to the keys, is one way to reduce the risk and impact of data breaches. It can reduce the threat surface by 92 percent, according to research commissioned by IBM.To make such pervasive encryption viable, the z14 has four times as much silicon devoted to cryptographic accelerators as its predecessor, the z13, giving it seven times the cryptographic performance.To read this article in full or to leave a comment, please click here

IBM wants you to encrypt everything with its new mainframe

IBM wants businesses to use its new z14 mainframe to encrypt pretty much everything -- an approach to security it calls pervasive encryption.Encrypting everything, and restricting access to the keys, is one way to reduce the risk and impact of data breaches. It can reduce the threat surface by 92 percent, according to research commissioned by IBM.To make such pervasive encryption viable, the z14 has four times as much silicon devoted to cryptographic accelerators as its predecessor, the z13, giving it seven times the cryptographic performance.To read this article in full or to leave a comment, please click here

IBM wants you to encrypt everything with its new mainframe

IBM wants businesses to use its new z14 mainframe to encrypt pretty much everything -- an approach to security it calls pervasive encryption.Encrypting everything, and restricting access to the keys, is one way to reduce the risk and impact of data breaches. It can reduce the threat surface by 92 percent, according to research commissioned by IBM.To make such pervasive encryption viable, the z14 has four times as much silicon devoted to cryptographic accelerators as its predecessor, the z13, giving it seven times the cryptographic performance.To read this article in full or to leave a comment, please click here

IBM wants you to encrypt everything with its new mainframe

IBM wants businesses to use its new z14 mainframe to encrypt pretty much everything -- an approach to security it calls pervasive encryption.Encrypting everything, and restricting access to the keys, is one way to reduce the risk and impact of data breaches. It can reduce the threat surface by 92 percent, according to research commissioned by IBM.To make such pervasive encryption viable, the z14 has four times as much silicon devoted to cryptographic accelerators as its predecessor, the z13, giving it seven times the cryptographic performance.To read this article in full or to leave a comment, please click here

Juniper VXLAN Configs: Configuring VXLANs on Juniper MX Series Routers

Today I am going to have the scenario where i am going to explain and provide you the VXLAN configurations on Juniper MX series router with the topology. VXLAN as you already knew that these are Virtual extensible LAN used to extend the layer 2 and layer 3 traffic across the public or private network or generally in the case of two datacenter connectivity.

I wrote some of the articles where i put some of the configurations and the basic information about the VXLAN. Below are the links if you want to review the same

Above are some of the topics on the VXLAN and I will come up with more VXLAN topics in the near future. Below is the topology of the VXLAN where VXLAN is configured to run on a default bridge domain. In this topology, the VTEP interfaces sources are configured to the loopback address, and VLAN groups are configured under bridge domains with VXLAN enabled. Here the interfaces are configured for VLAN tagging and Continue reading
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