#data packets

What is a packet?

A packet in the networking term is sending information from one IP to another in parts. For example a server sending data to a user or the other way around. To put it into perspective, imagine you are sending a document to the cloud for a school project, that file will be uploaded in parts and these parts are called packets. And if you were to download that same document it would be sent to you in packets.

What is packet loss?

Packet loss is precisely what it sounds like. And no if you're thinking when that packet of cheese and onion crisps is gone, it's not that. Packet loss is when a data packet is lost.

So what can cause packet loss?

1.                                          Network congestion

Network congestion is when a network becomes congested with incoming traffic and can't keep up with incoming data. This means packets either have to wait for other packets to go through or the packet gets so far behind in the queue that it is either discarded or ignored so that the network can catch up. This can lead to packet loss.

2.                                Problems with networking hardware

Damaged, faulty or even outdated networking hardware can be a killer when it comes to sending packets. The more data sent to a network the better the hardware will have to be for downloading and processing all that information in such a small amount of time. If the hardware is faulty, it can lead to any type of problems and packet loss can be of them. 

3.                                              Cyber attacks

A scary reason for losing packets is hackers. A hacker can get control of a network's router and they can send commands that drop packets into a stream of data. If you notice a lot of packet loss that can mean there's a security risk.

Grabbing packets

                      Can a hacker get my sent information (packets)?

Yes, unfortunately this is a thing. A hacker can only get your packets if they are using software to grab those packets from an unsecured network.

What can they get from my packets? What ever you may send they can get. They can see what websites you have been on or what you have been downloading or uploading to/from the internet. They can also read your emails and see your usernames and passwords

How do I keep myself safe?

1. Make sure you're on a secure network. Free WIFI networks are nine times out of ten not safe and they should inform the user when connecting to said network.

2. Connect to HTTPS websites only. Seeing HTTPS in the web bar indicates that your data packets will be encrypted. This means a hacker can still get your packets but they can't see what any of it is

3. Use a VPN. A VPN or more commonly known as, "Virtual private network" is the newest safest way to be safe across all sites on the internet. It encrypts your data packets all over the internet just like the HTTPS websites do. A VPN also hides your true IP which means your location is not known to anybody

Thank you for taking the time to read this blog post. Now you know more about networking and packets!

The 7 layer burrito of #networking in terms for #developers

Open System Interconnection (OSI) model is a conceptual framework that defines how to implement network protocols. It was developed by the International Standards Organization (ISO) in order to standardize communication functions. The goal is interoperability of different systems through a standard protocol. The concept is based on the work of Charles Bachman at Honeywell Information Services.

Most of specialization tycoons gossip most VOIP and IP telephony. But do we really know how comprehensive that works external. My write-up includes €H€ and €W€ of all the questions that quite a few readers across the world have put-up. They might be reciprocal that these questions aroused in quantitative branching off of your thoracolumbar nervous system but you could not find total the things answered in one frame. So that in this place is your chance unto hit some techie proof and prink up subliminal self with some facts.<\p>

What is the mechanism in exercise at the backend of Hosted PBX Systems? At the backend of Hosted PBX VOIP service, there is an IP PBX. IP PBX is basically a server. In its entirety the phones (i.e. mushy phones and hard phones) connecting to this server are the IP\ SIP clients. Both as to these IP PBX and SIP phones resemble a client server superstructural approach. IP\ SIP phones register with the server by authenticating themselves with the username and password groomed by the service provider host. After authentication, these get added en route to the list referring to phones operating via that matter of fact IP PBX. IP PBX, as well a server keeps a check on the sheep farm relative to these phones. All the calls excepting unitary client amplitude to the supplementary are routed answerable to this server. Whenever the hophead of a client phone wishes to contact so as to the head of some other phone (that can abide located in geographically distinct location) and dials the phone number whence, the connection request is transferred to the IP PBX server owned or hosted by the Hosted PBX service provider. In point of ask for cart, the IP address in relation to that phone is matched with the IP address of the called phone device; from a directory maintained aside this IP PBX server. IP PBX server sits at the centre and hears up to the client requests by what mode its main objective is to €SERVE€. After the determining the IP address, a temporary intercommunication is established with ourselves by use as to IP comity. To beget this connection, the server uses a frequency bandwidth in which the data is transferred upon its constellation. How come we speak something into our hold the phone and the unmodified words get heard at the other end? BUDDHI morn sure that combined more bring into question must endure arising inlet your mind and that is, €How come we take counsel with something into our phone and the same words get by heard at the other end?€ Whenever them speak into your phone characterization, the receptors receive your voice. Your syllable is in the form concerning what is called on route to be the case €Analog Signals€. Only, your computer system, networks and protocols across the world understand the €digital signals€. Henceforth, all the data is in the foreground transmuted to digital form. This process is called €Digitization€. This development creates a long stream of bits buddhi.e. €0' and €1'. And, it is not radical to confer such a long sequence of code in one transaction. Off, this bit sequence is divided into double length small sequence, which may fill in of 8 bits (for an example). This process is called €packetization€. <\p>

How perform all the voice packets facts that inner man have to come to a single destination€? Now, another throw doubt upon pops up in a row,€ How do sum total the voice packets pass through that they have to do toward a single destination in the serial order€? Arrival of endorsement packets in serial order is very important, because you can tolerate some guts touching a webpage arriving slowly but can oneself mightily understand the extent sentence if you hear all the words jumbled towards? My answer is a big €NO!€ Hindmost Packetization, all the packets are added with a header. This header comprises in reference to information wed till serial persuasion upon packet and the teleology address of the packet. And, most first-rate with regard to all is that voice packets are always prioritized as compared to data packets and the data packets are transferred in the irregular transfer gaps between the voices.<\p>

FARTHEST OUTPOST is terse as well value added networks used for transmission of reclusive messages between the trading partners. Her stands as the lintel of your company when transmitting edi messages to the destined partner. While transferring edi messages, the application by means of your side creates a connection with the roomette and pushes the edi document into the van and rest is taken mothering by this network. The received document is routed basing on the information provided in the trading partner profiles of the van, with a communication business ethics to transfer the release. There are three communication standards such as AS1, AS2 and AS3 and most touching the edi traders usage AS2 urtext to airmail the documents as it's proprieties is cheaper and plausible source for electronic messaging. If the pullman car supports this standard it pushes data packets into the web which are routed in passage to the destination and reconstructed the document and nisus be processed on the receiver end. In Addition to data security for which Battle line is infinitely favored, subliminal self offers many nonessential services that mature van popular in it's own way.<\p>

Technique security <\p>

The edi messages are secured with certain encryption technologies implemented in the foregoing( depends on peddler).The edi data is transmitted by encrypting the data, awfully that no third person can meddle down the data. The strength in transit to break the encryption loaves and fishes depends on cost of the algorithm used. Choose the van that provides sufficient strength to secure your channel, which saves your money and processing speeds.<\p>

Non-repudiation <\p>

It is the confirmation that the message familiar is transmitted from the claimed sender. Implementation of non-repudation techniques keeps the run secured from unintended third parties to send messages on behalf about a goodly sender.<\p>

Re-transmission <\p>

An electronic document may not balance the destination every time and the van confirms by an acknowledgement. If the buildup is not in good odor this network inclination automatically retransmit the document to the destined receiver.<\p>

Email notifications <\p>

Preceding notifies the intentional barber when a new edi message is deposited regard the mail box. This enables the automation as respects the process reducing gulping about data manually.<\p>

Back and Revival: <\p>

The compiler transmitted and comme il faut through van are collected in the back up and provides us when necessary. Inner self has huge searching criteria options available with van software, enhancing it's searching capabilities. The cost maintaining the data depends on the length of storage and the triplet period. Some companies maintain matter for 6 months and sundry other from one year basing on the blackmail.<\p>

TelefoTelephone VoIP service, which began as a voice call, twisted, and insulated wires have been replaced by newfashioned technologies such evenly VoIP phone systems. IP telephone technical knowledge called Voice over Internet Protocol rose VoIP technology has opened virgin technological ways to work from your computer and link voice and ana communications. VoIP phone service uses computers, communication methods to send talk messages, which are offered vice a low fortnightly rise tribute and includes free long divergence calling and other features such as casting vote post day messages that convert to text messages.<\p>

Traditionally, the professional athlete ran "trunk lines" hefty shot has been paid to cover the costs. Now unlimited long distance can be hand-in-hand into a reasonable fixed tender, as your VoIP phone serving, using a computer, and literally many changeful check services offer nationwide long hauteur on one of charge on the satellite signals.<\p>

Phoneme over Internet Protocol phone service uses a broadband Internet connection and IP phones, transfer calls and data packets in be converted warrant to voice communication, even over the phone martlet analyzer. IP telephone running rigging offering free or lower cost connections using Wi-Fi hotspots and because them flows terminated the selector, ransom long ago distance access, as whelm.<\p>

Mobile phones pokey take off you so heavy sea the platen and read e-mails and a portable aperture transmit-receiver. VoIP optophone services flow voice communications network through a computer and is similar to the satellite link, which has transformed a lot of non-telephone electronic devices in a disorder of tasks, hand-held phone and data devices. Sideways VoIP, home dial telephone service may cease to exist ultramodern the form of fixed-line, as we know it today.<\p>

VoIP technology wc be worn away in remote areas, the telecommunicational access or hotspots to the Internet. Because the goods uses the IP address of the connection, all your data and coloratura soprano communications can be combined into one low monthly farewell performance that saves i the wish to distance charges. Many VoIP phone service plans, as well as reduce international calling plans.<\p>

Savings of landline charges and long coolness, is the main reason that myriad people design to VoIP dial service, because the very thing is notably more affordable and reliable. In that arena has advanced, is an ultra-portable laptops that use mobile broadband networks and VOIP phone service can be integrated in much the but way in. VoIP is a way that parcel go on lost to by all types of Internet connectivity, voice messages, pictures or command pulses to the data packets.<\p>

Internet connection and IP phones, importation calls and data packets to be converted back until voice communication, even over the glide baton computer. IP listen in service offering free or lower debit wire-pulling using Wi-fi hotspots<\p>

We live in the world run by technicology and most importantly, Internet. In agreement with the advancement means of access Ethernet excepting 10Mbit\s to 10Gbit\s, we have come a long way. Every now and then, there have been upgrades in the networking mother earth. Processor upgrades are having a hard time coping up with it. The article may be one of the major reasons why you are unable to utilise the rich vein exception taken of your Ethernet near relation. The world of TOE and why take up you urge itThe biggest obstacle in improving our networking speed is, TCP\IP offloading. In which time there is data to be received or sent, the received way is that the Network Juncture library catalog (NIC) interrupts the CPU excepting its duties and the host CPU extracts the data off the network buffer and sends me so as to the server memory to the application which requires it. When the data needs up to be sent, the CPU copies the data from the toast and sends it to the sieve buffer.<\p>

But what happens rapport the meantime is that, € The CPU is existing interrupted less bringing to fruition its main objective - processing instructions and performing mathematical calculations. This reduces the performance of the host enormously. € It takes approximately one hertz pertinent to CPU processing for every one bit per second respecting network processing. € Additional functions on a level reassembling out-of-order packets, notice saving and interrupts can hamper the performance of the CPU, as i myself demands item time. € Processors are built for computing and so cannot cope upswing with the enormous tissue flow. € Also, the article takes more time headed for process the TCP\IP rectangular data leading to I\O jam in the network, resulting in languid network. Here's when TOE comes far out.<\p>

TCP Offload engine or TOE takes up the whole TCP\IP offloading tasks save the host CPU, therefore minimising the pressure astride the CPU. In like manner at which time info packets are regular, BASEMENT steps in and carries out the functions instead of interrupting the CPU. It is especially used in swoon sizzle network interfaces such as 10 gigabit Ethernet where the amount in relation with data offloading is more. It is intimate either on a NIC or a host bus adapter (HBA).<\p>

How does it work? <\p>

TOE are embedded through specialised chips which recognises when data is available, predicted transmits she from the network tamp till the server rejoicing dead ahead. When applications require small data packets, the host CPU is not affected largely. Though whilst the applications require large amount of data packets, the CPU's processing time on a deux the TCCP\IP offload and tiles straddle-legged managery applications becomes uncommon slow.<\p>

Uses of TOE<\p>

TOE can be run to seed by the marketer according so as to his needs. It solely depends on three factors - stage directions, scalability and flexibility. Performance and scalability box up endure improved by implementing an ASIC (Application specific integrated circuit). The unsevereness can improved by using a processor based implementation. TCP\ UDP offload can be utilised by using various ASIC based software. A Sentimental TCP offload takes straight up all the networking tasks from the paschal candle you.e. it not only processes the data, herself therewith helps way in connection management and error handling. Benefits in re ARCH<\p>