Mobil Cihazlar Güvenli Kullanma

WEBVTT 00:00:02.685 --> 00:00:13.069 Ja, Freunde, bisher haben wir uns damit befasst, wie mobile Geräte über ein Netzwerk und Bluetooth miteinander verbunden werden und wie sie in Verbindung treten können. 00:00:13.129 --> 00:00:16.230 Jetzt werden wir uns grundlegende Informationen ansehen, um mobile Geräte sicher zu nutzen, damit wir sowohl unsere persönlichen Daten als auch unseren Datenspeicher schützen können, während wir das Internet nutzen oder ein mobiles Gerät verwenden. 00:00:16.730 --> 00:00:26.133 Grundlegende Informationen zur Verbindung, mobile Gerätesicherheit zuerst, zweitens die Verwendung von Passwörtern oder PINs, drittens die Verwendung von VLAN SSID, 00:00:26.193 --> 00:00:30.835 viertens das Blockieren von MAC-Adressen, fünftens die Datensicherung, sechstens das Abschalten der drahtlosen Verbindung, siebtens sichere Online-Shops und deren Nutzung. 00:00:31.524 --> 00:00:59.094 Unter sieben Hauptthemen werden wir nun die Sicherheit und die Nutzung von mobilen Geräten behandeln. 00:01:01.567 --> 00:01:09.994 Die Sicherheit mobiler Geräte dient der Speicherung von Kommunikationsdaten in mobilen Geräten wie Laptops, Tablets, Mobiltelefonen und Smartphones sowie sensiblen Informationen wie internen Unternehmensdokumenten und Geldern. 00:01:10.014 --> 00:01:12.876 Und während sie gespeichert werden, bedeutet dies, dass diese Informationen geschützt werden. 00:01:15.118 --> 00:01:17.921 Und das Speichern bedeutet den Schutz dieser Informationen. 00:01:18.181 --> 00:01:22.985 Aufgrund ihrer handlichen Größe können diese Geräte speziellen Gefahren ausgesetzt sein. 00:01:23.675 --> 00:01:34.779 Denn wenn wir zum Beispiel an ein Mobiltelefon denken, ein Mobiltelefon, das wir überallhin mitnehmen, auf den Tisch legen, manchmal in verschiedene Gebäude und Institutionen bringen 00:01:34.819 --> 00:01:36.180 und dort abgeben. 00:01:36.260 --> 00:01:42.782 Das Verlieren oder Gestohlenwerden dieses Geräts ist im Alltag ziemlich häufig. 00:01:43.423 --> 00:01:53.327 Und wenn wir nicht auf die Sicherheit des Mobilgeräts achten, also wenn wir kein Anmeldeprotokoll verwenden, sei es ein Passwort, 00:01:53.387 --> 00:02:02.242 Face ID, also Gesichtserkennung, Iris-Erkennung oder Fingerabdruckerkennung, dann ist es sehr einfach für jemanden, auf die Daten in unserem Gerät zuzugreifen. 00:02:02.282 --> 00:02:03.184 Und ein weiterer Punkt ist, dass wir beim Datentransfer mit Mobilgeräten in der Regel unsichere Infrastrukturen verwenden. 00:02:05.259 --> 00:02:10.960 Damit meine ich zum Beispiel, wenn wir das Netzwerk der Universität nutzen, besteht die Möglichkeit, dass eine andere Person im selben Netzwerk der Universität Zugriff auf unsere Daten hat. 00:02:11.281 --> 00:02:20.403 Deshalb betone ich es noch einmal. 00:02:21.282 --> 00:02:23.564 Die Verwendung eines virtuellen privaten Netzwerks (VPN) trägt immer besonders während der Verbindung erheblich zur Sicherheit von Mobilgeräten bei. 00:02:24.444 --> 00:02:32.826 Passwort oder PIN verwenden. 00:02:36.769 --> 00:02:40.514 Besonders bei SIM-Karten ist dies eine grundlegende Funktion. 00:02:40.674 --> 00:02:45.139 Wir haben gesagt, dass jede SIM-Karte in Mobilgeräten eine persönliche Identifikationsnummer hat. 00:02:46.020 --> 00:02:49.405 Diese Nummer muss nach der ersten Verwendung geändert werden. 00:02:50.512 --> 00:03:01.095 Mit dieser Nummer meinen wir, dass wir unsere PIN, PUK und verschiedene Codes wie PUK2 verwenden werden, wenn wir die PIN verlieren. 00:03:01.575 --> 00:03:03.836 Diese Codes müssen von uns geändert werden. 00:03:03.895 --> 00:03:04.175 Warum? 00:03:04.716 --> 00:03:15.879 Weil es schwierig ist, sich an eine standardmäßige PIN zu erinnern, und wenn ein Code von einem Ort zum anderen übertragen wird, könnte ihn jemand unerwartet verwenden. 00:03:15.919 --> 00:03:18.340 Deshalb müssen wir einen geeigneten PIN-Code wählen und diesen ändern. 00:03:19.831 --> 00:03:25.073 Ein Gerät kann nur durch Eingabe der Identifikationsnummer wieder aktiviert werden, wenn es absichtlich ausgeschaltet wurde. 00:03:25.913 --> 00:03:30.716 Es ist nicht möglich, ein Gerät ohne Eingabe des PIN-Codes zu aktivieren. 00:03:30.776 --> 00:03:33.957 Dies gilt auch, wenn der Akku des Geräts vollständig entladen ist und das Gerät wieder aufgeladen wurde. 00:03:40.139 --> 00:03:52.386 Das bedeutet, dass wir den PIN-Code erneut eingeben müssen, wenn die Stromversorgung unseres Geräts, also der Akku, erschöpft ist und das Telefon ausgeschaltet wird. 00:03:55.850 --> 00:03:59.514 Was ist SSID in einem WLAN? 00:03:59.714 --> 00:04:05.320 SSID steht für Service Set Identifier, also Dienst-Set-Identifier. 00:04:06.755 --> 00:04:16.117 Kabellose Heimnetzwerke und Access Points werden als SSID bezeichnet, die dabei helfen, die Identität des Hotspot- oder Mobilfunkdatenzugriffsnetzwerks zu erkennen und sich damit zu verbinden. 00:04:16.897 --> 00:04:20.318 Mit anderen Worten, SSID ist der Name des Wi-Fi-Netzwerks. 00:04:21.138 --> 00:04:28.180 Die SSID kann maximal 32 Zeichen lang sein und wird vom Netzwerkbetreiber für das entsprechende drahtlose Netzwerk festgelegt. 00:04:29.260 --> 00:04:33.001 Eine SSID wird normalerweise am Zugangspunkt konfiguriert. 00:04:33.541 --> 00:04:35.522 Es ist auch möglich, die SSID zu ändern. 00:04:37.981 --> 00:04:43.164 Ich zeige Ihnen ein Beispiel, wo die SSID zu finden ist. 00:04:43.224 --> 00:04:56.451 Auf dem Aufkleber unter oder hinter Ihrem Modem finden Sie die Standard-Router-Einstellungen, d. h. IP und Benutzername, Passwort, die dieser SSID entsprechen. 00:04:56.571 --> 00:04:58.832 Außerdem werden wir jetzt auf die MAC-ID eingehen, die sich auf der linken Seite befindet. 00:05:06.988 --> 00:05:08.630 MAC-Adressen blockieren. 00:05:08.871 --> 00:05:09.690 Was bedeutet MAC? 00:05:09.891 --> 00:05:12.633 Media Access Control Adresse. 00:05:12.974 --> 00:05:16.656 Das bedeutet Adresse für die Medienzugriffskontrolle. 00:05:17.217 --> 00:05:26.844 Die MAC-Adresse ist eine eindeutige physische Adresse oder Hardware-Adresse, die in jedem Gerät vorhanden ist und mit anderen Geräten kommunizieren kann. 00:05:27.385 --> 00:05:29.226 Die IP-Adresse kann variieren. 00:05:29.686 --> 00:05:32.529 Das bedeutet, dass sich die Internetprotokolladresse ändern kann. 00:05:32.889 --> 00:05:35.451 Jedoch ist die MAC-Adresse eindeutig und unveränderlich. 00:05:35.791 --> 00:05:40.154 Es ist nicht möglich, die MAC-Adresse zu ändern, aber es ist möglich, sie zu blockieren. 00:05:40.154 --> 00:05:49.845 Die MAC-Adresse, die aus 48 Bit und 6 Oktetten besteht, denken Sie bei Oktetten an Octopus 8, also an einen achtarmigen Kraken. 00:05:49.845 --> 00:06:02.766 Die ersten 24 Bit der aus 6 achtförmigen Zahlen bestehenden MAC-Adresse, also 3 Oktette, zeigen den Hersteller an, die zweiten 24 Bit, also 3 Oktette, zeigen Informationen wie Hardwaremodell, 00:06:02.946 --> 00:06:05.067 Jahr, Herkunftsort usw. an. 00:06:06.147 --> 00:06:15.511 Während die IP-Adresse, also die Internetprotokolladresse, von allen Benutzern gesehen werden kann, wird die MAC-Adresse des Geräts nur von Benutzern im selben A-Netzwerk angezeigt. 00:06:16.411 --> 00:06:20.693 Wenn eine MAC-Adresse blockiert wird, wird das Gerät und der A-Eingang des Geräts blockiert. 00:06:23.635 --> 00:06:24.375 Daten-Backup. 00:06:24.876 --> 00:06:31.638 Datenverlust auf mobilen Geräten kann auch durch physische Zerstörung des Geräts oder des Speichermediums verursacht werden. 00:06:31.778 --> 00:06:35.220 Deshalb sollten diese Daten regelmäßig in eine andere Umgebung gesichert werden. 00:06:36.279 --> 00:06:38.942 Jedes Betriebssystem verfügt über ein Backup-System. 00:06:39.202 --> 00:06:42.223 Diese Backup-Services erfolgen über Cloud-Computing. 00:06:42.583 --> 00:06:44.484 Zum Beispiel iCloud und Google Drive. 00:06:46.624 --> 00:06:51.386 Es ist auch möglich, das Backup über ein physisches Gerät mit einem Kabel durchzuführen. 00:06:51.587 --> 00:06:55.108 Unser Beispiel für ein Mobilgerät und einen Desktop-Computer. 00:06:57.189 --> 00:07:03.112 Das Abschalten der drahtlosen Verbindung ermöglicht den Zugriff auf ein offenes VLAN oder Bluetooth-Gerät. 00:07:03.572 --> 00:07:08.355 Nach der Nutzung des VLANs oder Bluetooth sollte diese Funktion sofort deaktiviert werden. 00:07:09.724 --> 00:07:14.489 Dies trägt auch zur Energie- und Stromersparnis unseres Geräts bei. 00:07:15.510 --> 00:07:18.313 Sie sehen bereits auf dem Bild, wie wir das machen. 00:07:18.433 --> 00:07:27.782 Durch Berühren der Wi-Fi-Schaltfläche in den Einstellungen können wir sie grün, also aktiviert, oder grau, also deaktiviert, machen. 00:07:28.162 --> 00:07:33.467 Um dies zu tun, ziehen wir auf einem Google Android-Gerät das Kontrollzentrum vom oberen Bildschirmrand herunter. 00:07:34.667 --> 00:07:44.272 Bei Apple-Geräten wird das Kontrollzentrum hingegen von unten nach oben gezogen, um von unten nach oben zu gelangen, und von hier aus können wir Wi-Fi 00:07:44.332 --> 00:07:48.534 und Bluetooth aktivieren oder deaktivieren.

WEBVTT 00:00:02.685 --> 00:00:13.069 Yes friends, so far we have discussed how devices can connect to each other via a local network and Bluetooth, and how they can enter into a connection with each other. 00:00:13.129 --> 00:00:16.230 Now let's move on to the basic information for using mobile devices securely, so that we can ensure that both our personal data and data storage are not compromised while using the internet or a mobile device. 00:00:16.730 --> 00:00:26.133 Basic information about connections, mobile device security first, secondly password usage or PIN usage, third VLAN SSID usage, 00:00:26.193 --> 00:00:30.835 four blocking MAC addresses, five data backup, six turning off wireless connections, seven secure shopping sites and their usage. 00:00:43.524 --> 00:00:53.590 Under seven main headings, we will now discuss security and mobile device usage. 00:01:01.567 --> 00:01:09.994 Mobile device security serves the purpose of storing communication data on mobile devices such as laptops, tablets, cell phones, and smartphones, as well as sensitive information like internal company documents and money. 00:01:10.014 --> 00:01:12.876 And storing them means protecting this information. 00:01:15.118 --> 00:01:17.921 Due to their convenient sizes, these devices can be exposed to specific dangers. 00:01:23.675 --> 00:01:34.779 Because for example, when we think of a mobile phone, it's a device that we take everywhere, leave on the table, sometimes take into various buildings and institutions. 00:01:34.819 --> 00:01:36.180 It's a device that we deliver. 00:01:36.260 --> 00:01:42.782 The theft or loss of this device is a quite common occurrence in daily life. 00:01:43.423 --> 00:01:53.327 And if we are not careful about the security of our mobile device, meaning if we are not using an entry protocol while using our phone, it could be a password, 00:01:53.387 --> 00:02:02.242 face ID, iris recognition, fingerprint recognition, if we are not using something like this, it is very easy for someone to access the data on our device. 00:02:02.282 --> 00:02:03.184 And at another point, when transferring data with mobile devices, we generally use insecure infrastructures. 00:02:05.259 --> 00:02:10.960 And when I say this, for example, when using the university's network, there is a possibility that another person on the same network within the university can have access to our data. 00:02:20.423 --> 00:02:20.863 This is why I repeat. 00:02:21.282 --> 00:02:23.564 Using a Virtual Private Network (VPN) always provides a significant contribution to mobile device security, especially during connections. 00:02:24.444 --> 00:02:32.826 Using a VPN always provides a significant contribution to mobile device security, especially during connections. 00:02:34.044 --> 00:02:35.066 Using a password or pin. 00:02:36.769 --> 00:02:40.514 Especially in SIM cards, this is a fundamental feature. 00:02:40.674 --> 00:02:45.139 We mentioned that each SIM card in mobile devices has a unique personal identification number. 00:02:46.020 --> 00:02:49.405 This number needs to be changed after its initial use. 00:02:50.512 --> 00:03:01.095 By this number, we mean our pin code, our puk code, secondly, if we lose the pin, we will use the puk, or there are various codes like puk2. 00:03:01.575 --> 00:03:03.836 We need to change these codes ourselves. 00:03:03.895 --> 00:03:04.175 Why? 00:03:04.716 --> 00:03:15.879 Because it is difficult to remember a pin code that comes as a default, and also, if a code comes from one place to another, someone unexpected might be able to use that code. 00:03:15.919 --> 00:03:18.340 Therefore, we need to choose a suitable pin code for ourselves and change this pin code. 00:03:19.831 --> 00:03:25.073 If a device is intentionally shut down, it can only be reactivated by entering the identification number. 00:03:25.913 --> 00:03:30.716 It is not possible to activate a device without entering the pin code. 00:03:30.776 --> 00:03:33.957 This applies even if the device's battery is completely drained and the device has been recharged. 00:03:35.297 --> 00:03:39.959 So, when the power in our device, the battery, runs out and our phone shuts down, we need to enter the Pin number again when we turn it back on. 00:03:55.850 --> 00:03:59.514 What is SSID in VLAN, that is, in the wireless local area network? 00:03:59.714 --> 00:04:05.320 The name of SSID is Service Set Identifier, which means service set identifier. 00:04:06.755 --> 00:04:16.117 SSID is a name that helps identify and connect to the Hotspot, which is the cellular data access network, of wireless home networks and access points. 00:04:16.897 --> 00:04:20.318 In other words, SSID is the name of a Wi-Fi network. 00:04:21.138 --> 00:04:28.180 SSID can be up to 32 characters long and is assigned by the network operator for the respective wireless network. 00:04:29.260 --> 00:04:33.001 An SSID is usually set at the access point. 00:04:33.541 --> 00:04:35.522 It is also possible to change the SSID. 00:04:37.981 --> 00:04:43.164 I am showing you an example in the picture of where the SSID is located. 00:04:43.224 --> 00:04:56.451 Underneath or on the back of your modem, on the sticker, the Default Router Settings, which include the IP and username, password correspond to this SSID. 00:04:56.571 --> 00:04:58.832 We will now move on to the MAC ID in the other numbers on the left side. 00:05:06.988 --> 00:05:08.630 Blocking MAC addresses. 00:05:08.871 --> 00:05:09.690 What does MAC stand for? 00:05:09.891 --> 00:05:12.633 Media Access Control Address. 00:05:12.974 --> 00:05:16.656 In other words, media access control address. 00:05:17.217 --> 00:05:26.844 The MAC address is a unique physical address, also known as a hardware address, found on every device that can connect to other devices. 00:05:27.385 --> 00:05:29.226 IP addresses can vary. 00:05:29.686 --> 00:05:32.529 In other words, internet protocol addresses can vary. 00:05:32.889 --> 00:05:35.451 However, the MAC address is unique and unchangeable. 00:05:35.791 --> 00:05:40.154 It is not possible to change the MAC address, but it is possible to block it. 00:05:40.154 --> 00:05:49.845 The MAC address, consisting of 48 bits in 6 octets, think of an octopus with eight arms when we say octet. 00:05:49.845 --> 00:06:02.766 The first 24 bits of the MAC address, which consists of 6 groups of 8, represent the manufacturer, while the second 24 bits represent hardware model, 00:06:02.946 --> 00:06:05.067 year, place of manufacture, and similar information. 00:06:06.147 --> 00:06:15.511 While the IP address, the internet protocol address, is visible to all users, the device's MAC address is only visible to users connected to the same network. 00:06:16.411 --> 00:06:20.693 When a MAC address is blocked, that device and its network access are blocked. 00:06:23.635 --> 00:06:24.375 Data Backup. 00:06:24.876 --> 00:06:31.638 Data loss on mobile devices can also occur due to physical destruction of the device or storage medium. 00:06:31.778 --> 00:06:35.220 Therefore, this data should be regularly backed up to another environment. 00:06:36.279 --> 00:06:38.942 Every operating system has a backup system. 00:06:39.202 --> 00:06:42.223 These backup services are carried out through cloud computing. 00:06:42.583 --> 00:06:44.484 For example, iCloud and Google Drive. 00:06:46.624 --> 00:06:51.386 It is also possible to perform backups with a physical device via cable. 00:06:51.587 --> 00:06:55.108 Our sample mobile device and desktop computer. 00:06:57.189 --> 00:07:03.112 Disabling wireless connection provides the opportunity to access an open VLAN or Bluetooth device. 00:07:03.572 --> 00:07:08.355 After using VLAN or Bluetooth, this function should be immediately turned off. 00:07:09.724 --> 00:07:14.489 This also leads to power and electricity savings for our device. 00:07:15.510 --> 00:07:18.313 You can see how we do this in the picture. 00:07:18.433 --> 00:07:27.782 By touching the Wi-Fi button in the settings section, we can make it green, meaning on, or neutral, meaning off. 00:07:28.162 --> 00:07:33.467 To do this, in Google Android, we swipe down the Control panel from the top of the screen. 00:07:34.667 --> 00:07:44.272 In Apple devices, on the contrary, when we drag our finger from bottom to top, the control panel opens from the bottom to the top of the screen, and from there we can enable or disable Wi-Fi 00:07:44.332 --> 00:07:48.534 and Bluetooth.

WEBVTT 00:00:02.685 --> 00:00:13.069 Evet arkadaşlar şu ana kadar mobil cihazları birbiriyle bağlantılı bir şekilde kullanmayı bir alan ağı üzerinden ve bluetooth üzerinden cihazların nasıl 00:00:13.129 --> 00:00:16.230 birbiriyle bağlantı içerisine girebildiğini hep beraber ele aldık. 00:00:16.730 --> 00:00:26.133 Şimdi mobil cihazları güvenli bir şekilde kullanmak için temel bilgilere gelelim ki internet kullanırken veya bir mobil cihazı kullanırken hem kişisel 00:00:26.193 --> 00:00:30.835 verilerimizin hem de veri stoğumuzun tehdit altına girmemesini sağlayabiliriz. 00:00:33.297 --> 00:00:42.923 Bağlantılarıyla ilgili temel bilgiler, mobil cihaz güvenliği ilk olarak, ikincisi parola kullanımı yani PIN kullanımı, üç VLAN SSID kullanımı, 00:00:43.524 --> 00:00:53.590 dört MAC adreslerini engelleme, beş veri yedekleme, altı kablosuz bağlantının kapatılması, yedi senal alışveriş siteleri ve bunların kullanımı. 00:00:54.091 --> 00:00:59.094 Yedi tane ana başlık altında şimdi güvenliği, mobil cihaz kullanımını ele alacağız. 00:01:01.567 --> 00:01:09.994 Mobil cihaz güvenliği, dizüstü bilgisayarlar, tabletler, cep telefonları ve akıllı telefonlar gibi mobil cihazlardaki iletişim verilerinin dahili şirket 00:01:10.014 --> 00:01:12.876 belgeleri ve paralar gibi hassas bilgilerin saklanmasına yarar. 00:01:15.118 --> 00:01:17.921 Ve saklanırken bu bilgilerin korunması anlamına gelir. 00:01:18.181 --> 00:01:22.985 Kullanışlı boyutlara sahip olmasından dolayı bu cihazlar özel tehlikelere maruz kalabilmektedirler. 00:01:23.675 --> 00:01:34.779 Çünkü mesela bir mobil telefonu düşündüğümüzde, mobil telefon her yere götürdüğümüz, masaya bıraktığımız, bazen çeşitli binalara ve kurumlara girerken 00:01:34.819 --> 00:01:36.180 teslim ettiğimiz bir cihaz. 00:01:36.260 --> 00:01:42.782 Bu cihazın çalınması, kaybolması oldukça sık yaşanan bir durum gündelik hayatta. 00:01:43.423 --> 00:01:53.327 Ve eğer mobil cihaz güvenliğine dikkat etmiyorsak, yani telefonumuzu kullanırken bir giriş protokolü kullanmıyorsak bu bir şifre olabilir, 00:01:53.387 --> 00:02:02.242 face ID yani yüz tanıma olabilir, iris tanıma olabilir, parmak izi tanıma olabilir, böyle bir şey kullanmıyorsak cihazımızın içerisindeki verilere birinin 00:02:02.282 --> 00:02:03.184 ulaşması son derece kolaydır. 00:02:05.259 --> 00:02:10.960 Ve diğer bir noktada mobil cihazlarla veri aktarımı yaparken biz genelde güvenli olmayan alt yapıları kullanırız. 00:02:11.281 --> 00:02:20.403 Bundan kastettiğimiz şey mesela üniversitenin ağını kullanırken üniversitenin içerisinde aynı ağda bulunan başka bir kişinin bizim verilerimize sahip olabilme 00:02:20.423 --> 00:02:20.863 olasılığı da vardır. 00:02:21.282 --> 00:02:23.564 Bu sebeple tekrarlıyorum. 00:02:24.444 --> 00:02:32.826 Sanal özel VPN kullanmamız her zaman mobil cihaz güvenliğini özellikle bağlantı sırasında sağlarken bize ciddi bir katkı sağlar. 00:02:34.044 --> 00:02:35.066 Parola kullanıma pin. 00:02:36.769 --> 00:02:40.514 Özellikle SIM kartlarında bu temel bir özelliktir. 00:02:40.674 --> 00:02:45.139 Mobil cihazlarda bulunan her bir SIM kartının bir kişisel kimlik numarası mevcuttur demiştik. 00:02:46.020 --> 00:02:49.405 Bu numaranın ilk kullanım sonrasında değiştirilmesi gerekir. 00:02:50.512 --> 00:03:01.095 Bu numaradan kastettiğimiz şey pin kodumuzun, puk kodumuzun ikinci olarak pin'i kaybettik puku kullanacağız ya da işte puk2 gibi çeşitli kodlar var. 00:03:01.575 --> 00:03:03.836 Bu kodları bizim değiştirmemiz gerekmekte. 00:03:03.895 --> 00:03:04.175 Neden? 00:03:04.716 --> 00:03:15.879 Çünkü standart olarak gelen bir pin kodunun hem akılda tutulması zordur hem de aynı zamanda bir kod bir yerden başka bir yerden geliyorsa bu kodu hiç ummadığımız 00:03:15.919 --> 00:03:18.340 birinin bir şekilde kullanması mümkün olabilir. 00:03:19.831 --> 00:03:25.073 Bu sebeple kendimize uygun bir pin kodu seçmemiz ve bu pin kodunu değiştirmemiz gerekmektedir. 00:03:25.913 --> 00:03:30.716 Bir cihaz kasıtlı olarak kapatılırsa yalnızca kimlik numarası girilerek yeniden etkinleştirilebilir. 00:03:30.776 --> 00:03:33.957 Pin kodu girmeden bir cihazı etkinleştirmemiz mümkün değildir. 00:03:35.297 --> 00:03:39.959 Bu durum cihazın pili tamamen boşsa ve cihaz yeniden şarj edilmişse de geçerlidir. 00:03:40.139 --> 00:03:52.386 Yani cihazımızdaki güç yani pil bittiğinde ve telefonumuz kapandığında açtığımızda tekrar Pin numarası girmemize gerek vardır. 00:03:55.850 --> 00:03:59.514 VLAN'da yani kablosuz yerel alanağında SSID nedir? 00:03:59.714 --> 00:04:05.320 SSID'nin adı Service Set Identifier yani hizmet seti tanımlayıcısı. 00:04:06.755 --> 00:04:16.117 Kablosuz ev ağları ve bağlantı noktalarının Hotspot yani hücresel veri erişimi ağının kimliğini tanımaya ve giriş yapmaya yardımcı olan bir isimdir SSID. 00:04:16.897 --> 00:04:20.318 Bir diğer değişle SSID Wi-Fi ağının adıdır. 00:04:21.138 --> 00:04:28.180 SSID en fazla 32 karakter uzunluğunda olabilir ve ilgili kablosuz ağ için ağ operatörü tarafından atanır. 00:04:29.260 --> 00:04:33.001 Bir SSID genellikle erişim noktasında ayarlanmaktadır. 00:04:33.541 --> 00:04:35.522 SSID'yi değiştirmemiz de mümkündür. 00:04:37.981 --> 00:04:43.164 SSID'nin nerede bulunduğuna dair size resimde bir örnek gösteriyorum. 00:04:43.224 --> 00:04:56.451 Modeminizin altında veya arka tarafında bulunan stickerın üzerinde Default Router Settings yani varsayılan yönlendirici ayarlarında IP ve username, 00:04:56.571 --> 00:04:58.832 password bu SSID'ye denk gelir. 00:04:59.192 --> 00:05:04.035 Aynı zamanda sol tarafta bulunan diğer numaralarda MAC ID'ye de şimdi geleceğiz. 00:05:06.988 --> 00:05:08.630 MAC adreslerini engelleme. 00:05:08.871 --> 00:05:09.690 MAC ne demekti? 00:05:09.891 --> 00:05:12.633 Media Access Control Adres. 00:05:12.974 --> 00:05:16.656 Yani media erişim kontrolü adresi. 00:05:17.217 --> 00:05:26.844 MAC adresi diğer cihazlarla bağlantı kurabilen her aygıtta eşsiz olarak bulunan fiziksel adres ya da donanım adresi olarak da isimlendirilebilen bir adresdir. 00:05:27.385 --> 00:05:29.226 IP adresi değişiklik gösterebilir. 00:05:29.686 --> 00:05:32.529 Yani internet protokol adresi değişiklik gösterebilir. 00:05:32.889 --> 00:05:35.451 Ancak MAC adresi tektir ve değişmez. 00:05:35.791 --> 00:05:40.154 MAC adresini değiştirmemiz mümkün değil fakat engellememiz mümkündür. 00:05:40.154 --> 00:05:49.845 48 bit 6 octetten oluşan MAC adresi octetten kastettiğimiz şey octopus 8 yani ahtapot gibi düşünün sekiz kollu. 00:05:49.845 --> 00:06:02.766 6 tane 8'li sayı disi oluşan MAC adresinin ilk 24 biti yani 3 okteti üretici firmayı, ikinci 24 bit yani 3 oktet ise donanım modeli, 00:06:02.946 --> 00:06:05.067 yılı, üretim yeri gibi bilgileri gösterir. 00:06:06.147 --> 00:06:15.511 IP adresi yani internet protokol adresi tüm kullanıcılar tarafından görülebilirken, cihazın MAC adresi yalnızca aynı A bağlı alan kullanıcılar tarafından görüntülenir. 00:06:16.411 --> 00:06:20.693 Bir MAC adresi engellendiğinde o cihaz ve cihazın A girişi bloklanır. 00:06:23.635 --> 00:06:24.375 Veri Yedekleme. 00:06:24.876 --> 00:06:31.638 Mobil cihazlardaki veri kaybı, cihazın veya depolama ortamını fiziksel olarak yok edilmesinden de kaynaklanabilmektedir. 00:06:31.778 --> 00:06:35.220 Bu nedenle bu verilerde düzenli olarak başka bir ortama kaydedilmelidir. 00:06:36.279 --> 00:06:38.942 Her işletim sisteminin bir yedekleme sistemi bulunur. 00:06:39.202 --> 00:06:42.223 Bu yedekleme hizmetleri bulut bileşim aracılığıyla gerçekleşir. 00:06:42.583 --> 00:06:44.484 Örneğin iCloud ve Google Drive. 00:06:46.624 --> 00:06:51.386 Yedeklemeyi kablo aracılığıyla fiziksel bir cihaz ile gerçekleştirmek de mümkündür. 00:06:51.587 --> 00:06:55.108 Örnek mobil cihaz ve masa üstü bilgisayarımız. 00:06:57.189 --> 00:07:03.112 Kablosuz bağlantının kapatılması açık olan bir VLAN veya Bluetooth cihaza erişme fırsatı vermektedir. 00:07:03.572 --> 00:07:08.355 VLAN veya Bluetooth kullanımını bitirdikten sonra bu işlev derhal kapatılmalıdır. 00:07:09.724 --> 00:07:14.489 Bu aynı zamanda cihazımızın güç ve elektrik tasarrufu sağlamasına da yol açar. 00:07:15.510 --> 00:07:18.313 Bunu nasıl yaptığımıza dair resimde görüyorsunuz zaten. 00:07:18.433 --> 00:07:27.782 Ayarlar kısmındaki Wi-Fi butonunu dokunarak işte yeşil yani açık veya nötrü yani kapalı hale getirebiliriz. 00:07:28.162 --> 00:07:33.467 Bunu yapmak için Google Android'de ekranın üst kısmından Kontrol panelini kaydırıyoruz. 00:07:34.667 --> 00:07:44.272 Apple cihazlarda ise tam tersi olarak aşağıdan yukarıya parmağımızı sürüklediğimizde ekranın en altından en üstüne kontrol paneli açılır ve buradan Wi-Fi 00:07:44.332 --> 00:07:48.534 ve Bluetooth'u etkin hale getirmemiz veya kapatmamız mümkündür.