Ssl server probably obsolete chrome

Problem: Chrome and Firefox recently updated and suddenly stopped allowing connections to your SMP3 Admin and possibly your applications and is giving you the error Server has a weak ephemeral Diffie-Hellman public keyThis is an attempt by the browsers to protect you from connecting to a Server that is using outdated cipher settings which could lead to a recently published SSL vulnerability "logjam".The ciphers being used by SMP3 SP08 and prior server versions are defaulting to obsolete choices. I believe this is being updated for the SMP3 SP09 release. However, in the meantime you can make a similar change to your server to update the ciphers using the following procedure.The quickest fix is to just remove the TLS_DHE_RSA_WITH_AES_128_CBC_SHA from the default cihpers list. This removes the one google is complaining about. You can also just update the ciphers as indicated below to add support for some of the newer cihphers. This won't hurt anything but I also don't know which ones are actually used or support by the browsers.Solution:Stop the SMP3 serverEdit the Server\confg_master\org.eclipse.gemini.web.tomcat\default-server.xml fileFind the ciphers line in each of the following Connector tags and replace the value with the ciphers below.Connector smpConnectorName="oneWaySSL"Connector smpConnectorName="AdminSSL"Connector smpConnectorName="mutualSSL"ciphers="TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA"Save and restart the SMP3 server. Now connections from Chrome and Firefox should no longer give that error.The key is to remove the TLS_DHE_* ciphers. This list contains probably more options that you will need but I leave it to you to determine which ones you want to support.For Agentry clients be sure to test each device you will be using BEFORE making this change in production. If your device does not support the newer ciphers it will probably fail to connect and you may need to either update your device or re-implement the obsolete cipher.

Travel, or for those who don’t have access to a reliable internet connection. How does a VPN work? So how does a VPN protect you? Let's look under the hood and see how things work. Protocol name Encryption Routing Use Case OpenVPN 256-bit AES encryption using OpenSSL TCP and UDP, SSL/TSL Best overall use SSTP 256-bit AES encryption TCP, SSL/TSL Best option for Windows IKEv2 / IPSec 256-bit AES encryption UDP Best option for mobile browsing L2TP / IPSec 256-bit AES encryption UDP Best option for basic setup PPTP 128-bit encryption TCP None; obsolete WireGuard 256-bit AES encryption UDP Best option for early adopters When an attempted connection is made to the VPN provider's remote server, the server authenticates the user and creates an encrypted tunnel for their data to run through. The data that funnels through this tunnel gets scrambled into code and rendered illegible by anyone who does not have access to the encryption key, and therefore does not have permission to read it. Once this data reaches the server, the server uses its own private key to decrypt the data and make it readable. The server sends the decrypted data, along with a new IP address, back to the site you’re attempting to connect with. How this encryption process occurs—and whether it's fully secure—depends on the type of protocol, or system of instructions, used to make the connection. A VPN service can only guarantee security and peace of mind when backed by a strong protocol. It's the

For the futureIf current technological processing development follows Moore's Law or the leap to quantum computing is made at a large scale, many cryptographic algorithms and best practices will be overcome and made obsolete. This will expose anything the encryption is protecting and could put legacy data in danger. Many experts have raised concerns that individuals and nations around the world are collecting data with the goal in mind of decrypting it at a later date when the processing makes it trivial.PFS prevents this strategy as an option altogether. It does not transmit any of its session keys over the network, instead, PFS uses symmetric encryption methods that generate session keys independently through complex authentication equations performed by both sides.Another option to help prevent this issue is the utilization of quantum cryptography, a developing field. How to achieve perfect forward secrecyEnabling PFS support on a server is simple, and most modern servers are already configured for it. If not, you can generally do so in four straightforward steps:Go to the SSL protocol configurationAdd the SSL protocolsSet an SSL cipher that’s compatible with PFSRestart your serverPerfect forward secrecy can be accomplished on most web servers including Apache, Nginx, RSA, and others.

Berlaku SSL/TLS dan perlu tidaknya diperbarui.Berikut contoh laporan SSL untuk website Hosteko yang dibuat menggunakan tool SSL Labs :2. Mengaktifkan dukungan TLS 1.3Sebagai lapisan keamanan terbaru dari teknologi SSL, TSL (Transport Layer Security) membuat koneksi yang aman antara browser dan server web. Jika fitur ini dimatikan, browser akan menolak sertifikat dari beberapa website. Inilah yang kemudian menyebabkan munculnya sejumlah masalah.Untungnya, sebagian besar browser modern, seperti Google Chrome, sudah dilengkapi dengan TLS 1.3 secara default.Hanya saja, jika Chrome yang dimiliki masih versi lama, Anda harus mengikuti langkah berikut untuk mengaktifkan dukungan TLS browser :Buka Google ChromeKetika chrome://flags di kolom URL Chrome, lalu tekan EnterCari TLSAktifkan (Enable) dukungan TLS 1.3Sayangnya, opsi ini tidak tersedia di versi baru Google Chrome.Misalnya, jika Anda menerapkan keempat langkah di atas di Chrome versi 80.0.3987.1222, opsi yang didapat hanyalah TLS 1.3 downgrade hardening. Fungsinya untuk “memperkuat” koneksi TLS 1.3 dan memperbolehkan downgrade di versi TLS yang lebih lama (atur ke default).3. Menonaktifkan protokol QUICProtokol QUIC (Quick UDP Internet Connections) adalah proyek eksperimen Google yang bisa mengirim package sederhana menggunakan User Datagram protocol (UDP) tanpa memerlukan koneksi.Meskipun QUIC dikenal sebagai alternatif terbaik dari layanan keamanan lain, seperti TCP, HTTP/2, dan TLS/SSL, protokol ini terkadang memicu peringatan konten campuran, termasuk ERR_SSL_VERSION_OR_CIPHER_MISMATCH.Oleh karena itu, Anda harus mematikannya untuk mengatasi masalah koneksi sertifikat SSL. Berikut langkah-langkahnya (via Google Chrome) :Buka Chrome dan ketik chrome://flags di kolom URL, lalu tekan Enter.Anda akan diarahkan ke halaman fitur experimental. Cari QUIC.Atur Experimental QUIC Protocol ke opsi Disable.Selesai!Cara lain untuk mematikan protokol QUIC adalah dengan menggunakan Application Control atau Firewall Policy. Namun, karena penggunaan kedua metode ini menuntut Anda untuk paham hal-hal teknis, kami tidak merekomendasikannya.4. Menghapus web history/cacheWeb history dan web cache akan menyimpan data situs yang diakses melalui browser. Data ini bisa berupa teks, gambar, atau file. Mengaktifkan cache berarti mempercepat akses buka halaman web.Sayangnya, data yang tersimpan cenderung data statis dan lama. Apalagi kalau situs sudah melakukan beberapa perubahan, data yang ada tidak sesuai. Cache yang tak kunjung dihapus dapat mengakibatkan error pada SSL dan risiko keamanan jangka panjang.Menghapus cache di perangkat dan memulai kembali browser akan jadi solusi terbaik untuk mengatasi ERR_SSL_VERSION_OR_CIPHER_MISMATCH.Apabila cara ini tidak juga menghilangkan error, bersihkan SSL State di browser.Berikut langkah-langkahnya (untuk Google Chrome versi 80.0.3987.122) :Arahkan kursor ke sudut kanan layar atas Chrome, klik 3 tanda titik, dan pilih Settings.Scroll ke bawah ke area Settings dan cari lalu klik opsi Advanced.Klik Open Proxy Settings. Kotak dialog Internet