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168 articles dans cette catégorie

Blog

How RIR Policy Differences Shape IPv4 Transactions Across Regions

Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different transaction preparation. The reason is that an IPv4 transaction does not exist only at the commercial layer. The address block is also registered within a Regional Internet Registry framework, and the applicable policies can affect whether the resource is currently transferable, what the recipient must prepare, which records needRead more Related Posts How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different What Is CGNAT (Carrier-Grade NAT)? Why It Breaks Hosting, Gaming, and Inbound Services CGNAT (Carrier-Grade NAT) is a technique that lets an Internet service provider share a single public IPv4 address among many RPKI and ROA Explained: How Route Origin Authorization Protects Your IPv4 Prefixes RPKI (Resource Public Key Infrastructure) is a security framework that lets IP address holders publish cryptographically signed statements about who .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

17 août 2026Lire la suite →

Blog

Proxy vs VPN: What’s the Difference and Which Do You Need?

A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of a device’s traffic through a secure tunnel. The short version: a proxy changes the apparent source of some of your traffic; a VPN changes and protects the source of all of it. That difference in scope and encryption is the core of the comparison, and it usually points clearlyRead more Related Posts How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of What Is CGNAT (Carrier-Grade NAT)? Why It Breaks Hosting, Gaming, and Inbound Services CGNAT (Carrier-Grade NAT) is a technique that lets an Internet service provider share a single public IPv4 address among many .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

16 août 2026Lire la suite →

Blog

What Is CGNAT (Carrier-Grade NAT)? Why It Breaks Hosting, Gaming, and Inbound Services

CGNAT (Carrier-Grade NAT) is a technique that lets an Internet service provider share a single public IPv4 address among many customers at once, instead of giving each customer their own. It adds a second layer of network address translation inside the provider’s network, so hundreds or thousands of subscribers sit behind one public address that the outside Internet sees. For ordinary browsing, streaming, and app use, CGNAT usually worksRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

15 août 2026Lire la suite →

RPKI (Resource Public Key Infrastructure)

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RPKI and ROA Explained: How Route Origin Authorization Protects Your IPv4 Prefixes

RPKI (Resource Public Key Infrastructure) is a security framework that lets IP address holders publish cryptographically signed statements about who is allowed to announce their address space in BGP. A ROA (Route Origin Authorization) is that signed statement — it names the prefix, the ASN authorized to originate it, and how specific the announcement may be. Together they give the world’s routers a way to reject false announcements aboutRead more Related Posts How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of What Is CGNAT (Carrier-Grade NAT)? Why It Breaks Hosting, Gaming, and Inbound Services CGNAT (Carrier-Grade NAT) is a technique that lets an Internet service provider share a single public IPv4 address among many .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

14 août 2026Lire la suite →

Blog

What Is IP Spoofing? How Forged Source Addresses Work and How Networks Defend Against Them

IP spoofing is the practice of sending Internet traffic with a forged source IP address, making packets appear to come from a different machine than the one that actually sent them. It exploits a foundational design fact of the Internet Protocol: routers forward packets based on the destination address and generally do not verify that the source address is genuine. Spoofing matters to businesses for two distinct reasons. First, Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

13 août 2026Lire la suite →

Blog

What Is BGP Hijacking? How Route Hijacks Work, Famous Incidents, and How Networks Prevent Them

BGP hijacking is the illegitimate takeover of traffic destined for IP address space, carried out by announcing routes for prefixes the announcer is not authorized to originate. Also called prefix hijacking, route hijacking, or IP hijacking, it corrupts the Internet’s routing tables themselves: networks around the world are told that the wrong party can deliver traffic for an address block, and they believe it. This makes hijacking fundamentally differentRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

12 août 2026Lire la suite →

Blog

Which RIRs Support Inter-RIR IPv4 Transfers in 2026?

IPv4 addresses may be globally routable, but transferring their registration from one organization to another is governed by Regional Internet Registry (RIR) policy. For organizations buying or selling IPv4 address space internationally, this creates an important question: Which RIRs support inter-RIR IPv4 transfers in 2026? As of August 2026, ARIN, RIPE NCC, APNIC, and LACNIC have established frameworks for inter-RIR IPv4 transfers, subject to compatibility between the RIRs andRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

11 août 2026Lire la suite →

Blog

What Is Reverse DNS (rDNS)? Why PTR Records Matter for Email, Hosting, and Leased IPv4

Reverse DNS (rDNS) is the process of resolving an IP address back to a domain name. It is the mirror image of the DNS lookups most people know: forward DNS translates a name like mail.example.com into an IP address, while reverse DNS translates an IP address back into a name. The record type that stores this answer is called a PTR record. For most of the Internet’s history, reverseRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

10 août 2026Lire la suite →

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What Is BGP? How Border Gateway Protocol Turns IP Addresses into Reachable Services

BGP (Border Gateway Protocol) is the routing protocol that connects independent networks across the Internet. It allows networks to announce which IP address blocks they can reach, and it lets every other network decide how to send traffic toward those blocks. Without BGP, an IPv4 address can be registered, allocated, or leased — but no one on the Internet would know how to reach it. For businesses, this distinctionRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

9 août 2026Lire la suite →

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How DDoS Mitigation Works: Scrubbing, BGP Diversion, Anycast, and What Network Operators Should Prepare

DDoS mitigation is the set of techniques used to keep services online during a distributed denial-of-service attack — by absorbing, diverting, filtering, or discarding attack traffic before it overwhelms the target. Detection tells you an attack is happening; mitigation is what keeps customers connected while it does. Most explanations of DDoS focus on the attack side: the types, the botnets, the traffic volumes. We cover that ground in ourRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

8 août 2026Lire la suite →

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IPv4 Planning for AI Infrastructure and GPU Cloud Providers

IPv4 Planning for AI Infrastructure and GPU Cloud Providers AI infrastructure planning often begins with GPUs. Operators compare accelerator models, cluster size, power density, cooling, storage throughput, interconnect performance, and data-center capacity. These decisions are essential, but they do not complete the infrastructure plan. A GPU cloud also needs a reliable addressing strategy. Customers must reach inference APIs, training environments, management portals, gateways, storage services, observability platforms, VPN endpoints, Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

4 août 2026Lire la suite →

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How to Prevent IPv4 Hijacking During a Transfer: 10 Security Steps

Transferring IPv4 address space is not only a commercial and registry process. It is also a sensitive routing operation. During an IPv4 transfer, control of a prefix moves from one organization to another. Registry records, Route Origin Authorizations, Internet Routing Registry objects, upstream-provider filters, reverse DNS settings, and live BGP announcements may all need to change. When these changes are completed in the wrong order—or when identity and authorizationRead more Related Posts 什么是 CGNAT（运营商级 NAT）？它为何会影响主机托管、游戏和入站服务？ CGNAT（Carrier-Grade NAT，运营商级网络地址转换）是一种技术，它允许互联网服务提供商让多个客户同时共享同一个公共 IPv4 地址，而不是为每位客户单独分配一个公共 IPv4 地址。它会在服务提供商的网络内部增加第二层网络地址转换，因此数百甚至数千名用户都位于同一个公共地址之后，而外部互联网看到的只是这个共享的公共地址。对于日常网页浏览、流媒体播放和应用程序使用来说，CGNAT 通常不会被用户察觉。问题会在外部网络需要主动连接到你时出现，例如托管服务器、进行端口转发、运行游戏服务器、接收 VoIP 或 VPN 连接，或启用远程访问。由于你不再拥有属于自己的公共地址——而是与其他陌生用户共享同一个地址——传入连接无法明确知道应该被转发到哪一个用户，因此这些服务可能无法正常工作或变得不稳定。CGNAT 并不是程序错误或配置错误。它是针对一个结构性现实而采取的有意解决方案：全球 IPv4 地址已经不足，而互联网服务提供商仍需要在公共地址数量有限的情况下继续连接新的客户。这使 CGNAT 成为普通用户最容易接触到的一个明显迹象，说明公共 IPv4 地址是一种有限且竞争激烈的资源；同时也清楚说明了为什么运行对外服务的企业需要拥有自己的专用公共地址空间。本文将介绍什么是 CGNAT、它如何运作、具体会影响哪些功能、如何判断自己是否处于 How RIR Policy Differences Shape IPv4 Transactions Across Regions Two IPv4 blocks can have the same prefix size, similar market value, and equally willing buyers and sellers—yet require different Proxy vs VPN: What’s the Difference and Which Do You Need? A proxy reroutes traffic for a specific application through an intermediary server, while a VPN routes and encrypts all of .related-post {} .related-post .post-list { text-align: left; } .related-post .post-list .item { margin: 5px; padding: 10px; } .related-post .headline { font-size: 18px !important; color: #999999 !important; } .related-post .post-list .item .post_thumb { max-height: 220px; margin: 10px 0px; padding: 0px; display: block; } .related-post .post-list .item .post_title { font-size: 16px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } .related-post .post-list .item .post_excerpt { font-size: 13px; color: #3f3f3f; margin: 10px 0px; padding: 0px; display: block; text-decoration: none; } @media only screen and (min-width: 1024px) { .related-post .post-list .item { width: 30%; } } @media only screen and (min-width: 768px) and (max-width: 1023px) { .related-post .post-list .item { width: 90%; } } @media only screen and (min-width: 0px) and (max-width: 767px) { .related-post .post-list .item { width: 90%; } }

28 juil. 2026Lire la suite →

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