Categories
Guide

Protected: NAT小鸡v2.0食用教程

This content is password protected. To view it please enter your password below:

Categories
Networking

The official Telegram CIDR list

If for whatever reason you have the need to reroute or block Telegram Messenger traffic, at some point, you would have come across an ASN list with a list of /22 IPv4 blocks and one or two /48 IPv6 blocks. If you’ve hastily based your firewall rules on that list, you’ll notice it works only intermittently. That’s because the list is incomplete. JTT got you covered and you have come to the right place! Below are the known CIDR used by the Telegram Messenger service:

Categories
VPS 科普

如何使用共享IP虚拟主机而不失霸气

由于不可描述的原因并根据站长非正式统计,中国是现时云主机个人均拥有量最高的地区,没有之一。伴随这庞大需求而来的是各路厂商对成本的最大优化而衍生的各类阉割版主机,务求以低价与薄利多销的策略来吸引消费者。而对个人使用的低阶主机产品而言,已经属于稀缺资源的公网 IPv4 就占了成本的一大部分(本文的 IP 都是泛指 v4,后略)。于是市面上出现了各种各样的共享公网 IP 或 NAT 主机租赁服务。

Categories
VPS 科普

Azure 乞丐版 B1ls 的正确食用姿势 —— 压榨极致性能

最近与几个大佬闲聊之际,发现很多人都在不约而同地吐槽 Azure 的效能。综合的来的意见不外乎是云盘 I/O 过慢(HDD/SDD 一样卡)、主机响应迟钝没反应、运行更新耗时大半天,期间 CPU 效能满载或时处于半宕机状态等等糟心体验,还贵。贵,是毋庸置疑的,毕竟产品品牌定位就是高端货,不可能做到灵车的价格。但我想说的是很多时候产品本身并无问题,只是食用姿势不对。

Categories
VPS

Adding Swap Space in Linux

Swap in Linux is the equivalent of virtual memory in Windows – a space on a disk that is used when the system runs out of RAM. For some reason unknown, many cloud instances are deployed without any swap.

Categories
Software VPS

Apt update slow? Try this fix

On a cloud instance with a slow disk, running the dreaded apt update && apt upgrade could take an eternity. But what if I tell you it may actually not be a disk IOPS issue?

Categories
Software

Enable Hyper-V Integration Services for your Ubuntu guest VMs

For some legacy reasons, my main hypervisor has been Hyper-V running on a Windows Server. And contrary to popular belief, Linux actually supports Secure Boot and UEFI boot pretty well, and so you can create Generation 2 VM that runs Linux OS just fine. However, after installing the OS, you might have noticed that Hyper-V doesn’t talk to the guest VM very well – features such as shutdown or reset do not work. That is because the Linux kernel does not include Hyper-V drivers and agents. This is akin to VMware’s vmtools for the ESXi platform.

Categories
Free stuff Programming

A good font for coding

The folks over at JetBrains have provided a free programming font family, dubbed JetBrains Mono. It is open source and is highly optimized for coding, console sessions and configuration file editing views. Personally, I find it to be more legible than Google’s Source Code Pro or Ubuntu Mono. It is now my default monospaced font, but your mileage may vary.

Categories
VPS

Google Cloud DNS will serve randomized records from 27 Mar 2020

Currently, Cloud DNS name servers return resource record sets in the order in which they were defined.

In alignment with DNS industry practices, Cloud DNS name servers will begin randomizing the order of the resource record sets starting on March 27, 2020. This will apply to both public and private Cloud DNS zones.

Categories
Audio & Visual Gadget

SHIELD Experience Upgrade 8.0.2 now available

CNY present from Nvidia