shell - 外网SSH通过非22端口进入内网，请问有没有可能通过使用避免暴露端口?

问题是这样，想提供SSH访问，但IP不够多，所以采用端口映射，把一个IP的一个端口段都映射出去，但用户通过终端登录就必须加上端口号,像大家都知道的那样，这样会暴露端口： {代码...} 那么请允许我贪心一点，能不...

仅有的幸福 2017-04-26 09:01:24 0  3  682

Why can't text in HTML programs be displayed horizontally and centered?

I'm currently trying to code my own Snake game and would like the title and actual game image to be in the center of the website. After I tried to insert the button to restart the game, everything broke down. Even if I try to undo all the changes, I can't seem to get the text to center. Additionally...

P粉974462439 2023-08-15 12:00:42 0  1  545

redis - windows下提高php mysql执行效率

开源cms，因为要采集所以只能用win2003 windows执行php确实比linux不如 独立服务器 16核 24G内存 用什么加速web呢？ 目前打算用xcache 还有更好的办法吗

世界只因有你 2017-04-25 09:03:56 0  0  673

What is the essential difference between hyper-converged servers and cloud servers?

1. There are three main categories of cloud computing: private cloud, public cloud, and hybrid cloud; there are three main levels of cloud computing services: IAAS, PAAS, and SAAS. 2. The IaaS layer is the core and most basic part of the private cloud, and it is also the first part that enterprise I...

七秒 2021-10-27 09:41:40 0  2  2438

After writing the python module, how to write the documentation?

I'm a newbie and have never published a python program before. Recently, the teacher asked me to write two small python modules, one is to convert pdf to txt, and the other is to calculate the similarity of the converted txt document. I have written it and know how to package it into a third-party l...

黄舟 2017-05-24 11:35:07 0  3  644

Experience sharing: Teach you step by step how to record teaching videos? (Tools)

Many times, I want to record my experience into a video and share it with everyone, but don’t know how to do it? After reading this article, you will no longer be confused~~ First: What kind of computer should I choose? To be precise, what kind of platform should I choose? Windows? Or MacOS? For new...

天蓬老师 2017-11-07 14:50:43 13  22  7165

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't wo...

P粉178132828 2023-09-05 11:18:47 0  1  832

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactNam...

P粉237125700 2023-09-05 14:46:42 0  1  730

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: ...

P粉212114661 2023-09-05 15:18:28 0  1  623

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

P粉076987386 2023-09-05 15:06:32 0  1  587

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in...

P粉369196603 2023-09-05 15:34:44 0  1  1010

How to get average of DATETIME column in MySQL while grouping by other columns

I'm creating and populating a MySQL table using the following query: SETtime_zone='+00:00';CREATETABLEtimestamp_n_datetime(idINT,timeDATETIME,avg_timeDATETIME);INSERTINTOtimestamp_n_datetime(id,time,avg_time)VALUES("1","2023-01-0310:

P粉460377540 2023-09-05 11:46:21 0  1  510

Multi-device (mobile phone) synchronization - React Native

I'm trying to create a Lightshow that will launch on all users' mobile devices at the same time (can have up to 2000-3000 users). All users will use the Internet (Wi-Fi or mobile data). In our FE we use Apollo for subscriptions and it works like a charm. But the problem is, user A can get subscribed...

P粉151466081 2023-09-05 11:58:38 0  1  701

Spades, Diamonds, Hearts, Clubs => styles do not change font color in Chrome for Android

In Google Chrome on Windows, the card suit symbols (spades, hearts, diamonds, clubs) are colored correctly using the "style" attribute. Unfortunately, the same page displayed in Google Chrome on Android does not display the colors I defined but uses the default black and red. (See the atta...

P粉896751037 2023-09-05 15:25:13 0  1  762

How to hide mui TextField label?

I'm developing a Nextjs app and I have a dashboard navigation bar built with mui that contains a notification that opens the notification box, which is built with regular HTML and CSS. dashboard-navbar.js: importNotificationBoxfrom"./notification-box/notification-box";//...exportconstDashb...

P粉239164234 2023-09-05 15:41:00 0  1  690

Custom Bootstrap 5 carousel on mobile (multiple items, but not in one row)

I'm having trouble trying to customize the carousel layout on mobile devices. I want it to show every item of the carousel on mobile instead of just one, but after trying with some CSS and JS, especially using displayfloat or max-witdh I'm just starting to think this isn't possible, Or I don't know ...

P粉763662390 2023-09-05 11:53:56 0  1  599

How to use Firebase Authentication with multiple login methods and role-based authentication?

I am creating a react.js application with nodejs as backend and I want to use these authentication methods to login using email/password, login using google and login using phone, now I want to keep the uniqueness of the user while signing the user's name for Any of these, I will also get other deta...

P粉574695215 2023-09-05 12:18:10 0  1  661