webmail slb

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Postfix-webmail installation, postfix-webmail

Postfix-webmail installation, postfix-webmail Extmail is a WebMail program with powerful functions. This article introduces a more user-friendly WebMail program roundcube. 1. Download and install roundcube cd /server/tools/wget http://jaist.dl.sourceforge.net/project/roundcubemail/roundcubemail/1.1.4/roundcubemail-1.1.

How to define SLB

If you have a Aliyun account and you have purchased at least 2 cloud servers, you can create a SLB service and manage it using the Aliyun console. First, give your load-balancing service a name so that you can identify the difference between it and other load-balancing services. You also need to configure the ports and protocols that are used for the load balancing service to ensure that external traffic can be forwarded from the load Balancing servic

HSRP-SLB-VRRP-GLBP

Link redundancy: HSRP-SLB-VRRP-GLBP1. HSRP introduction and related configuration 1) HSRP IntroductionHot Standby Routing Protocol is a simple principle, similar to a server HA cluster,Two or more routers are configured as clusters in the same way to create a single virtual router,Then the Client points the gateway to the vro.At last, HSRP determines which router acts as the real default gateway. Specifically, HRSP is used to prevent the failure of th

Configuring SSL on Enterprise Manager and the SLB (Release 12.1.0.2 and later)

from:http://docs.oracle.com/html/e24089_42/ha_setup.htm#sthref833If The SLB is configured-Third-party/custom SSL certificates, you must ensure the CA certificates is properly Configured in order for the trust relationship to be maintained between the Agent, SLB, and the OMS. Specifically, the following must is carried out: Import the CA certificates of the SLB

SLB Configuration Health Check/session retention

You have now defined the name, service agreement, and service port number of a SLB instance. The next step is to configure the health check and session retention. The entire load-balancing service will run automatically according to your configuration and perform a health check on the cloud server as a load-balanced service. If a cloud server fails, it automatically removes the cloud server from your load-balancing service, and when the cloud server r

SLB Product features of cloud server

SLB Service is designed for Aliyun flexible computing platform, regardless of the system architecture, system security and performance, expansion, compatibility design has fully considered the flexible computing platform cloud server usage characteristics and specific business scenarios, the user's cloud server without special settings that can be transparent access. The Aliyun SLB Service can check the he

Ali Cloud due to SLB caused by the slow HTTPS access speed problem

Since we've deployed HTTPS on the Aliyun SLB (see the problems and solutions for deploying HTTPS on SLB), we have friends who have a lot of feedback for us to log in slowly at logon (accessed via HTTPS), and some friends can't even access the login page. When we log on ourselves, we have never experienced the problem of slow logon speed. Before yesterday, we suspected that the networks used by these frien

How to manage your SLB service

1. In the SLB console, you can see each SLB service created by yourself; 2, you can choose "Bulk Delete" or "manage" your SLB service, when you choose "Delete", will pop up the corresponding confirmation window for two times confirmation; 3, when you choose for a SLB instance of "Management", will enter

Ali Cloud SLB failure caused by the Web site is not normal access

August 22, 2013 23:50~23:58 around, due to Aliyun SLB (load Balancing) failure caused the site can not be normal access, to bring trouble to everyone, hope everyone understanding! August 19, we received Aliyun SMS notification: Dear Aliyun Users: Hello! Load Balancing (SLB) will be maintained on August 22 from 22:00 to 23rd 00:00, and the SLB service cannot b

Cloud Server SLB Initial use

SLB is the server load balancer (load Balancing) abbreviation, is a Network Load Balancing service provided by Ali Cloud computing. The SLB service, by setting the virtual service address (IP), will virtualize multiple cloud server resources in the same computer room (Region) into a high-performance, highly available application service pool, and distribute network requests from clients to the cloud service

Use SLB to get real IP after Nginx and Apache

The premise is that the "Get real IP" feature is turned on in the SLB setting. If only need to get real IP in the program, so long as in the program to get the value of http_x_forwarded_for is basically OK, do not need the following operation. The following operations can be implemented Nginx or Apache log records of the user real IP or in Apache, nginx prohibit certain IP users access. Nginx Nginx as SLB

The dangers of SLB's legs

In my life, it seems that the legs are nothing more common. When I nest in a chair, I get used to turning my legs up. SLB's legs make some people feel comfortable, and take SLB's legs as an elegant posture. However, the experts raised a wake-up remark about this we are used to: the SLB may cause the next generation of disasters and may cause multiple diseases. To this end, the United States also launched a special campaign to require women to "stop

SLB How to add a cloud server

We will make a list of cloud servers that are currently running in your name and can use the SLB service for your choice. Depending on your needs, you can add cloud servers to the SLB server pool and set the forwarding weights for a single cloud server, and the load Balancing service distributes traffic to different cloud servers based on the weights you set. Add multiple Cloud Servers 1, select the cloud

Opensource slb lvs error diagnosis case column analysis-PHP Tutorial

Open-source server load balancer LVS random auto-start exception diagnosis case column analysis. Open-source slb lvs random self-launch exception diagnosis case analysis in response to national calls, advocate the security, autonomy and controllability of IT information system hardware and software facilities, our company is also focusing on the analysis of open-source server load balancer LVS random auto-start exception diagnosis case columns In resp

Test the kernel-based and non-SLB protocols

UTC Jan 1 2014)Send lifetime (00:00:00 UTC Jan 1 2013)-(00:00:10 UTC Jan 1 2014)R1 # sh key chainKey-chain Cisco:Key 1 -- text "ccna"Accept lifetime (00:00:00 UTC Jan 1 2011)-(00:00:10 UTC Jan 1 2012)Send lifetime (00:00:00 UTC Jan 1 2011)-(00:00:10 UTC Jan 1 2012)Key 2 -- text "ccnp"Accept lifetime (00:00:00 UTC Jan 1 2012)-(00:00:10 UTC Jan 1 2013) [valid now]Send lifetime (00:00:00 UTC Jan 1 2012)-(00:00:10 UTC Jan 1 2013) [valid now]Key 3 -- text "CCIE"Accept lifetime (00:00:00 UTC Jan 1 20

Azure creates the 4-tier SLB run Web site

Public IP Address NICs for virtual machines Public network When the VM is created DIP Internal IP Address The IP address on the virtual NIC Vnet When the VM is created So let's get started.1. Create two virtual machines, and be sure to add the virtual machines to the availability set. Step slightly2. Create a Load Balancer3. Add back-end virtual machines4. Add a run state probe:The HTTP load balancer probe overrides the default g

Webmail attack and defense practices

Webmail is a service or technology that uses web browsers to send and receive emails. webmail can be used as long as it can access the Internet without using the client, this greatly facilitates sending and receiving emails. Webmail is an indispensable choice for users who are not familiar with the mail client or who are inconvenient to use the mail client in Int

SLB Principle Analysis and Practice Part 1-Introduction

SLB Principle Analysis and Practice Part 1-Introduction SeriesArticleIndex: Server Load balancer: requirements of Server Load balancer Server Load balancer details Article 2: Basic concepts of Server Load balancer-Network Basics Server Load balancer Part 3: basic concepts of Server Load balancer-Server group using Server Load balancer Server Load balancer details Article 4: basic concepts of Server Load balancer-Data Packet Flow During

Ali Cloud on the SLB on the deployment of HTTPS encountered problems and solutions

First, the problem scene This problem only occurs when the cloud server operating system uses Windows Server 2012, which is not a problem if you are using Windows Server 2008 R2. Second, HTTPS deployment scenario 1. Configuration of Aliyun SLB: For SLB to support HTTPS, you need to use 4-tier load balancing, which is to add the TCP protocol and add 443 ports. 2. Appropriate configuration of IIS in Wi

Open-source slb lvs error diagnosis case Column Analysis

Open-source slb lvs error diagnosis case Column AnalysisIn response to national calls and advocating security, autonomy and controllability of IT information system hardware and software facilities, our company is also striving to promote localization and open source of IT software and hardware. Therefore, the open source Server Load balancer software LVS is introduced and multiple LVS systems are deployed in production. A strange problem was found du

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