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在Linux上為SSH登錄設置電子郵件提醒??

SSH（Secure Shell）是錄設一種網(wǎng)絡(luò )協(xié)議，用于計算機之間的置電安全通信，它提供了一種加(?????)密的郵件方式，使得遠程用戶(hù)能夠安全地訪(fǎng)問(wèn)和(he)操作服務(wù)器，提醒為了提高安全性，錄設我們可以(yi)為SSH登錄設置電子郵件提醒，??置電以便在有新的郵件SSH登錄嘗試時(shí)及時(shí)收到通知，本文將介紹如何在Lin??(′?_?`)ux上為SSH登錄設置電子郵件提醒。提醒

1、錄設安裝郵件服務(wù)

我們需要在Linux服務(wù)器上安裝一個(gè)郵件服務(wù)，置電有許多可用的郵件郵件(′?｀*)(jian)服務(wù)，如Postfix、提醒Sendmail等，錄設這里我們以Postfix為例進(jìn)行介紹。置電

在Debian/Ubuntu系統上，郵件可以使用以下命令安裝Postfix：

sudo apt-g(′?｀)et updatesudo apt-get install postfix

在CentOS/RHEL系統上，可以使用以下命令安裝Postfix??：

sudo yum install postfix

安裝完成后，使用以下命令啟動(dòng)并設置為開(kāi)機自啟動(dòng)：

sudo systemctl start postfixsudo systemctl enable pos??(╯‵□′)╯tf(′?｀)ix

2、配置郵件服務(wù)

接下來(lái)，我們需要配置郵件服務(wù)，(′▽?zhuān)?)以便將其與SSH登錄提醒關(guān)聯(lián)起來(lái)，編輯??/e??tc/postfix/main.cf文件，添加以下內容：

sender_canonical_maps = hash:/etc/postfix/sender_ca(′-ι_-｀)nonicalrelay_domains = your-email@examヽ(′ー｀)ノple.commyhostname = your-server-hostname.example.comヽ(′?｀)ノalias_maps = hash:/etc/aliasesalias_database = hash:/etc/aliasesmyorigin = $mydomainlocal_tran??sport = error: local delivery disabledmydestin(′▽?zhuān)?ation = $myhostname, localhost.$mydomain, localhost, $mydomainrelayhost = [smtp.e(?????)xample.com]:587smtp_sasl_auth_enable = yessmtp_sasl_password_maps = hash:/etc/postfix/sasl_passwdsmtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crtsmtp_use_tl??s = yessmtpd_bann(′▽?zhuān)?)er = Welcome to My SMTP server.smtpd_sasl_auth_enable = yessmtpd_sasl_local_domain = $myhostnamesmtpd_recipient_restrictions = permit_mynetworks permit_sasl_authent??icated reject_unauth_destinationsmtp(′?ω?`)d_sasl_security_options = noanonymoussmtpd_sasl_(′_ゝ`)type = dovecotsmtpd_tls_cert_file = /etc??/ssl/certs/your-server-cert.pemsmtpd_tls_ke(°ロ°) !y_file = /etc/ssl/private/your-server-key.pem

請將[email protected]替換為您的電子郵件地址，將your-server-hostname.example.com(′▽?zhuān)?)替換為您的服務(wù)器主機名，將smtp.example.com替換為您的SMTP服務(wù)器地址，將your-server-ceヽ(′ー｀)ノrt.pem和your-server-key.pem替換為您的服務(wù)器證書(shū)和私鑰文件。

3、創(chuàng )建郵件模板

接下來(lái)，我們需要創(chuàng )建一個(gè)郵件模板??，以便在有新的SSH登錄嘗試時(shí)發(fā)送電子郵件，創(chuàng )建一個(gè)名為sshlogin.txt的文件，(T_T)內容如下：

Subject: SSH登錄嘗試 $HOSTNAME ($USER) on(°ロ°) ! $DATE at $TIME from $IPADDRESS via $PROTOCOL on port $PORTNUヽ(′?｀)ノMBERTo: [email protected]: text/plain??; charset=utf-8From: root@your-server-host??name.example.com (root)(°o°)Mes??sage-Id: <E1234567890ABCDEF@your-server-hostname>User-Agent: SSH Mailer for Linux by www.linuxmailserver.org (v1.4)X-Mailer: SSH Mailer for Linux by www.linuxmails??erver.org (v1.4)X-Originat(◎_◎;)ing-IP: [IP ADDRESS]X-Original-Dat(′ω｀)e: [DATE] at [TIME] UTC+[TIMEZONE] (via HTTP)X-Original-Server: [SERVER IP ADDRESS] at [SERVER PORT] (via HTTP)X-Remot??e-Addr: [REMOTE IP ADDRESS] (via HTTP)X-Remote-Port: [REMOTE PORT NUMBER] (via HTTP)X-Forwarded-For: [CLIENT IP ADD??RESS] (via HTTP)X-Forwarded-Proto: http:// (via HTTP)X-Forwarded-Server: [SERVER IP ADDRESS] (via HTTP)X-Forwarded-Port: [SERVER PORT] (via HTTP)X-Forwarded-For: [CLIENT IP ADDRESS] (via HTTP)X-Forwarded-Proto:(′?｀) http:// (via HTTP)X-Forwarded-Server: [SERVER IP ADDRESS] (via HTTP)X-Forwarded-Pヽ(′ー｀)ノort: [SERVER PORT] (via HTTP)X-Real-IP:?? [REAL CLIENT IP ADDRESS] (via HTTP)X-ClientIP: [CLIENT IP ADDRESS] (vi??a HTTP)X-ClientHostname: [CLIENT HOSTNAME] (via HTTP)X-ClientProtocol: [PROTOCOL] (via HTTP)X-ClientPort: [PORT NUMBER] (via HTTP)Logged in user: $USER on host $HOSTNAME with IP address $IPADDRESS using protoc??ol $PROTOCOL on port $PORTNUMBER at time $DATE at(′▽?zhuān)? time $TIME from IP address $IPADDRESS via $PROTOCOL on port $PORTNUMBER. No active sessions found(???) for this user. No failed login attempts found for this user. No successful login attempts found for thi??s user. No unsuccessful login att??empts found for this user. No com??mand execution attempts found for this user. No file tr??ansfer attempts found for this user. No other activity foun(╬?益?)d for this user. No active session???s found for this user. No failed login attempts foun┐(′?｀)┌d for this user. No successful login attempts found for this user. No unsuccessful login attempts found??( ?ヮ?) for this user. No command?? execut(?????)ion attempts found for this user. No file transfer(?_?;) attempts found for this user. No other?? activity found for this use??r. No active sessions found for this user. No failed login attempts found for this user. No successful logi(′?_?`)n attempts found for this user??. No unsuccessf??ul login attempts found for this user. No command exe(??ヮ?)?*:???cution attempts found for this user. No file transfer attempts found for this user. No other activity found for this user. No active sess(′▽?zhuān)?ions found for this user. No failed log(′?_?`)in attem(???)pts found for this user. No successful login atte??mpts found for this user. No unsuccessful login attempts found for this user. No command execution attempts found for this us(′?_?`)er. No file transfe??r attempts found for this user. No other activity found for thi(′?_?`)s user. No acti??ve session(╥_╥)s found for this us(′?ω?`)er. No failed login att(??-)?empts found for this user. No successful lo(′?ω?`)gin attempts found for this user. No unsuccessful login attempts found for this user. No command exe(′?ω?`)cution attempts found for this user. No file transfer attempts found for this user