Mike Sam
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    ###### tags: `1061` ###### LSA筆記規則:{`$:user mode` / `#:root mode`} # 1061 LSA week 9 (2017/11/15) 共筆 - mail ## scp 安全,但需要經常打指令 ``` $scp {檔案} {username}@{ip}:{路徑} ``` Example <span style="display:inline-block">$$\Longrightarrow$$</span> `$scp index.html username@10.10.10.10:~/home/username/directory` scp 上傳檔案會預設成664權限,若要更高可到config檔更改。 > ### 針對有設定安全性之提醒,有的人會把預設port更改 > -P 指定 port,若是預設 22 則可以不用輸入 > `example: $scp -p {port} {檔案名稱} {username}@{ip}:{路徑}` >>好用心,推。 >>好用心,推。 --- ## sftp 比ftp安全,一般主機只要有ssh就可用sftp SSH File Transfer Protocol ``` $ sftp {username}@{ip} $ get {path} ``` >> ### Example >> ``` >> $ sftp index.html username@10.10.10.10 >> sftp> get index.html >> ``` > [color=red] > ### sftp指令 > - 在指令前面多打個 l 代表在本地端執行 > pwd -> current directory > lpwd -> local current directory > get * -> download whole file within the directory > 好軟體推薦:[FileZilla](https://filezilla-project.org/) ## ncftp ``` $ sudo apt install ncftp $ ncftp ftp.ncnu.edu.tw ncftp> get robots.txt ``` > ### 指定使用者登入 >`$ ncftp -u {username} -p {password}` > #### 若無 -u 則預設使用 anonymous > ## samba ### 新增本機使用者 `$ sudo adduser {username}` adduser with home directory `$ sudo useradd {username}` adduser without home directory ### 更改samba's config `$ sudo vim /etc/samba/smb.conf` > smb.conf檔內對底端增設 >> [{分享檔案名稱}] >> comment = >> path = {PATH TO SHARE} >> public = yes >> writable = yes >> ;read only = no >> directory mode = 0755 >> create mode = 0755 >> >> [homes] >> comment = Home Directories >> browseable = no >> writable = yes >> create mode = 0644 >> directory mode = 0755 >> [SharedDir] >> comment = Shared Directory >> path = /Test >> public = yes >> writable = yes >> ;read only = no >> directory mode = 0755 >> create mode = 0755 >> valid users = @group >**0755 = rwxr-xr-x[color=blue] >至於rwx是什麼,請參考LINUX鳥哥** > ### 連接測試 > linux/mac: > - `smb:\\{ip}` > windows: > 1. `\\{ip}` > 2. Windows Key + R, type `\\{ip}` > ### 設定群組 修改 /etc/group `samba:x:1001:BlueT,Alice,Bob` 代表 BlueT,Alice,Bob 都在 samba 群組內 ## postfix `$ apt-get install postfix` `$ sudo dpkg-reconfigure postfix` `tab` > `ok` > `{name}` > `{username}` `$ sudo netstat -ntupl|grep 25|less` `$ ps aux|grep 24496` `$ iptables -nL` > [color=red] > #### BT講解 > `$ sudo dpkg -i chrome-fdrtyttfy.deb` > -i = install > `$ sudo apt install -f` > `$ sudo dpkg-reconfisgure postfix` 把這個套件重新設定一次。 > #### aptitude > `/` > `bad-mailx` > `/` > `postfix` > 可透過相依關係查詢 > ### postfix > MTA contains 2 function > : 1. send > : 2. receive > #### Configuration > - Internet Site 由本機寄信 > - Internet with smarthost 交由其他郵件伺服器寄信 > - Local only 只能主機內使用者相互寄信 > #### Mail for the 'postmaster' > - 如果有人寄給管理員,要轉送給誰 > #### network blocks for which this host should relay mail > - 哪些網段的人可以寄信 > #### Local address extension character > - 預設為 + 號 > - e.g., aaa+domain@gmail.com > - 這是說寄給 aaa@gmail.com > - 但是收件者可以自行將該信分類到 domain > 0.0.0.0是指所有區段 > :::danger 安裝後請確保是否可執行以下指令: 1. iptables 2. route ::: ## smtp DEMO by yy.chang > smtp 寄信protocol : 25 > `$ telnet smtp.ncnu.edu.tw 25` > > HELO > > MAIL FROM:a@ncnu.edu.tw > > RCPT TO:{要寄給誰@mail.com} > > DATA > > From : {sender@mail.com} > > To : {who@mail.com} > > Subject: {主旨} > > {信件內容} > > {type 什麼字元} > > . > > {type enter} > > Webmail 推薦: squirrelmail 下週上課前請先了解何謂 TCP/IP, OSI

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