• Secure Connections
• VPN
• Math Email
• vacation Autoreply
• Backups
• X Window

Secure Connections

OS X has ssh, scp and rsync built-in. Command line Terminal is in Applications → Utilities.

Filezilla is a GUI program for both SSH File Transfer or SFTP. Install using your distribution's software manager or download from filezilla-project.org. Lauch the program, choose File > Site Manager > New Site. Configure SFTP connection to gauss:

Protocol: SFTP - SSH File Transfer Protocol
Host: math.dartmouth.edu
Logon Type: Ask for password
User: your username on gauss

Click OK to save configuration or Connect to save and connect at once.

VPN

Dartmouth currently supports the GlobalProtect VPN client by Palo Alto Networks. See installation instructions for macOS.

Math VPN uses OpenVPN technology.

1. Download DigiCert root certificate (Ctrl-click, Save As...).
2. Get Math VPN configuration file MathVPN.conf
3. Download Tunnelblick. It's an OpenVPN client and GUI for Mac OS X. Open downloaded disk image and launch Tunnelblick. Select the following, when prompted:
• I have configuration files
• OpenVPN Configuration(s)
• Drag the downloaded MathVPN.conf into Configurations area of Tunnelbick window.
4. Click on a tunnel icon, which should have appeared at the right end of the desktop menu bar. Select Connect ‘MathVPN’. When asked for Username and Password, use your Math (“gauss”) username and password. After a few moments you should see the light in Tunnelblick icon. You are connected to Math VPN now.
5. To disconnect click the tunnel icon again and select Disconnect.
6. N.B. If you get DNS-related errors while conencting, please change a setting in Tunnelblick:
   Settings → Advanced → Connecting & Disconnecting, check “Allow changes to manually-set network settings”.

Math Email

If you have Math Dept. user account (also known as “gauss” account), you also have a corresponding email account. Your Math email arrives at (and can be sent from) math.dartmouth.edu server. It can be accessed instantly and globally via Webmail — this does not require any configuration! As for email applications, all of them, including mobile, can be configured to use your Math account using these generic settings:

• Incoming server: math.dartmouth.edu, type: IMAP, port: 143
• Connection type/encryption: TLS
• Username: your Math username
• Password: for the username above
• Outgoing/SMTP server: math.dartmouth.edu, port: 587, protocol: STARTTLS; authenticate with Math username and password

Below are step-by-step instructions on how to add your mathusername@math.dartmouth.edu account to Thunderbird and Apple Mail. Please use plain text to write email whenever possible (useplaintext.email), thank You!

Thunderbird

1. Tools → Account Settings → Account Actions → Add Mail Account
   

   Your name: Your real name
   Email address: mathusername@math.dartmouth.edu
   Password: password for the above
   Continue — Thunderbird will probe servers and should detect correct connection settings:
   

             Incoming: math.dartmouth.edu  IMAP  143  STARTTLS
             Outgoing: math.dartmouth.edu  SMTP  587  STARTTLS
         

   If settings were detected correctly — click Create Account.
   Otherwise click Manual Setup and enter correct settings under Server Settings and Outgoing Server (SMTP).

2. Tools → Account Settings
   Server Settings: Advanced: IMAP server directory: mail
   Composition & Addressing: Uncheck “Compose messages in HTML format”.

Apple Mail

1. Preferences → Accounts →
   

   Full Name: Your real name
   Email Address: mathusername@math.dartmouth.edu
   Password: password for the above
   Continue. Accept certificate for math.dartmouth.edu.
   Incomig Mail Server

   Account Type: IMAP
   Incoming Mail Server: math.dartmouth.edu
   User Name: mathusername
   Password: password for the above
   

   Outgoing Mail Server

   Outgoing Mail Server: math.dartmouth.edu
   Check Use Authentication
   User Name: mathusername
   Password: password for the above
   

   Create

2. Preferences → Accounts → Advanced
   IMAP Path Prefix: mail
3. Preferences → Composing
   Message Format: Plain Text

Vacation Autoreply

1. Start Filezilla. Connect to gauss using Math username and password.
2. Edit autoreply message text:
• Find .vacation.msg
• Ctrl-click on it, choose View/Edit, make any changes, save, close editor window.
• Filezilla will offer to upload changed file back to the server. Choose “Yes”.
3. Enable autoreply:
• Find .procmailrc
• Ctrl-click on it, choose View/Edit, find these two lines:
  #:0c
#|/usr/bin/vacation username
• Remove any leading # characters from both lines, save, close editor window, “Yes” to upload.
4. Send an email to yourself from another mail account as a test.
5. To disable autoreply, edit .procmailrc and comment out the two lines by putting back # characters at the beginning of each line.

Backing up your files

Making X connections to UNIX/Linux machines