116 lines
3.9 KiB
Markdown
116 lines
3.9 KiB
Markdown
# Manage VPN Users
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*Read this in other languages: [English](manage-users.md), [简体中文](manage-users-zh.md).*
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By default, a single user account for VPN login is created. If you wish to add, edit or remove users, read this document.
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## Using helper scripts
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You may use these scripts to more easily manage VPN users: [add_vpn_user.sh](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/extras/add_vpn_user.sh), [del_vpn_user.sh](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/extras/del_vpn_user.sh) and [update_vpn_users.sh](https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/extras/update_vpn_users.sh). They will update users for both IPsec/L2TP and IPsec/XAuth (Cisco IPsec). For changing the IPsec PSK, read the next section.
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**Note:** VPN users are stored in `/etc/ppp/chap-secrets` and `/etc/ipsec.d/passwd`. The scripts will backup these files before making changes, with `.old-date-time` suffix.
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### Add or edit a VPN user
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Add a new VPN user or update an existing VPN user with a new password.
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```bash
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# Download the script
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wget -O add_vpn_user.sh https://raw.githubusercontent.com/hwdsl2/setup-ipsec-vpn/master/extras/add_vpn_user.sh
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```
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```bash
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# All values MUST be placed inside 'single quotes'
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# DO NOT use these special characters within values: \ " '
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sudo sh add_vpn_user.sh 'username_to_add' 'password_to_add'
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```
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### Delete a VPN user
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Delete the specified VPN user.
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```bash
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# Download the script
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wget -O del_vpn_user.sh https://raw.githubusercontent.com/hwdsl2/setup-ipsec-vpn/master/extras/del_vpn_user.sh
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```
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```bash
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# All values MUST be placed inside 'single quotes'
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# DO NOT use these special characters within values: \ " '
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sudo sh del_vpn_user.sh 'username_to_delete'
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```
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### Update all VPN users
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Remove all existing VPN users and replace with the list of users you specify.
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```bash
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# Download the script
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wget -O update_vpn_users.sh https://raw.githubusercontent.com/hwdsl2/setup-ipsec-vpn/master/extras/update_vpn_users.sh
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```
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To use this script, choose one of the following options:
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**Important:** This script will remove **ALL** existing VPN users and replace them with the list of users you specify. Therefore, you must include any existing user(s) you want to keep in the variables below.
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**Option 1:** Edit the script and enter VPN user details:
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```bash
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nano -w update_vpn_users.sh
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[Replace with your own values: YOUR_USERNAMES and YOUR_PASSWORDS]
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sudo sh update_vpn_users.sh
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```
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**Option 2:** Define VPN user details as environment variables:
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```bash
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# List of VPN usernames and passwords, separated by spaces
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# All values MUST be placed inside 'single quotes'
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# DO NOT use these special characters within values: \ " '
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sudo \
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VPN_USERS='username1 username2 ...' \
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VPN_PASSWORDS='password1 password2 ...' \
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sh update_vpn_users.sh
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```
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## Manually manage VPN users and PSK
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First, the IPsec PSK (pre-shared key) is stored in `/etc/ipsec.secrets`. To change to a new PSK, just edit this file. You must restart services when finished (see below). All VPN users will share the same IPsec PSK.
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```bash
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%any %any : PSK "your_ipsec_pre_shared_key"
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```
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For `IPsec/L2TP`, VPN users are specified in `/etc/ppp/chap-secrets`. The format of this file is:
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```bash
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"username1" l2tpd "password1" *
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"username2" l2tpd "password2" *
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... ...
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```
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You can add more users, use one line for each user. DO NOT use these special characters within values: `\ " '`
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For `IPsec/XAuth ("Cisco IPsec")`, VPN users are specified in `/etc/ipsec.d/passwd`. The format of this file is:
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```bash
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username1:password1hashed:xauth-psk
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username2:password2hashed:xauth-psk
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... ...
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```
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Passwords in this file are salted and hashed. This step can be done using e.g. the `openssl` utility:
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```bash
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# The output will be password1hashed
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# Put your password inside 'single quotes'
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openssl passwd -1 'password1'
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```
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Finally, you must restart services if changing the PSK. For add/edit/remove VPN users, this is normally not required.
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```bash
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service ipsec restart
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service xl2tpd restart
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```
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