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https://github.com/xhdix/openconnect-installer
Automatically set up an Openconnect/Anyconnect VPN server(ocserv) with Let's Encrypt with just one command in CentOS 8.
https://github.com/xhdix/openconnect-installer
anyconnect anyconnect-vpn-server centos centos8 dns-leak-prevention ip-leak-prevention lets-encrypt letsencrypt letsencrypt-certificates linux linux-vpn-server ocserv ocserv-installer ocserv-script openconnect openconnect-vpn-server openconnectserver secure-vpn vpn vpn-server
Last synced: 4 days ago
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Automatically set up an Openconnect/Anyconnect VPN server(ocserv) with Let's Encrypt with just one command in CentOS 8.
- Host: GitHub
- URL: https://github.com/xhdix/openconnect-installer
- Owner: xhdix
- License: unlicense
- Created: 2018-07-14T15:32:59.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2022-10-01T12:11:58.000Z (about 2 years ago)
- Last Synced: 2024-08-02T22:23:03.375Z (3 months ago)
- Topics: anyconnect, anyconnect-vpn-server, centos, centos8, dns-leak-prevention, ip-leak-prevention, lets-encrypt, letsencrypt, letsencrypt-certificates, linux, linux-vpn-server, ocserv, ocserv-installer, ocserv-script, openconnect, openconnect-vpn-server, openconnectserver, secure-vpn, vpn, vpn-server
- Language: Shell
- Homepage:
- Size: 121 KB
- Stars: 125
- Watchers: 5
- Forks: 35
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Automatically set up an Openconnect VPN server(ocserv) with Let's Encrypt with just one command.
* Secured with a valid certificate from Let's encrypt
* No IP Leak
* No DNS Leak
* No request/send from/to external/third party sources
All you need: A CentOS 8 server with a domain.
Note 05/09/2021: If you had any problem, disable UDP and do not use the Anyconnect client app for a while!
Note 23/09/2021: Change the server or server IP every 3 months to prevent Google from tracking and [flagging your server's IP](https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issues/22369).
## Install, configure, run with one command:
Change the username-password list `pass.txt` (or create a new one) and then just run the command like this :
```bash
bash install.sh -f username-list-file -n host-name -e email-address
```
for example :
```bash
bash install.sh -f pass.txt -n my.example.com -e [email protected]
```
Note: By changing the script, you can get a certificate without an email address. But it is better not to.
(`--email $EMAIL_ADDR` to `--register-unsafely-without-email`)
-------------------
#### If you want to add a list of users again after installation:
```bash
bash adduser.sh username-list-file
e.g. :
bash adduser.sh pass2.text
```
#### Renew the certificate before/after 3 months:
```bash
certbot renew --quiet && systemctl restart ocserv # && systemctl restart ocserv2
```
### Run two copies of `ocserv` on the same server
Do you want to run `ocserv` on a new port with a different configuration? Take a look at `copyoc.sh`.
#### New `ocserv` copy
```bash
bash ./copyoc.sh -p
e.g. :
bash ./copyoc.sh -p 8443
```
#### New `ocserv` copy for families (Cloudflare DNS for families)
Will block malware and adult content in the new VPN service
```bash
bash ./copyoc.sh -p -f
e.g. :
bash ./copyoc.sh -p 2222 -f
```
## Bypass the Internet blackout
(reference: https://ooni.org/post/2019-iran-internet-blackout/#connecting-to-the-internet-from-iran)
After installing Openconnect on a foreign VPS, just enter these commands on the domestic VPS:
```bash
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 443 -j DNAT --to-destination [foreignVPSip]:443
iptables -t nat -A PREROUTING -i eth0 -p udp -m udp --dport 443 -j DNAT --to-destination [foreignVPSip]:443
iptables -t nat -A PREROUTING -i eth0 -p udp -m udp --dport 53 -j DNAT --to-destination [foreignVPSip]:53
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source [domesticVPSip]
```
_(Note: Make sure you use the correct network interface name. e.g. eth0 or enp0s3 or ... )_
Then save iptables:
```bash
yum install iptables-services -y
systemctl enable iptables
service iptables save
systemctl start iptables
```
And then use Openconnect like this:
```bash
echo password|openconnect --resolve=domain.com:[domesticVPSip] -vu username --passwd-on-stdin https://domain.com
```
Or temporary change `A` record to domestic VPS ip.
**Note: The amount of incoming and outgoing traffic on your domestic VPS should not be equal.**
**Please let me know if there is any problem.**