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new VM has been built, not tested yet (missing FW-forwarding

This commit is contained in:
Joerg Lehmann 2022-10-21 14:27:05 +02:00
parent ab1cc24da2
commit 313aa93ce5
7 changed files with 35 additions and 91 deletions
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106
README.md
View File

@ -5,43 +5,23 @@ Installation Rocky Linux 9 Minimal
Partitionierung (LVM; XFS als Filesystem): Partitionierung (LVM; XFS als Filesystem):
``` ```
/boot 1 GB /boot 1 GB
/ XXX GB / 64 GB
swap X GB /home 32 GB
swap 4 GB
``` ```
Netzwerkkonfiguration: Netzwerkkonfiguration:
``` ```
# hostnamectl hostname ryovpn01.rych01.rychiger.com
Hostname: ryovpn01.rych01.rychiger.com Hostname: ryovpn01.rych01.rychiger.com
DNS: 8.8.8.8 DNS: 8.8.8.8
NTP: XXXXXX
XXXXXX
TODO:
TYPE="Ethernet"
NAME="enp0s10f0"
DEVICE="enp0s10f0"
ONBOOT="yes"
IPV6INIT=no
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="no"
NAME="enp0s10f1"
DEVICE="enp0s10f1"
ONBOOT="yes"
DNS1="8.8.8.8"
IPADDR=192.168.99.11
PREFIX=24
GATEWAY=192.168.99.1
UUID=9c92fad9-6ecb-3e6c-eb4d-8a47c6f50c04
``` ```
Installation diverse Pakete Installation diverse Pakete
``` ```
# yum update
# yum install kbd-legacy # yum install kbd-legacy
# dracut -f # dracut -f
``` ```
@ -59,6 +39,7 @@ Noch ein paar Zusatzpakete:
# yum install bridge-utils -y # yum install bridge-utils -y
# yum install tcpdump -y # yum install tcpdump -y
# yum install python3-bcrypt -y # yum install python3-bcrypt -y
# yum install tar -y
``` ```
Wegen Entropy: Wegen Entropy:
@ -84,12 +65,12 @@ Konfiguration /etc/nginx/nginx.conf:
Installation von altem Server oder git uebernehmen... Installation von altem Server oder git uebernehmen...
# cd /opt # cd /opt
# git clone https://gitlab.com/drpuur/rych-openvpn.git openvpn # use personal access token in Gitlab # git clone https://gitlab.com/drpuur/rych-openvpn.git openvpn # use personal access token in Gitlab
# cd openvpn && git checkout rockylinux9-based
SELinux: SELinux:
# semanage fcontext -a -t httpd_sys_content_t /opt/openvpn/status/openvpnserver-status.log # semanage fcontext -a -t httpd_sys_content_t /opt/openvpn/status/openvpnserver-status.log
# semanage fcontext -a -t httpd_sys_content_t /opt/openvpn/status/openvpnserver-status-443.log # semanage fcontext -a -t httpd_sys_content_t /opt/openvpn/status/openvpnserver-status-443.log
# semanage port -a -t ssh_port_t -p tcp 2202 # semanage port -a -t ssh_port_t -p tcp 2022
# restorecon -v /opt/openvpn/status/openvpnserver-status.log # restorecon -v /opt/openvpn/status/openvpnserver-status.log
# restorecon -v /opt/openvpn/status/openvpnserver-status-443.log # restorecon -v /opt/openvpn/status/openvpnserver-status-443.log
@ -101,66 +82,31 @@ Link erstellen:
Prinzipieller Aufbau: Prinzipieller Aufbau:
``` ```
enp0s10f0: Netzwerkinterface Richtung Intranet ens4: Netzwerkinterface Richtung Intranet
enp0s10f1: Netzwerkinterface Richtung Internet ens3: Netzwerkinterface Richtung Internet
enp0s10f1 (192.168.99.11/24) ==> hier hoert OpenVPN und bildet das Device tap0 ens3 (192.168.99.111/24) ==> hier hoert OpenVPN und bildet das Device tap0
Eine zweite OpenVPN Instanz bildet das Device tap1 (443/TCP) Eine zweite OpenVPN Instanz bildet das Device tap1 (443/TCP)
-- enp0s10f1 => tap0 --+-- br0 (10.3.5.1/16) -- ens3 => tap0 --+-- br0 (10.3.5.10/16)
tap1 | tap1 |
-- enp0s10f0 ----------+ -- ens4 ----------+
``` ```
OpenVPN Client Range: 10.3.6.1 bis 10.3.7.254 (mit PUSH gemanaged) OpenVPN Client Range: 10.3.6.1 bis 10.3.7.254 (mit PUSH gemanaged)
Hyper-V Integration:
Als Network-Karte muss Legacy gewaehlt werden. Spoofing muss erlaubt sein (wegen Bridge). Zeit Synchronisation muss abgeschaltet sein.
```
# yum install hyperv-daemons
# systemctl enable hypervvssd
# systemctl enable hypervkvpd
```
Firewall:
```
/etc/sysconfig/iptables:
# sample configuration for iptables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -m state --state NEW -s 10.3.6.0/23,10.1.4.0/24 -j LOG --log-prefix "INPUT:DROP-VPN-CLIENT-NET:" -m limit --limit 5/minute --log-level 6
-A INPUT -m state --state NEW -s 10.3.6.0/23,10.1.4.0/24 -j DROP
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-I INPUT -i enp0s10f1 -p udp -m udp --dport 1194 -j ACCEPT
-I INPUT -i enp0s10f1 -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 2022 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp -s 10.3.5.2 --dport 80 -j ACCEPT
-A INPUT -j LOG --log-prefix "INPUT:DROP:" -m limit --limit 5/minute --log-level 6
#-A INPUT -j DROP
-A FORWARD -j LOG --log-prefix "FORWARD:DROP:" -m limit --limit 5/minute --log-level 6
#-A FORWARD -j DROP
-A OUTPUT -s 192.168.99.11/32 -j ACCEPT
-A OUTPUT -s 10.3.5.1/32 -d 10.3.5.2/32 -j ACCEPT
-A OUTPUT -p icmp -j ACCEPT
-A OUTPUT -j LOG --log-prefix "OUTPUT:DROP:" -m limit --limit 5/minute --log-level 6
#-A OUTPUT -j DROP
COMMIT
```
``` ```
Disable IPv6: Disable IPv6:
# nmcli connection modify <Connection Name> ipv6.method "disabled" # nmcli connection modify ens3 ipv6.method "disabled"
# nmcli connection modify ens4 ipv6.method "disabled"
Set end4 to unmanaged:
[root@ryovpn01 ~]# cat /etc/NetworkManager/conf.d/99-unmanaged-devices.conf
[keyfile]
unmanaged-devices=interface-name:ens4
``` ```
``` ```
@ -168,10 +114,6 @@ Disable IPv6:
Port 22 Port 22
Port 2022 Port 2022
... ...
# Ciphers and keying
#RekeyLimit default none
Ciphers chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
KexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
``` ```
@ -190,9 +132,11 @@ MAILTO=root
Startup mit Systemd einrichten: Startup mit Systemd einrichten:
gemaess /opt/openvpn/systemd/README gemaess /opt/openvpn/systemd/README
Verzeichnis /opt/openvpn/users muss angelegt werden: Verzeichnis /opt/openvpn/users ccd und status muss angelegt werden:
``` ```
# mkdir /opt/openvpn/users # mkdir /opt/openvpn/users
# mkdir /opt/openvpn/ccd
# mkdir /opt/openvpn/status
``` ```
User anlegen: User anlegen:

4
config/server-443.conf
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@ -3,7 +3,7 @@ daemon
tls-server tls-server
proto tcp proto tcp
port 443 port 443
local 192.168.99.11 local 192.168.99.111
client-config-dir /opt/openvpn/ccd client-config-dir /opt/openvpn/ccd
script-security 3 script-security 3
writepid /var/run/openvpn-server/myopenvpn-443.pid writepid /var/run/openvpn-server/myopenvpn-443.pid
@ -13,7 +13,7 @@ tls-cipher "DEFAULT:@SECLEVEL=0"
; tunnel configuration ; tunnel configuration
dev tap1 dev tap1
server-bridge 10.3.5.1 255.255.0.0 10.3.6.1 10.3.7.254 server-bridge 10.3.5.10 255.255.0.0 10.3.6.1 10.3.7.254
passtos passtos
comp-lzo comp-lzo
persist-key persist-key

4
config/server.conf
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@ -3,7 +3,7 @@ daemon
tls-server tls-server
proto udp proto udp
port 1194 port 1194
local 192.168.99.11 local 192.168.99.111
client-config-dir /opt/openvpn/ccd client-config-dir /opt/openvpn/ccd
script-security 3 script-security 3
writepid /var/run/openvpn-server/myopenvpn.pid writepid /var/run/openvpn-server/myopenvpn.pid
@ -13,7 +13,7 @@ tls-cipher "DEFAULT:@SECLEVEL=0"
; tunnel configuration ; tunnel configuration
dev tap0 dev tap0
server-bridge 10.3.5.1 255.255.0.0 10.3.6.1 10.3.7.254 server-bridge 10.3.5.10 255.255.0.0 10.3.6.1 10.3.7.254
passtos passtos
comp-lzo comp-lzo
persist-key persist-key

4
scripts/bridge-start.sh
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@ -3,8 +3,8 @@
br="br0" br="br0"
tap="tap0" tap="tap0"
tap1="tap1" tap1="tap1"
eth="enp0s10f0" eth="ens4"
br_ip="10.3.5.1" br_ip="10.3.5.10"
br_netmask="255.255.0.0" br_netmask="255.255.0.0"
br_broadcast="10.3.255.255" br_broadcast="10.3.255.255"
# Create the tap adapter # Create the tap adapter

2
scripts/bridge-stop.sh
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@ -1,7 +1,7 @@
#!/bin/bash #!/bin/bash
ifconfig br0 down ifconfig br0 down
brctl delif br0 enp0s10f0 brctl delif br0 ens4
brctl delif br0 tap0 brctl delif br0 tap0
brctl delif br0 tap1 brctl delif br0 tap1
brctl delbr br0 brctl delbr br0

2
scripts/reboot-if-ping-fails.sh
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@ -1,5 +1,5 @@
#!/bin/bash #!/bin/bash
DEST="10.3.5.2" DEST="10.3.5.11"
ping -c4 ${DEST} > /dev/null ping -c4 ${DEST} > /dev/null

2
systemd/myopenvpn.service
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@ -1,6 +1,6 @@
[Unit] [Unit]
Description=My OpenVPN Service Description=My OpenVPN Service
After=network-online.target network.target remote-fs.target nss-lookup.target After=network-online.target network.target remote-fs.target
Requires=network-online.target Requires=network-online.target
[Service] [Service]