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

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This commit is contained in:
jlehmann
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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README.md
+25 -81
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@@ -5,43 +5,23 @@ Installation Rocky Linux 9 Minimal
Partitionierung (LVM; XFS als Filesystem):
```
/boot 1 GB
/ XXX GB
swap X GB
/ 64 GB
/home 32 GB
swap 4 GB
```
Netzwerkkonfiguration:
```
# hostnamectl hostname ryovpn01.rych01.rychiger.com
Hostname: ryovpn01.rych01.rychiger.com
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
```
# yum update
# yum install kbd-legacy
# dracut -f
```
@@ -59,6 +39,7 @@ Noch ein paar Zusatzpakete:
# yum install bridge-utils -y
# yum install tcpdump -y
# yum install python3-bcrypt -y
# yum install tar -y
```
Wegen Entropy:
@@ -84,12 +65,12 @@ Konfiguration /etc/nginx/nginx.conf:
Installation von altem Server oder git uebernehmen...
# cd /opt
# git clone https://gitlab.com/drpuur/rych-openvpn.git openvpn # use personal access token in Gitlab
# cd openvpn && git checkout rockylinux9-based
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-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-443.log
@@ -101,66 +82,31 @@ Link erstellen:
Prinzipieller Aufbau:
```
enp0s10f0: Netzwerkinterface Richtung Intranet
enp0s10f1: Netzwerkinterface Richtung Internet
ens4: Netzwerkinterface Richtung Intranet
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)
-- enp0s10f1 => tap0 --+-- br0 (10.3.5.1/16)
-- ens3 => tap0 --+-- br0 (10.3.5.10/16)
tap1 |
-- enp0s10f0 ----------+
-- ens4 ----------+
```
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:
# 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 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:
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/ccd
# mkdir /opt/openvpn/status
```
User anlegen:
config/server-443.conf
+2 -2
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@@ -3,7 +3,7 @@ daemon
tls-server
proto tcp
port 443
local 192.168.99.11
local 192.168.99.111
client-config-dir /opt/openvpn/ccd
script-security 3
writepid /var/run/openvpn-server/myopenvpn-443.pid
@@ -13,7 +13,7 @@ tls-cipher "DEFAULT:@SECLEVEL=0"
; tunnel configuration
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
comp-lzo
persist-key
config/server.conf
+2 -2
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@@ -3,7 +3,7 @@ daemon
tls-server
proto udp
port 1194
local 192.168.99.11
local 192.168.99.111
client-config-dir /opt/openvpn/ccd
script-security 3
writepid /var/run/openvpn-server/myopenvpn.pid
@@ -13,7 +13,7 @@ tls-cipher "DEFAULT:@SECLEVEL=0"
; tunnel configuration
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
comp-lzo
persist-key
scripts/bridge-start.sh
+2 -2
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@@ -3,8 +3,8 @@
br="br0"
tap="tap0"
tap1="tap1"
eth="enp0s10f0"
br_ip="10.3.5.1"
eth="ens4"
br_ip="10.3.5.10"
br_netmask="255.255.0.0"
br_broadcast="10.3.255.255"
# Create the tap adapter
scripts/bridge-stop.sh
+1 -1
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@@ -1,7 +1,7 @@
#!/bin/bash
ifconfig br0 down
brctl delif br0 enp0s10f0
brctl delif br0 ens4
brctl delif br0 tap0
brctl delif br0 tap1
brctl delbr br0
scripts/reboot-if-ping-fails.sh
+1 -1
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@@ -1,5 +1,5 @@
#!/bin/bash
DEST="10.3.5.2"
DEST="10.3.5.11"
ping -c4 ${DEST} > /dev/null
systemd/myopenvpn.service
+1 -1
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@@ -1,6 +1,6 @@
[Unit]
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
[Service]