kjuulh/wireguard-setup
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Switched to nftables, modified the default SSH port and removed fail2ban

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Héctor Molinero Fernández
2020-06-14 19:49:14 +02:00
parent 1122699107
commit 164b1538f0
7 changed files with 88 additions and 52 deletions
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28
packer/rootfs/etc/wireguard/wg0.conf
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@@ -8,29 +8,5 @@ PostUp = wg set '%i' private-key '/etc/wireguard/%i-privatekey'
# Load peers
PostUp = [ -e '/etc/wireguard/%i-peers.conf' ] || (umask 022 && touch '/etc/wireguard/%i-peers.conf')
PostUp = wg addconf '%i' '/etc/wireguard/%i-peers.conf'
# Enable IPv4/IPv6 forwarding
PostUp = grep -Fxq 1 /proc/sys/net/ipv4/ip_forward || printf 1 > /proc/sys/net/ipv4/ip_forward
PostUp = grep -Fxq 1 /proc/sys/net/ipv6/conf/all/forwarding || printf 1 > /proc/sys/net/ipv6/conf/all/forwarding
PostUp = grep -Fxq 1 /proc/sys/net/ipv6/conf/default/forwarding || printf 1 > /proc/sys/net/ipv6/conf/default/forwarding
# Store the internet-facing interface in a file for later use
PostUp = ip route show default 0.0.0.0/0 | awk '/^default/{print $5}' > /etc/wireguard/default-iface
# Allow access WireGuard via port 51820/UDP on the internet-facing interface
PostUp = iptables -A INPUT -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 51820 -j ACCEPT
PostUp = ip6tables -A INPUT -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 51820 -j ACCEPT
PostDown = iptables -D INPUT -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 51820 -j ACCEPT
PostDown = ip6tables -D INPUT -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 51820 -j ACCEPT
# Allow access WireGuard via port 53/UDP on the internet-facing interface (to circumvent some firewalls)
PostUp = iptables -t nat -A PREROUTING -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 53 -j REDIRECT --to-port 51820
PostUp = ip6tables -t nat -A PREROUTING -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 53 -j REDIRECT --to-port 51820
PostDown = iptables -t nat -D PREROUTING -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 53 -j REDIRECT --to-port 51820
PostDown = ip6tables -t nat -D PREROUTING -i "$(cat /etc/wireguard/default-iface)" -p udp --dport 53 -j REDIRECT --to-port 51820
# Allow packet forwarding on the WireGuard interface
PostUp = iptables -A FORWARD -i '%i' -j ACCEPT && iptables -t nat -A POSTROUTING -o "$(cat /etc/wireguard/default-iface)" -j MASQUERADE
PostUp = ip6tables -A FORWARD -i '%i' -j ACCEPT && ip6tables -t nat -A POSTROUTING -o "$(cat /etc/wireguard/default-iface)" -j MASQUERADE
PostDown = iptables -D FORWARD -i '%i' -j ACCEPT && iptables -t nat -D POSTROUTING -o "$(cat /etc/wireguard/default-iface)" -j MASQUERADE
PostDown = ip6tables -D FORWARD -i '%i' -j ACCEPT && ip6tables -t nat -D POSTROUTING -o "$(cat /etc/wireguard/default-iface)" -j MASQUERADE
# Allow access to the local DNS server on the WireGuard interface
PostUp = iptables -A INPUT -i '%i' -p tcp --dport 53 -j ACCEPT && iptables -A INPUT -i '%i' -p udp --dport 53 -j ACCEPT
PostUp = ip6tables -A INPUT -i '%i' -p tcp --dport 53 -j ACCEPT && ip6tables -A INPUT -i '%i' -p udp --dport 53 -j ACCEPT
PostDown = iptables -D INPUT -i '%i' -p tcp --dport 53 -j ACCEPT && iptables -D INPUT -i '%i' -p udp --dport 53 -j ACCEPT
PostDown = ip6tables -D INPUT -i '%i' -p tcp --dport 53 -j ACCEPT && ip6tables -D INPUT -i '%i' -p udp --dport 53 -j ACCEPT
# Reload nftables
PostUp = nft -f /etc/nftables.conf