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2026-03-26 10:37:06 +01:00
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commit 760bc7409d
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blacklists_iptables/README.md
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@@ -20,14 +20,16 @@ ipset restore < blacklist-v4.ipset
ipset restore < blacklist-v6.ipset ipset restore < blacklist-v6.ipset
``` ```
Apply inbound rules to traffic connecting to the VM: Apply inbound rules to traffic connecting to the VM and forwarded through the host:
```bash ```bash
iptables -I INPUT -m set --match-set blacklist-v4 src -m conntrack --ctstate NEW -j DROP iptables -I INPUT -m set --match-set blacklist-v4 src -m conntrack --ctstate NEW -j DROP
iptables -I FORWARD -m set --match-set blacklist-v4 src -m conntrack --ctstate NEW -j DROP
ip6tables -I INPUT -m set --match-set blacklist-v6 src -m conntrack --ctstate NEW -j DROP ip6tables -I INPUT -m set --match-set blacklist-v6 src -m conntrack --ctstate NEW -j DROP
ip6tables -I FORWARD -m set --match-set blacklist-v6 src -m conntrack --ctstate NEW -j DROP
``` ```
### 2) Block VK outbound traffic for VPN clients via NAT/FORWARD ### 2) Block VK outbound traffic
Load VK IPv4 and IPv6 sets: Load VK IPv4 and IPv6 sets:
@@ -36,7 +38,14 @@ ipset restore < blacklist-vk-v4.ipset
ipset restore < blacklist-vk-v6.ipset ipset restore < blacklist-vk-v6.ipset
``` ```
Apply forwarding rules for client egress traffic (replace `<VPN_IFACE>`): Apply OUTPUT rules for traffic originated on this host:
```bash
iptables -I OUTPUT -m set --match-set blacklist-vk-v4 dst -j REJECT
ip6tables -I OUTPUT -m set --match-set blacklist-vk-v6 dst -j REJECT
```
If you also need to block forwarded VPN-client traffic via NAT, add FORWARD rules (replace `<VPN_IFACE>`):
```bash ```bash
iptables -I FORWARD -i <VPN_IFACE> -m set --match-set blacklist-vk-v4 dst -j REJECT iptables -I FORWARD -i <VPN_IFACE> -m set --match-set blacklist-vk-v4 dst -j REJECT