--reject-with icmp-port-unreachable -A KUBE-SERVICES -d 10.96.61.252/32 -p tcp -m comment --comment "default/nginx-64: has no endpoints" -m tcp --dport 80 -j REJECT --reject-with icmp-port-unreachable -A KUBE-SERVICES --reject-with icmp-port-unreachable -A KUBE-SERVICES -d 10.98.85.41/32 -p tcp -m comment --comment "default/nginx-9: has no endpoints" -m tcp --dport 80 -j REJECT --reject-with icmp-port-unreachable -A KUBE-SERVICES --reject-with icmp-port-unreachable -A KUBE-SERVICES -d 10.106.49.80/32 -p tcp -m comment --comment "default/nginx-37: has no endpoints" -m tcp --dport 80 -j REJECT --reject-with icmp-port-unreachable -A KUBE-SERVICES

Host Unreachable From 192.168.10.10 icmp_seq=2 Destination Host Unreachable From 192.168.10.10 icmp_seq=3 Destination Host Unreachable From 192.168.10.10 icmp_seq=4 Destination Host Unreachable --- Port Unreachable From 192.168.10.10 icmp_seq=2 Destination Port Unreachable From 192.168.10.10 icmp_seq=3 Destination Port Unreachable From 192.168.10.10 icmp_seq=4 Destination Port Unreachable --- anywhere reject-with icmp- port-unreachable REJECT all -- anywhere anywhere reject-with icmp- port-unreachable Chain OUTPUT (policy ACCEPT) 243

time-exceeded, parameter-problem, destination-unreachable } accept # allow icmp6 icmpv6 type { time-exceeded, parameter-problem, destination-unreachable, nd-neighbor-solicit, nd-router-advert, time-exceeded, parameter-problem, destination-unreachable } accept # allow icmp6 ip6 nexthdr icmpv6

REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out

0/0 ˓→ tcp dpt:443 6 22 2044 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 ˓→ reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out source 0/0 ˓→ tcp dpt:443 5 22 2044 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 ˓→ reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out source state NEW tcp dpt:22 4 22 2044 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 ˓→ reject-with icmp-port-unreachable Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) num pkts bytes target prot opt in out source

node through which the service is accessed is removed from the cluster or if it otherwise becomes unreachable. This will add a deployment for clustermesh-apiserver into your cluster, as well as the related namespaces like CAP_NET_ADMIN without affecting security since BPF enforcement points in the host are unreachable for the container. Given BPF programs are attached from the host’s network namespace, BPF also labeled by action type Cluster health Name Labels Description unreachable_nodes Number of nodes that cannot be reached unreachable_health_endpoints Number of health endpoints that cannot be reached

a few things from this config: • cache_credentials: this allows logins when the AD server is unreachable • home directory: it’s by default /home/@. For example, the AD user john will have PING 10.10.11.2 (10.10.11.2) 56(84) bytes of data. From 10.10.11.1 icmp_seq=1 Destination Host Unreachable ping: sendmsg: Destination address required This is happening because the WireGuard interface PING 10.10.11.1 (10.10.11.1) 56(84) bytes of data. From 10.10.11.2 icmp_seq=1 Destination Host Unreachable ping: sendmsg: Required key not available Can happen when you have a route directing traffic

namespaces like CAP_NET_ADMIN without affecting security since BPF enforcement points in the host are unreachable for the container. Given BPF programs are attached from the host’s network namespace, BPF also labeled by action type Cluster health Name Labels Description unreachable_nodes Number of nodes that cannot be reached unreachable_health_endpoints Number of health endpoints that cannot be reached sec10.html#sec10.4.5] – Identities with provided parameters not found 520 – Identity storage unreachable. Likely a network problem. 521 – Invalid identity format in storage GET /identity/{id} Retrieve

node through which the service is accessed is removed from the cluster or if it otherwise becomes unreachable. This will add a deployment for clustermesh-apiserver into your cluster, as well as the related labeled by action type Cluster health Name Labels Description unreachable_nodes Number of nodes that cannot be reached unreachable_health_endpoints Number of health endpoints that cannot be reached sec10.html#sec10.4.5] – Identities with provided parameters not found 520 – Identity storage unreachable. Likely a network problem. 521 – Invalid identity format in storage Parameters: Status Codes:

namespaces like CAP_NET_ADMIN without affec�ng security since BPF enforcement points in the host are unreachable for the container. Given BPF programs are a�ached from the host’s network namespace, BPF also has 6- sec10.html#sec10.4.5] – Iden��es with provided parameters not found 520 – Iden�ty storage unreachable. Likely a network problem. 521 – Invalid iden�ty format in storage GET /identity/{id} Retrieve org/Protocols/rfc2616/rfc2616- sec10.html#sec10.4.5] – Iden�ty not found 520 – Iden�ty storage unreachable. Likely a network problem. 521 – Invalid iden�ty format in storage POST /ipam Allocate an IP