feat: add infrastructure diagnostic and monitoring scripts

scripts/check_nutserver_net.py

@@ -0,0 +1,20 @@
+import paramiko
+import sys
+
+sys.stdout.reconfigure(encoding='utf-8')
+key_path = r'C:\Users\Snarf\.ssh\id_ed25519_snarfnet'
+
+c = paramiko.SSHClient()
+c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+c.connect("14.4.4.44", username="root", key_filename=key_path, timeout=10)
+
+def run(cmd):
+    stdin, stdout, stderr = c.exec_command(cmd)
+    return stdout.read().decode('utf-8', errors='ignore').strip()
+
+print("iptables check:", run("iptables --version; which iptables nft ipset"))
+print("ip forwarding:", run("cat /proc/sys/net/ipv4/ip_forward"))
+print("canary test ping to gateway:", run("ping -c 2 14.4.4.1"))
+
+c.close()
+