Enable SSH with password, iptables for sputnik

host_vars/sputnik

@@ -0,0 +1,7 @@
+inventory_hostname: sputnik.fet.htu.tuwien.ac.at
+inventory_hostname_short: sputnik
+
+common_iptables_v4: "iptables_sputnik_v4.j2"
+common_iptables_v6: "iptables_sputnik_v6.j2"
+
+common_openssh_password_authentication: "yes"

templates/iptables_sputnik_v4.j2

@@ -0,0 +1,14 @@
+# {{ ansible_managed }}
+
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
+-A INPUT -p icmp -j ACCEPT
+-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A INPUT -i lo -j ACCEPT
+-A INPUT -p tcp -j REJECT --reject-with tcp-reset
+-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
+-A INPUT -j REJECT --reject-with icmp-proto-unreachable
+COMMIT

templates/iptables_sputnik_v6.j2

@@ -0,0 +1,12 @@
+# {{ ansible_managed }}
+
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+-A INPUT -p tcp --syn -j DROP
+-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
+-A INPUT -p ipv6-icmp -j ACCEPT
+-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
+-A INPUT -i lo -j ACCEPT
+COMMIT