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iptables: drop instead accept all but SSH

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This commit is contained in:
Daniel A. Maierhofer
2018-11-04 21:21:36 +01:00
parent d738a88a2f
commit 5e916ca510
2 changed files with 16 additions and 4 deletions
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11
templates/iptables_default_v4.j2
View File

@@ -1,7 +1,14 @@
# {{ ansible_managed }} # {{ ansible_managed }}
*filter *filter
:INPUT ACCEPT [0:0] :INPUT DROP [0:0]
:FORWARD ACCEPT [0:0] :FORWARD DROP [0:0]
:OUTPUT ACCEPT [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 COMMIT

9
templates/iptables_default_v6.j2
View File

@@ -1,7 +1,12 @@
# {{ ansible_managed }} # {{ ansible_managed }}
*filter *filter
:INPUT ACCEPT [0:0] :INPUT DROP [0:0]
:FORWARD ACCEPT [0:0] :FORWARD DROP [0:0]
:OUTPUT ACCEPT [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 COMMIT