core network better iptables documentation

1 files changed, 204 insertions, 0 deletions

diff --git a/core/conf/iptables/server.v4 b/core/conf/iptables/server.v4
new file mode 100644
index 0000000..ed202ee
--- /dev/null
+++ b/core/conf/iptables/server.v4
@@ -0,0 +1,204 @@
+# Generated by iptables-save v1.8.2 on Sat Jun  8 19:50:25 2019
+*security
+:INPUT ACCEPT [0:0]
+:FORWARD ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+COMMIT
+# Completed on Sat Jun  8 19:50:25 2019
+# Generated by iptables-save v1.8.2 on Sat Jun  8 19:50:25 2019
+*raw
+:PREROUTING ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+COMMIT
+# Completed on Sat Jun  8 19:50:25 2019
+# Generated by iptables-save v1.8.2 on Sat Jun  8 19:50:25 2019
+*nat
+:PREROUTING ACCEPT [0:0]
+:INPUT ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+:POSTROUTING ACCEPT [0:0]
+COMMIT
+# Completed on Sat Jun  8 19:50:25 2019
+# Generated by iptables-save v1.8.2 on Sat Jun  8 19:50:25 2019
+*mangle
+:PREROUTING ACCEPT [0:0]
+:INPUT ACCEPT [0:0]
+:FORWARD ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+:POSTROUTING ACCEPT [0:0]
+COMMIT
+# Completed on Sat Jun  8 19:50:25 2019
+# Generated by iptables-save v1.8.2 on Sat Jun  8 19:50:25 2019
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT DROP [0:0]
+:blocker - [0:0]
+:cli_dns_in - [0:0]
+:cli_dns_out - [0:0]
+:cli_ftp_in - [0:0]
+:cli_ftp_out - [0:0]
+:cli_git_in - [0:0]
+:cli_git_out - [0:0]
+:cli_gpg_in - [0:0]
+:cli_gpg_out - [0:0]
+:cli_http_in - [0:0]
+:cli_http_out - [0:0]
+:cli_https_in - [0:0]
+:cli_https_out - [0:0]
+:cli_irc_in - [0:0]
+:cli_irc_out - [0:0]
+:cli_pops_in - [0:0]
+:cli_pops_out - [0:0]
+:cli_smtps_in - [0:0]
+:cli_smtps_out - [0:0]
+:cli_ssh_in - [0:0]
+:cli_ssh_out - [0:0]
+:srv_db_in - [0:0]
+:srv_db_out - [0:0]
+:srv_dhcp - [0:0]
+:srv_dns_in - [0:0]
+:srv_dns_out - [0:0]
+:srv_git_in - [0:0]
+:srv_git_out - [0:0]
+:srv_http_in - [0:0]
+:srv_http_out - [0:0]
+:srv_https_in - [0:0]
+:srv_https_out - [0:0]
+:srv_icmp - [0:0]
+:srv_rip - [0:0]
+:srv_ssh_in - [0:0]
+:srv_ssh_out - [0:0]
+-A INPUT -s 127.0.0.0/8 -d 127.0.0.0/8 -i lo -j ACCEPT
+-A INPUT -j blocker
+-A INPUT -s 212.55.154.174/32 -d 10.0.0.254/32 -i enp8s0 -j cli_dns_in
+-A INPUT -s 10.0.0.0/8 -d 10.0.0.254/32 -i enp8s0 -j srv_https_in
+-A INPUT -s 10.0.0.0/8 -d 10.0.0.254/32 -i enp8s0 -j srv_ssh_in
+-A INPUT -s 10.0.0.0/8 -d 10.0.0.254/32 -i enp8s0 -j srv_git_in
+-A INPUT -d 10.0.0.254/32 -i enp8s0 -j srv_https_in
+-A INPUT -d 10.0.0.254/32 -i enp8s0 -j cli_https_in
+-A INPUT -d 10.0.0.254/32 -i enp8s0 -j srv_ssh_in
+-A INPUT -d 10.0.0.254/32 -i enp8s0 -j srv_git_in
+-A INPUT -j LOG --log-prefix "iptables: INPUT: " --log-level 7
+-A FORWARD -j LOG --log-prefix "iptables: FORWARD: " --log-level 7
+-A OUTPUT -s 127.0.0.0/8 -d 127.0.0.0/8 -o lo -j ACCEPT
+-A OUTPUT -j blocker
+-A OUTPUT -s 10.0.0.254/32 -d 212.55.154.174/32 -o enp8s0 -j cli_dns_out
+-A OUTPUT -s 10.0.0.254/32 -d 10.0.0.0/8 -o enp8s0 -j srv_https_out
+-A OUTPUT -s 10.0.0.254/32 -d 10.0.0.0/8 -o enp8s0 -j srv_ssh_out
+-A OUTPUT -s 10.0.0.254/32 -d 10.0.0.0/8 -o enp8s0 -j srv_git_out
+-A OUTPUT -s 10.0.0.254/32 -o enp8s0 -j cli_https_out
+-A OUTPUT -s 10.0.0.254/32 -o enp8s0 -j srv_https_out
+-A OUTPUT -d 10.0.0.0/8 -o enp8s0 -j srv_ssh_out
+-A OUTPUT -d 10.0.0.0/8 -o enp8s0 -j srv_git_out
+-A OUTPUT -j LOG --log-prefix "iptables: OUTPUT: " --log-level 7
+-A blocker -p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop sync: " --log-level 7
+-A blocker -p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -j DROP
+-A blocker -f -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop frag: "
+-A blocker -f -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN,RST,PSH,ACK,URG -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop null: "
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -j DROP
+-A blocker -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop syn rst syn rs"
+-A blocker -p tcp -m tcp --tcp-flags SYN,RST SYN,RST -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop xmas: "
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,ACK FIN -m limit --limit 5/min --limit-burst 7 -j LOG --log-prefix "iptables: drop fin scan: "
+-A blocker -p tcp -m tcp --tcp-flags FIN,ACK FIN -j DROP
+-A blocker -p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,SYN,RST,ACK,URG -j DROP
+-A blocker -j RETURN
+-A cli_dns_in -p udp -m udp --sport 53 --dport 1024:65535 -j ACCEPT
+-A cli_dns_in -j RETURN
+-A cli_dns_out -p udp -m udp --sport 1024:65535 --dport 53 -j ACCEPT
+-A cli_dns_out -j RETURN
+-A cli_ftp_in -p tcp -m tcp --sport 21 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_ftp_in -p tcp -m tcp --sport 20 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A cli_ftp_in -p tcp -m tcp --sport 1024:65535 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_ftp_in -j RETURN
+-A cli_ftp_out -p tcp -m tcp --sport 1024:65535 --dport 21 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_ftp_out -p tcp -m tcp --sport 1024:65535 --dport 20 -m state --state ESTABLISHED -j ACCEPT
+-A cli_ftp_out -p tcp -m tcp --sport 1024:65535 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A cli_ftp_out -j RETURN
+-A cli_git_in -p tcp -m tcp --sport 9418 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_git_in -j RETURN
+-A cli_git_out -p tcp -m tcp --sport 1024:65535 --dport 9418 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_git_out -j RETURN
+-A cli_gpg_in -p tcp -m tcp --sport 11371 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_gpg_in -j RETURN
+-A cli_gpg_out -p tcp -m tcp --sport 1024:65535 --dport 11371 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_gpg_out -j RETURN
+-A cli_http_in -p tcp -m tcp --sport 80 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_http_in -p udp -m udp --sport 80 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_http_in -j RETURN
+-A cli_http_out -p tcp -m tcp --sport 1024:65535 --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_http_out -p udp -m udp --sport 1024:65535 --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_http_out -j RETURN
+-A cli_https_in -p tcp -m tcp --sport 443 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_https_in -p udp -m udp --sport 443 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_https_in -j RETURN
+-A cli_https_out -p tcp -m tcp --sport 1024:65535 --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_https_out -p udp -m udp --sport 1024:65535 --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_https_out -j RETURN
+-A cli_irc_in -p tcp -m tcp --sport 6667 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_irc_in -j RETURN
+-A cli_irc_out -p tcp -m tcp --sport 1024:65535 --dport 6667 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_irc_out -j RETURN
+-A cli_pops_in -p tcp -m tcp --sport 995 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_pops_in -j RETURN
+-A cli_pops_out -p tcp -m tcp --sport 1024:65535 --dport 995 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_pops_out -j RETURN
+-A cli_smtps_in -p tcp -m tcp --sport 465 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_smtps_in -j RETURN
+-A cli_smtps_out -p tcp -m tcp --sport 1024:65535 --dport 465 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_smtps_out -j RETURN
+-A cli_ssh_in -p tcp -m tcp --sport 2222 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_ssh_in -p tcp -m tcp --sport 22 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A cli_ssh_in -j RETURN
+-A cli_ssh_out -p tcp -m tcp --sport 1024:65535 --dport 2222 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_ssh_out -p tcp -m tcp --sport 1024:65535 --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A cli_ssh_out -j RETURN
+-A srv_db_in -p tcp -m tcp --sport 1024:65535 --dport 5432 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_db_in -j RETURN
+-A srv_db_out -p tcp -m tcp --sport 5432 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A srv_db_out -j RETURN
+-A srv_dhcp -p udp -m udp --sport 68 --dport 67 -j ACCEPT
+-A srv_dhcp -p udp -m udp --sport 67 --dport 68 -j ACCEPT
+-A srv_dhcp -p udp -m udp --sport 67 --dport 67 -j ACCEPT
+-A srv_dhcp -j RETURN
+-A srv_dns_in -p udp -m udp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_dns_in -p tcp -m tcp --sport 1024:65535 --dport 53 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_dns_in -j RETURN
+-A srv_dns_out -p udp -m udp --sport 53 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A srv_dns_out -p tcp -m tcp --sport 53 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A srv_dns_out -j RETURN
+-A srv_git_in -p tcp -m tcp --sport 1024:65535 --dport 9418 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_git_in -j RETURN
+-A srv_git_out -p tcp -m tcp --sport 9418 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A srv_git_out -j RETURN
+-A srv_http_in -p tcp -m tcp --sport 1024:65535 --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_http_in -j RETURN
+-A srv_http_out -p tcp -m tcp --sport 80 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A srv_http_out -j RETURN
+-A srv_https_in -p tcp -m tcp --sport 1024:65535 --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT
+-A srv_https_in -j RETURN
+-A srv_https_out -p tcp -m tcp --sport 443 --dport 1024:65535 -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A srv_https_out -j RETURN
+-A srv_icmp -p icmp -j ACCEPT
+-A srv_icmp -j RETURN
+-A srv_rip -p udp -m udp --sport 520 --dport 520 -j ACCEPT
+-A srv_rip -j RETURN
+-A srv_ssh_in -p tcp -m tcp --dport 2222 -m state --state NEW -m recent --set --name SSH --mask 255.255.255.255 --rsource -j ACCEPT
+-A srv_ssh_in -p tcp -m tcp --dport 2222 -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j LOG --log-prefix "BLOCKED IP DROP SSH"
+-A srv_ssh_in -p tcp -m tcp --dport 2222 -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j DROP
+-A srv_ssh_in -p tcp -m tcp --sport 1024:65535 --dport 2222 -m state --state ESTABLISHED -j ACCEPT
+-A srv_ssh_in -p tcp -m tcp --dport 22 -m state --state NEW -m recent --set --name SSH --mask 255.255.255.255 --rsource -j ACCEPT
+-A srv_ssh_in -p tcp -m tcp --dport 22 -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j LOG --log-prefix "BLOCKED IP DROP SSH"
+-A srv_ssh_in -p tcp -m tcp --dport 22 -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j DROP
+-A srv_ssh_in -p tcp -m tcp --sport 1024:65535 --dport 22 -m state --state ESTABLISHED -j ACCEPT
+-A srv_ssh_in -j RETURN
+-A srv_ssh_out -p tcp -m tcp --sport 2222 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A srv_ssh_out -p tcp -m tcp --sport 22 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
+-A srv_ssh_out -j RETURN
+COMMIT
+# Completed on Sat Jun  8 19:50:25 2019