Until I can figure out this nameserver thing, don't track dns requests to keep conntrack tables not full
This commit is contained in:
Kevin Fenzi
parent
7f5d1823dc
commit
bca365bbf4
2 changed files with 248 additions and 0 deletions
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@ -0,0 +1,124 @@
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# {{ ansible_managed }}
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*filter
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:INPUT ACCEPT [0:0]
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:FORWARD ACCEPT [0:0]
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:OUTPUT ACCEPT [0:0]
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# allow ping and traceroute
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-A INPUT -p icmp -j ACCEPT
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# localhost is fine
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-A INPUT -i lo -j ACCEPT
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# Established connections allowed
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-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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-A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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# if the blocked_ips is defined - drop them
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{% if blocked_ips is defined %}
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{% for ip in blocked_ips %}
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-A INPUT -s {{ ip }} -j DROP
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{% endfor %}
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{% endif %}
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# allow ssh - always
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-A INPUT -m conntrack --ctstate NEW -m tcp -p tcp --dport 22 -j ACCEPT
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# for nrpe - allow it from nocs
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-A INPUT -p tcp -m tcp --dport 5666 -s 192.168.1.10 -j ACCEPT
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# FIXME - this is the global nat-ip and we need the noc01-specific ip
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-A INPUT -p tcp -m tcp --dport 5666 -s 209.132.181.102 -j ACCEPT
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-A INPUT -p tcp -m tcp --dport 5666 -s 209.132.181.35 -j ACCEPT
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-A INPUT -p tcp -m tcp --dport 5666 -s 10.5.126.41 -j ACCEPT
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{% if env != 'staging' and datacenter == 'phx2' and inventory_hostname not in groups['staging-friendly'] %}
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#
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# In the phx2 datacenter, both production and staging hosts are in the same
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# subnet/vlan. We want production hosts to reject connectons from staging group hosts
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# to prevent them from interfering with production. There are however a few hosts in
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# production we have marked 'staging-friendly' that we do allow staging to talk to for
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# mostly read-only data they need.
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#
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{% for host in groups['staging']|sort %}
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{% if 'eth0_ip' in hostvars[host] %}# {{ host }}
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-A INPUT -s {{ hostvars[host]['eth0_ip'] }} -j REJECT --reject-with icmp-host-prohibited
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{% else %}# {{ host }} has no 'eth0_ip' listed
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{% endif %}
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{% endfor %}
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{% endif %}
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{% if ansible_domain == 'qa.fedoraproject.org' and inventory_hostname not in groups['qa-isolated'] %}
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#
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# In the qa.fedoraproject.org network, we want machines not in the qa-isolated group
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# to block all access from that group. This is to protect them from any possible attack
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# vectors from qa-isolated machines.
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#
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# Here we hard code beaker client nodes. They are managed by beaker and are not in ansible.
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-A INPUT -s 10.5.131.31 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.32 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.33 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.34 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.35 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.36 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.37 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.38 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.39 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.40 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.41 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.42 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.43 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.44 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.45 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.46 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.47 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.48 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.49 -j REJECT --reject-with icmp-host-prohibited
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{% for host in groups['qa-isolated']|sort %}
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{% if 'eth0_ip' in hostvars[host] %}# {{ host }}
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-A INPUT -s {{ hostvars[host]['eth0_ip'] }} -j REJECT --reject-with icmp-host-prohibited
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{% else %}# {{ host }} has no 'eth0_ip' listed
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{% endif %}
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{% endfor %}
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{% endif %}
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# if the host declares a fedmsg-enabled wsgi app, open ports for it
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{% if wsgi_fedmsg_service is defined %}
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{% for i in range(wsgi_procs * wsgi_threads) %}
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-A INPUT -p tcp -m tcp --dport 30{{ '%02d' % i }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if the host/group defines incoming tcp_ports - allow them
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{% if tcp_ports is defined %}
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{% for port in tcp_ports %}
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-A INPUT -p tcp -m tcp --dport {{ port }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if the host/group defines incoming udp_ports - allow them
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{% if udp_ports is defined %}
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{% for port in udp_ports %}
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-A INPUT -p udp -m udp --dport {{ port }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if there are custom rules - put them in as-is
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{% if custom_rules is defined %}
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{% for rule in custom_rules %}
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{{ rule }}
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{% endfor %}
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{% endif %}
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# otherwise kick everything out
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-A INPUT -j REJECT --reject-with icmp-host-prohibited
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-A FORWARD -j REJECT --reject-with icmp-host-prohibited
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COMMIT
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*raw
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:PREROUTING ACCEPT [0:0]
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:OUTPUT ACCEPT [0:0]
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#
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# We don't want to track all the dns query connections, there's too many.
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#
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-A PREROUTING -p udp -m udp --dport 53 -j NOTRACK
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-A OUTPUT -p udp -m udp --sport 53 -j NOTRACK
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COMMIT
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@ -0,0 +1,124 @@
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# {{ ansible_managed }}
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*filter
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:INPUT ACCEPT [0:0]
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:FORWARD ACCEPT [0:0]
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:OUTPUT ACCEPT [0:0]
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# allow ping and traceroute
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-A INPUT -p icmp -j ACCEPT
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# localhost is fine
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-A INPUT -i lo -j ACCEPT
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# Established connections allowed
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-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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-A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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# if the blocked_ips is defined - drop them
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{% if blocked_ips is defined %}
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{% for ip in blocked_ips %}
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-A INPUT -s {{ ip }} -j DROP
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{% endfor %}
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{% endif %}
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# allow ssh - always
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-A INPUT -m conntrack --ctstate NEW -m tcp -p tcp --dport 22 -j ACCEPT
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# for nrpe - allow it from nocs
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-A INPUT -p tcp -m tcp --dport 5666 -s 192.168.1.10 -j ACCEPT
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# FIXME - this is the global nat-ip and we need the noc01-specific ip
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-A INPUT -p tcp -m tcp --dport 5666 -s 209.132.181.102 -j ACCEPT
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-A INPUT -p tcp -m tcp --dport 5666 -s 209.132.181.35 -j ACCEPT
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-A INPUT -p tcp -m tcp --dport 5666 -s 10.5.126.41 -j ACCEPT
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{% if env != 'staging' and datacenter == 'phx2' and inventory_hostname not in groups['staging-friendly'] %}
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#
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# In the phx2 datacenter, both production and staging hosts are in the same
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# subnet/vlan. We want production hosts to reject connectons from staging group hosts
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# to prevent them from interfering with production. There are however a few hosts in
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# production we have marked 'staging-friendly' that we do allow staging to talk to for
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# mostly read-only data they need.
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#
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{% for host in groups['staging']|sort %}
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{% if 'eth0_ip' in hostvars[host] %}# {{ host }}
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-A INPUT -s {{ hostvars[host]['eth0_ip'] }} -j REJECT --reject-with icmp-host-prohibited
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{% else %}# {{ host }} has no 'eth0_ip' listed
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{% endif %}
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{% endfor %}
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{% endif %}
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{% if ansible_domain == 'qa.fedoraproject.org' and inventory_hostname not in groups['qa-isolated'] %}
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#
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# In the qa.fedoraproject.org network, we want machines not in the qa-isolated group
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# to block all access from that group. This is to protect them from any possible attack
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# vectors from qa-isolated machines.
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#
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# Here we hard code beaker client nodes. They are managed by beaker and are not in ansible.
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-A INPUT -s 10.5.131.31 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.32 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.33 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.34 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.35 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.36 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.37 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.38 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.39 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.40 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.41 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.42 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.43 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.44 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.45 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.46 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.47 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.48 -j REJECT --reject-with icmp-host-prohibited
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-A INPUT -s 10.5.131.49 -j REJECT --reject-with icmp-host-prohibited
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{% for host in groups['qa-isolated']|sort %}
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{% if 'eth0_ip' in hostvars[host] %}# {{ host }}
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-A INPUT -s {{ hostvars[host]['eth0_ip'] }} -j REJECT --reject-with icmp-host-prohibited
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{% else %}# {{ host }} has no 'eth0_ip' listed
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{% endif %}
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{% endfor %}
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{% endif %}
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# if the host declares a fedmsg-enabled wsgi app, open ports for it
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{% if wsgi_fedmsg_service is defined %}
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{% for i in range(wsgi_procs * wsgi_threads) %}
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-A INPUT -p tcp -m tcp --dport 30{{ '%02d' % i }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if the host/group defines incoming tcp_ports - allow them
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{% if tcp_ports is defined %}
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{% for port in tcp_ports %}
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-A INPUT -p tcp -m tcp --dport {{ port }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if the host/group defines incoming udp_ports - allow them
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{% if udp_ports is defined %}
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{% for port in udp_ports %}
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-A INPUT -p udp -m udp --dport {{ port }} -j ACCEPT
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{% endfor %}
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{% endif %}
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# if there are custom rules - put them in as-is
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{% if custom_rules is defined %}
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{% for rule in custom_rules %}
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{{ rule }}
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{% endfor %}
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{% endif %}
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# otherwise kick everything out
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-A INPUT -j REJECT --reject-with icmp-host-prohibited
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-A FORWARD -j REJECT --reject-with icmp-host-prohibited
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COMMIT
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*raw
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:PREROUTING ACCEPT [0:0]
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:OUTPUT ACCEPT [0:0]
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#
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# We don't want to track all the dns query connections, there's too many.
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#
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-A PREROUTING -p udp -m udp --dport 53 -j NOTRACK
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-A OUTPUT -p udp -m udp --sport 53 -j NOTRACK
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COMMIT
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Reference in a new issue