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[caclmgrd] Filter DHCP packets based on dest port only (#4995)

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Joe LeVeque 2020-07-17 11:16:19 -07:00 committed by GitHub
parent 458b4aef48
commit d6925499f1
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1 changed files with 4 additions and 4 deletions
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files/image_config/caclmgrd/caclmgrd
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@ -245,12 +245,12 @@ class ControlPlaneAclManager(object):
iptables_cmds.append("ip6tables -A INPUT -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT")
# Add iptables/ip6tables commands to allow all incoming IPv4 DHCP packets
iptables_cmds.append("iptables -A INPUT -p udp --dport 67:68 --sport 67:68 -j ACCEPT")
iptables_cmds.append("ip6tables -A INPUT -p udp --dport 67:68 --sport 67:68 -j ACCEPT")
iptables_cmds.append("iptables -A INPUT -p udp --dport 67:68 -j ACCEPT")
iptables_cmds.append("ip6tables -A INPUT -p udp --dport 67:68 -j ACCEPT")
# Add iptables/ip6tables commands to allow all incoming IPv6 DHCP packets
iptables_cmds.append("iptables -A INPUT -p udp --dport 546:547 --sport 546:547 -j ACCEPT")
iptables_cmds.append("ip6tables -A INPUT -p udp --dport 546:547 --sport 546:547 -j ACCEPT")
iptables_cmds.append("iptables -A INPUT -p udp --dport 546:547 -j ACCEPT")
iptables_cmds.append("ip6tables -A INPUT -p udp --dport 546:547 -j ACCEPT")
# Add iptables/ip6tables commands to allow all incoming BGP traffic
# TODO: Determine BGP ACLs based on configured device sessions, and remove this blanket acceptance