ssmithxandClaude Opus 5.5
d968403d33
Both routers: sshd takes keys only (it is reachable from the open TollGate SSID, and on the Pi from the WAN); shared %router-sysctls in router-base (no ICMP redirects taken, loose rp_filter, kptr_restrict, BPF JIT hardened). MT6000: the lab WAN SSH rule is gone; 99_zz-wired-private (a uci-defaults script, after TollGate's setup) moves lan1-lan5 into TollGate's private network (192.168.2.1), leaves br-lan to the open SSID, rejects SSH/telnet/ LuCI from it, trims nodogsplash's router ports, and turns on the private network's DHCP, which TollGate's setup left disabled (PITFALLS #55). The kernel has CONFIG_NFT_FLOW_OFFLOAD; fw4's offloading was measured and is left off -- no gain at line rate, and it would let flows bypass nodogsplash's session enforcement (PITFALLS #56). Deployed as MT6000 generation 6. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
198 lines
4.3 KiB
Plaintext
198 lines
4.3 KiB
Plaintext
# Seeded by Guix on first activation (uci-service-type); owned by UCI after
|
|
# that. firewall4 renders it into nftables table inet fw4; after
|
|
# `uci commit firewall' run `herd reload firewall'.
|
|
#
|
|
# OpenWrt's stock firewall4 config (lan zone trusted, wan zone masqueraded,
|
|
# lan -> wan forwarding), plus one lab rule at the end. Replaces the
|
|
# hand-written files/router.nft.
|
|
|
|
config defaults
|
|
option syn_flood 1
|
|
option input REJECT
|
|
option output ACCEPT
|
|
option forward REJECT
|
|
# Uncomment this line to disable ipv6 rules
|
|
# option disable_ipv6 1
|
|
|
|
config zone
|
|
option name lan
|
|
list network 'lan'
|
|
option input ACCEPT
|
|
option output ACCEPT
|
|
option forward ACCEPT
|
|
|
|
config zone
|
|
option name wan
|
|
list network 'wan'
|
|
list network 'wan6'
|
|
option input REJECT
|
|
option output ACCEPT
|
|
option forward DROP
|
|
option masq 1
|
|
option mtu_fix 1
|
|
|
|
config forwarding
|
|
option src lan
|
|
option dest wan
|
|
|
|
# We need to accept udp packets on port 68,
|
|
# see https://dev.openwrt.org/ticket/4108
|
|
config rule
|
|
option name Allow-DHCP-Renew
|
|
option src wan
|
|
option proto udp
|
|
option dest_port 68
|
|
option target ACCEPT
|
|
option family ipv4
|
|
|
|
# Allow IPv4 ping
|
|
config rule
|
|
option name Allow-Ping
|
|
option src wan
|
|
option proto icmp
|
|
option icmp_type echo-request
|
|
option family ipv4
|
|
option target ACCEPT
|
|
|
|
config rule
|
|
option name Allow-IGMP
|
|
option src wan
|
|
option proto igmp
|
|
option family ipv4
|
|
option target ACCEPT
|
|
|
|
# Allow DHCPv6 replies
|
|
# see https://github.com/openwrt/openwrt/issues/5066
|
|
config rule
|
|
option name Allow-DHCPv6
|
|
option src wan
|
|
option proto udp
|
|
option dest_port 546
|
|
option family ipv6
|
|
option target ACCEPT
|
|
|
|
config rule
|
|
option name Allow-MLD
|
|
option src wan
|
|
option proto icmp
|
|
option src_ip fe80::/10
|
|
list icmp_type '130/0'
|
|
list icmp_type '131/0'
|
|
list icmp_type '132/0'
|
|
list icmp_type '143/0'
|
|
option family ipv6
|
|
option target ACCEPT
|
|
|
|
# Allow essential incoming IPv6 ICMP traffic
|
|
config rule
|
|
option name Allow-ICMPv6-Input
|
|
option src wan
|
|
option proto icmp
|
|
list icmp_type echo-request
|
|
list icmp_type echo-reply
|
|
list icmp_type destination-unreachable
|
|
list icmp_type packet-too-big
|
|
list icmp_type time-exceeded
|
|
list icmp_type bad-header
|
|
list icmp_type unknown-header-type
|
|
list icmp_type router-solicitation
|
|
list icmp_type neighbour-solicitation
|
|
list icmp_type router-advertisement
|
|
list icmp_type neighbour-advertisement
|
|
option limit 1000/sec
|
|
option family ipv6
|
|
option target ACCEPT
|
|
|
|
# Allow essential forwarded IPv6 ICMP traffic
|
|
config rule
|
|
option name Allow-ICMPv6-Forward
|
|
option src wan
|
|
option dest *
|
|
option proto icmp
|
|
list icmp_type echo-request
|
|
list icmp_type echo-reply
|
|
list icmp_type destination-unreachable
|
|
list icmp_type packet-too-big
|
|
list icmp_type time-exceeded
|
|
list icmp_type bad-header
|
|
list icmp_type unknown-header-type
|
|
option limit 1000/sec
|
|
option family ipv6
|
|
option target ACCEPT
|
|
|
|
config rule
|
|
option name Allow-IPSec-ESP
|
|
option src wan
|
|
option dest lan
|
|
option proto esp
|
|
option target ACCEPT
|
|
|
|
config rule
|
|
option name Allow-ISAKMP
|
|
option src wan
|
|
option dest lan
|
|
option dest_port 500
|
|
option proto udp
|
|
option target ACCEPT
|
|
|
|
|
|
### EXAMPLE CONFIG SECTIONS
|
|
# do not allow a specific ip to access wan
|
|
#config rule
|
|
# option src lan
|
|
# option src_ip 192.168.45.2
|
|
# option dest wan
|
|
# option proto tcp
|
|
# option target REJECT
|
|
|
|
# block a specific mac on wan
|
|
#config rule
|
|
# option dest wan
|
|
# option src_mac 00:11:22:33:44:66
|
|
# option target REJECT
|
|
|
|
# block incoming ICMP traffic on a zone
|
|
#config rule
|
|
# option src lan
|
|
# option proto ICMP
|
|
# option target DROP
|
|
|
|
# port redirect port coming in on wan to lan
|
|
#config redirect
|
|
# option src wan
|
|
# option src_dport 80
|
|
# option dest lan
|
|
# option dest_ip 192.168.16.235
|
|
# option dest_port 80
|
|
# option proto tcp
|
|
|
|
# port redirect of remapped ssh port (22001) on wan
|
|
#config redirect
|
|
# option src wan
|
|
# option src_dport 22001
|
|
# option dest lan
|
|
# option dest_port 22
|
|
# option proto tcp
|
|
|
|
### FULL CONFIG SECTIONS
|
|
#config rule
|
|
# option src lan
|
|
# option src_ip 192.168.45.2
|
|
# option src_mac 00:11:22:33:44:55
|
|
# option src_port 80
|
|
# option dest wan
|
|
# option dest_ip 194.25.2.129
|
|
# option dest_port 120
|
|
# option proto tcp
|
|
# option target REJECT
|
|
|
|
#config redirect
|
|
# option src lan
|
|
# option src_ip 192.168.45.2
|
|
# option src_mac 00:11:22:33:44:55
|
|
# option src_port 1024
|
|
# option src_dport 80
|
|
# option dest_ip 194.25.2.129
|
|
# option dest_port 120
|
|
# option proto tcp
|