70
Packages in network---firewall category
arptables
conntrack
conntrackd
ebtables
ebtables-utils
fwknop
fwknopd
ip6tables
ip6tables-extra
ip6tables-mod-nat
iptables
iptables-mod-account
iptables-mod-chaos
iptables-mod-checksum
iptables-mod-cluster
iptables-mod-clusterip
iptables-mod-condition
iptables-mod-conntrack-extra
...
iptables-mod-delude
iptables-mod-dhcpmac
iptables-mod-dnetmap
iptables-mod-extra
iptables-mod-filter
iptables-mod-fuzzy
iptables-mod-geoip
iptables-mod-hashlimit
iptables-mod-iface
iptables-mod-ipmark
iptables-mod-ipopt
iptables-mod-ipp2p
iptables-mod-iprange
iptables-mod-ipsec
iptables-mod-ipv4options
iptables-mod-led
iptables-mod-length2
iptables-mod-logmark
...
iptables-mod-lscan
iptables-mod-lua
iptables-mod-nat-extra
iptables-mod-nflog
iptables-mod-nfqueue
iptables-mod-physdev
iptables-mod-psd
iptables-mod-quota2
iptables-mod-rpfilter
iptables-mod-sysrq
iptables-mod-tarpit
iptables-mod-tee
iptables-mod-tproxy
iptables-mod-trace
iptables-mod-u32
iptables-mod-ulog
iptaccount
iptgeoip
...
libip4tc2
libip6tc2
libiptc0
libxtables-nft12
libxtables12
miniupnpc
miniupnpd
natpmpc
nftables
shorewall
shorewall-core
shorewall-lite
shorewall6
shorewall6-lite
snort
snort3