# Servers
net-misc/openssh
net-vpn/openvpn
net-dns/dnsmasq
mail-mta/ssmtp
mail-filter/procmail

# Traffic Monitoring
net-analyzer/nethogs
net-analyzer/iptraf-ng

# Availability & Structure
net-analyzer/nmap
net-analyzer/fping
net-analyzer/hping
net-misc/telnet-bsd

net-analyzer/tcptraceroute
net-analyzer/traceroute

# Sniffers
net-analyzer/ngrep
net-analyzer/tcpdump
net-analyzer/sniffit
net-analyzer/wireshark

net-misc/socat