Linux Firewalls: Attack Detection and Response with iptables, psad, and fwsnort
Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Z] LAND attacks 2nd LANs 2nd DNS setup 2nd 3rd choke DMZ configuration 2nd DMZ name server gateway configuration 2nd internal LANs 2nd large or less trusted LANs 2nd selective internal access subnetting to create multiple networks 2nd 3rd multiple LANs 2nd 3rd 4th 5th public web servers traffic forwarding 2nd masquerading 2nd 3rd standard NAT 2nd trusted home LANs 2nd LAN access to gateway firewalls LAN access to other LANs 2nd web proxies 2nd length filter table match limit filter table match extensions 2nd limited broadcast addresses limiting incoming packets link local network addresses Linux Firewall Administration Program [See iptables] Linux kernels [See kernels] Linux vendors, reporting incidents to Linux VPN products FreeS/WAN Openswan PoPToP VPND (Virtual Private Network Daemon) VTUN (Virtual Tunnel) listing firewall rules 2nd listing formats filter table iptables -n L INPUT 2nd iptables -v L INPUT 2nd iptables L INPUT 2nd 3rd mangle table 2nd nat table 2nd local client traffic over TCP 2nd 3rd 4th over UDP 2nd local destination address filtering local destination port filtering local port redirection 2nd local server traffic 2nd local services, protecting local source address filtering local source port filtering local_dhcp_client_request chain 2nd 3rd local_dns_client_request chain 2nd local_dns_server_query chain 2nd 3rd local_tcp_server_response chain 2nd 3rd local_udp_client_request chain LOG target extensions log-tcp-state chain 2nd logging dropped packets incoming packets 2nd 3rd optimized example 2nd 3rd outgoing packets firewall log messages 2nd 3rd 4th 5th duplicating TCP example 2nd UDP example 2nd GrSec options intrusion detection 2nd log monitoring 2nd 3rd matching packets syslog configuration 2nd 3rd 4th tips for login failures, monitoring 2nd lookups DNS lookups as clients 2nd DNS lookups as forwarding servers 2nd loopback addresses 2nd 3rd loopback interfaces, enabling 2nd |
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