Hardening Linux

F

fail keyword, 9

failover battery backups , 13

Financial Services Modernization Act, 367

find command, 138

firewalls

checking for existing rules, 48-55

configuring, 61-78

identifying protective firewall needs, 60-78

interface access policy guidelines, 61

protective strategies, 60-61

Red Hat Linux firewall configuration, 66-67

rules, 57-60

simple Linux firewall configuration, 67-78

stateless and stateful, 59-60

SUSE Linux firewall configuration, 62-65

SUSE SLES 8.0 firewall rules for dual interface configuration, 69-78

FreeS/WAN, 229-230

configuring, 231-233

establishing a VPN, 233-235

generating authentication keys for gateways, 231

installing, 230-231

FTP, replacing with sftp, 221

functionality, restricting, 186-187