Automated Firewalls with Mason. William Stearns SANS Instructor, proctor, and network administrator [email protected] http://www.stearns.org/mason/. Getting underway. Room monitors Evaluation forms Questions at any point Goals Basics of Linux firewalling Learning process Live demo.
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Apr 30 21:04:10 sparrow kernel: IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=73 TOS=0x00 PREC=0x00 TTL=64 ID=11339 DF PROTO=UDP SPT=33272 DPT=53 LEN=53
/sbin/iptables -A OUTPUT -o lo -p udp -s localhost/32 - -sport 1024:65535 -d localhost/32 - -dport domain -j ACCEPT #domain/udp (O)
We'll switch over to a Linux laptop for the demo and rejoin here afterwards.