jemacom

What is a blockchain?

• Distributed ledger system; for tracking the transfer of tokens (currency, data of any type).
• A cross between economics, cryptography, and the internet.
  • Side note- if you ever wanted a financial incentive to get involved in cryptography, this is it.
• A blockchain is literally a chain of blocks, where each block contains a list of transactions that everyone agrees have occurred.
  • Each block builds upon all the ones before it.

jemacom

input {
  syslog {
    type => "pfsense"
  }
}

filter {
  if [type] == "pfsense" {
    grok {
	patterns_dir => "/opt/logstash/patterns"

jemacom

PFSENSE <%{NUMBER:evtid}>%{SYSLOGTIMESTAMP:date} %{PROG:prog}: %{GREEDYDATA:msg}
 
LOG_DATA (%{INT:rule}),(%{INT:sub_rule}),,(%{INT:tracker}),(%{WORD:iface}),(%{WORD:reason}),(%{WORD:action}),(%{WORD:direction}),(%{INT:ip_ver}),
 
IP_SPECIFIC_DATA (%{IPv4_SPECIFIC_DATA}|%{IPv6_SPECIFIC_DATA})
 
IPv4_SPECIFIC_DATA (%{BASE16NUM:tos}),,(%{INT:ttl}),(%{INT:id}),(%{INT:offset}),(%{WORD:flags}),(%{INT:proto_id}),(%{WORD:proto}),
 
IPv6_SPECIFIC_DATA (%{BASE16NUM:class}),(%{DATA:flow_label}),(%{INT:hop_limit}),(%{WORD:proto}),(%{INT:proto_id}),
 

jemacom

input {
  syslog {
    type => "pfsense"
  }
}
 
filter {
  if [type] == "pfsense" {
    grok {
        patterns_dir => "/opt/logstash/patterns"