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Gathering all EC2 Public IPs Recently I needed to automate pulling all public IP addresses across all of the EC2 accounts I have access to. I wrote the following script to deal with that problem. Note: Thank you to Daniel Miessler for the script to pull the IPs. My Script makes that work across . . . → Read More: List all Public IP Addresses Across All of your AWS Accounts After many failed attempts to import Okta logs in to Graylog (using some PowerShell scripts I found online) I decided to take a different approach. Here is what my final Dashboard and view ended up looking like: Prerequisites To ingest Okta logs in to Graylog you will need the following: . . . → Read More: Ingesting Okta logs in to Graylog To perform a bulk whois lookup of a list of IP addresses use the following script: Bulk whois lookup while read ip; do if [ ! -z “$ip” ]; then echo -n “$ip – ” && whois $ip 2>/dev/null grep “Organization” -m 1; fi; done < ip_list.txt Example input (ip_list.txt) 172.217.8.206 172.217.8.203 172.217.8.266 151.101.65.67 Output . . . → Read More: Bulk Lookup Owner of IP Address Code loop through a range of IPs and query McAfee epo on client machines # Loop through IP address 10.0.0.10 – 10.0.0.20 and print out # the computer name and the agent version echo “” > output; for ((i=10;i<=20;i++)) do # -s Silent Curl # -m 1 Wait no longer than 1 second per host . . . → Read More: Querying McAfee ePo on End User Machines Script to backup AlienVault OSSIM master server . . . → Read More: Script to Backup Alienvault OSSIM Master Server Problem You need two diff two files and only output what is unique to file one. text file 1 contains: 1 2 3 4 5 text file 2 contains: 6 7 1 2 3 4 Solution $ awk ‘FNR==NR{a[$0]++;next}!a[$0]’ file1 file2 6 7 Explanation of how the code works: If we’re working on file1, track . . . → Read More: diff two files and output lines not seen in file 2 to kill orphaned httpd processes create a script called killhttpd.sh with the following code #!/bin/bash for pid in `ps -C httpd|sed -e ‘s/^\ \+//g’ | grep httpd|awk ‘{print $1}’` do kill $pid done |
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