Back to Home Computer Security
Check for Outages (Down)

Who is my ISP?
  http://ipinfo.io
  https://www.whoismyisp.org

Check IP Address(es)
  https://www.dslreports.com/whatismyip?
  http://ip6tools.com/check_client.php
  http://www.test-ipv6.com
  http://bgp.he.net

Test Bandwidth
  https://www.dslreports.com/speedtest
  https://fast.com
  http://speedsmart.net/?ipinfo

Test Firewall
  https://www.grc.com/x/ne.dll?bh0bkyd2
  https://pentest-tools.com/network-vulnerability-scanning/tcp-port-scanner-online-nmap
  http://nmap-online.com/

Test DNS (Domain Name System converts names to IP adresses)
  http://www.simpledns.com/lookup-dg.aspx
  https://www.grc.com/dns/dns.htm
  http://www.dnssy.com/
  https://www.dnsleaktest.com

Check Browser
  https://httpbin.org
  https://isc.sans.edu/tools/browserinfo.html
  https://centralops.net/asp/co/BrowserMirror.vbs.asp
  https://www.grc.com/x/ne.dll?bh0bkyd2
  https://panopticlick.eff.org

Check Internet BackBone and Infrastructure Status
  https://www.keynote.com/resources/internet-health-report/
  http://www.internettrafficreport.com
  https://www.akamai.com/us/en/solutions/intelligent-platform/visualizing-akamai/real-time-web-monitor.jsp
  http://www.digitalattackmap.com

Check Email Address Validity
  http://centralops.net/co/EmailDossier.aspx
  http://www.ip-address.org/verify/email-checker.php

IP Address from email (not gmail) header
  http://www.iptrackeronline.com/email-header-analysis.php
  http://whatismyipaddress.com/trace-email

Online Tools
  http://www.dslreports.com/tools
  http://www.tcpiputils.com/tools#network
  http://bgp.he.net
  https://isc.sans.edu/tools/

More Online Tools
  https://traceroute-online.com
  https://www.ssllabs.com/ssltest/
  https://major.io/icanhazip-com-faq/
  https://isc.sans.edu/ipinfo.html
  http://ipinfo.io
  https://whoer.net

Internet Monitoring
  https://isc.sans.edu/links.html
  https://www.dshield.org/links.html
  http://www.cidr-report.org/as2.0/
  http://as-rank.caida.org

Network Testing
nmap
  https://nmap.org
  https://nmap.org/book/man.html
  https://nmap.org/book/toc.html
  https://nmap.org/book/man-port-scanning-techniques.html
  https://nmap.org/docs/nmap-mindmap.pdf
  http://www.networkuptime.com/nmap/index.shtml

ncat 
  https://nmap.org/ncat/guide/index.html
  https://nmap.org/book/ncat-man.html

nping
  https://nmap.org/nping/
  https://nmap.org/book/nping-man.html
  https://nmap.org/book/nping-man-echo-mode.html


sam.wormley@gmail.com