Logo

Session Report

Summary:
Test run at: 2017-09-22 21:07:51 GMT
Client Prefix (v4): 142.232.127.x/24
Client AS (v4): 4476 (BCIT)
IPv4 Probes: 117
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /17
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (142.232.127.x/24) can spoof 32767 neighboring addresses (within your /17 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
142.232.127.x/24/314476natblock
142.232.127.x/24/304476natblock
142.232.127.x/24/294476natblock
142.232.127.x/24/284476natblock
142.232.127.x/24/274476natblock
142.232.127.x/24/264476natblock
142.232.127.x/24/254476natblock
142.232.127.x/24/244476natblock
142.232.126.x/24/234476natblock
142.232.125.x/24/224476natblock
142.232.123.x/24/214476natblock
142.232.119.x/24/204476natblock
142.232.111.x/24/194476natblock
142.232.95.x/24/184476natblock
142.232.63.x/24/174476yes
142.232.255.x/24/164476natblock
142.233.127.x/24/15UNROUTEDnatblock
142.234.127.x/24/1415003natblock
142.236.127.x/24/132653natblock
142.224.127.x/24/12UNROUTEDnatblock
142.248.127.x/24/11UNROUTEDnatblock
142.200.127.x/24/106327natblock
142.168.127.x/24/9UNROUTEDnatblock
142.104.127.x/24/816462natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
Last Modified