Logo

Session Report

Summary:
Test run at: 2017-08-11 21:29:47 GMT
Client Prefix (v4): 121.75.23.x/24
Client AS (v4): 9500 (VODAFONE-TRANSIT-AS)
IPv4 Probes: 120
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
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 (121.75.23.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
121.75.23.x/24/319500natblock
121.75.23.x/24/309500natblock
121.75.23.x/24/299500natblock
121.75.23.x/24/289500natblock
121.75.23.x/24/279500natblock
121.75.23.x/24/269500natblock
121.75.23.x/24/259500natblock
121.75.23.x/24/249500natblock
121.75.22.x/24/239500natblock
121.75.21.x/24/229500natblock
121.75.19.x/24/219500natblock
121.75.31.x/24/209500natblock
121.75.7.x/24/199500natblock
121.75.55.x/24/189500natblock
121.75.87.x/24/179500natblock
121.75.151.x/24/169500natblock
121.74.23.x/24/159500natblock
121.73.23.x/24/144768natblock
121.79.23.x/24/134826natblock
121.67.23.x/24/123786natblock
121.91.23.x/24/1138484natblock
121.107.23.x/24/102516natblock
121.11.23.x/24/94134natblock
121.203.23.x/24/817924natblock

Meaning of status in Received column:

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