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Session Report

Summary:
Test run at: 2017-07-10 12:34:51 GMT
Client Prefix (v4): 199.241.247.x/24
Client AS (v4): 22742 (CT-EDU-NET)
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 /26
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 (199.241.247.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
199.241.247.x/24/3122742yes
199.241.247.x/24/3022742yes
199.241.247.x/24/2922742yes
199.241.247.x/24/2822742yes
199.241.247.x/24/2722742yes
199.241.247.x/24/2622742yes
199.241.247.x/24/2522742no
199.241.247.x/24/2422742no
199.241.246.x/24/2322742no
199.241.245.x/24/2222742no
199.241.243.x/24/2111597no
199.241.255.x/24/2025956no
199.241.231.x/24/19209no
199.241.215.x/24/1822646no
199.241.183.x/24/1722820no
199.241.119.x/24/1630047no
199.240.247.x/24/152914no
199.243.247.x/24/14577no
199.245.247.x/24/13UNROUTEDno
199.249.247.x/24/12UNROUTEDno
199.225.247.x/24/11UNROUTEDno
199.209.247.x/24/10768no
199.177.247.x/24/9UNROUTEDno
199.113.247.x/24/8721no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

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.
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