Logo

Session Report

Summary:
Test run at: 2022-08-05 18:08:25 GMT
Client Prefix (v4): 162.217.20.x/24
Client AS (v4): 25787 (ROWE-NETWORKS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /22
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 (162.217.20.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
162.217.20.x/24/3125787yes
162.217.20.x/24/3025787yes
162.217.20.x/24/2925787yes
162.217.20.x/24/2825787yes
162.217.20.x/24/2725787yes
162.217.20.x/24/2625787yes
162.217.20.x/24/2525787yes
162.217.20.x/24/2425787yes
162.217.21.x/24/2325787yes
162.217.22.x/24/2225787yes
162.217.16.x/24/2162539natblock
162.217.28.x/24/20UNROUTEDnatblock
162.217.4.x/24/1946618natblock
162.217.52.x/24/1829886natblock
162.217.84.x/24/1721554natblock
162.217.148.x/24/1613984natblock
162.216.20.x/24/15UNROUTEDnatblock
162.219.20.x/24/1413415natblock
162.221.20.x/24/1311168natblock
162.209.20.x/24/1219994natblock
162.201.20.x/24/117018natblock
162.249.20.x/24/10UNROUTEDnatblock
162.153.20.x/24/910796natblock
162.89.20.x/24/853368natblock

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 able to spoof routable, non-adjacent source addresses through the first 3 IP hop(s).
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