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Session Report

Summary:
Test run at: 2020-04-21 11:57:47 GMT
Client Prefix (v4): 177.155.112.x/24
Client AS (v4): 263616
IPv4 Probes: 75
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 (177.155.112.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.155.112.x/24/31263616yes
177.155.112.x/24/30263616yes
177.155.112.x/24/29263616natblock
177.155.112.x/24/28263616yes
177.155.112.x/24/27263616yes
177.155.112.x/24/26263616yes
177.155.112.x/24/25263616natblock
177.155.112.x/24/24263616natblock
177.155.113.x/24/23263616natblock
177.155.114.x/24/22263616natblock
177.155.116.x/24/21263616natblock
177.155.120.x/24/20263616natblock
177.155.96.x/24/1928652natblock
177.155.80.x/24/18263583natblock
177.155.48.x/24/1728615natblock
177.155.240.x/24/1652778natblock
177.154.112.x/24/15262959natblock
177.153.112.x/24/1427715natblock
177.159.112.x/24/1310429natblock
177.147.112.x/24/1226599natblock
177.139.112.x/24/1127699natblock
177.187.112.x/24/1026615natblock
177.219.112.x/24/926615natblock
177.27.112.x/24/826599natblock

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 1 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.
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