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Session Report

Summary:
Test run at: 2021-07-30 14:44:12 GMT
Client Prefix (v4): 177.128.184.x/24
Client AS (v4): 28587
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /9

Meaning of result status in column:

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.

Warnings:

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 (177.128.184.x/24) can spoof 8388607 neighboring addresses (within your /9 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.128.184.x/24/3128587natblock
177.128.184.x/24/3028587natblock
177.128.184.x/24/2928587natblock
177.128.184.x/24/2828587yes
177.128.184.x/24/2728587natblock
177.128.184.x/24/2628587natblock
177.128.184.x/24/2528587natblock
177.128.184.x/24/2428587natblock
177.128.185.x/24/2328587natblock
177.128.186.x/24/2228587natblock
177.128.188.x/24/2128587natblock
177.128.176.x/24/20262377yes
177.128.168.x/24/19262376natblock
177.128.152.x/24/1852744natblock
177.128.248.x/24/17262777natblock
177.128.56.x/24/1652638natblock
177.129.184.x/24/15262566natblock
177.130.184.x/24/1428202natblock
177.132.184.x/24/1318881natblock
177.136.184.x/24/12263596natblock
177.144.184.x/24/1127699natblock
177.160.184.x/24/1026599natblock
177.192.184.x/24/928573yes
177.0.184.x/24/88167natblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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 10 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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