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Session Report

Summary:
Test run at: 2019-09-04 23:32:07 GMT
Client Prefix (v4): 177.155.135.x/24
Client AS (v4): 53062
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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.

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 (177.155.135.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.155.135.x/24/3153062yes
177.155.135.x/24/3053062yes
177.155.135.x/24/2953062yes
177.155.135.x/24/2853062yes
177.155.135.x/24/2753062yes
177.155.135.x/24/2653062yes
177.155.135.x/24/2553062yes
177.155.135.x/24/2453062yes
177.155.134.x/24/2353062yes
177.155.133.x/24/2253062yes
177.155.131.x/24/2153062yes
177.155.143.x/24/2053062yes
177.155.151.x/24/19263622yes
177.155.167.x/24/1852752yes
177.155.199.x/24/17262828yes
177.155.7.x/24/16UNROUTEDnatblock
177.154.135.x/24/1516397yes
177.153.135.x/24/1427715yes
177.159.135.x/24/1318881yes
177.147.135.x/24/1226599yes
177.139.135.x/24/1127699yes
177.187.135.x/24/1026615yes
177.219.135.x/24/926615yes
177.27.135.x/24/826599yes

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 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.
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