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Session Report

Summary:
Test run at: 2021-08-31 02:21:48 GMT
Client Prefix (v4): 219.243.193.x/24
Client AS (v4): 4538 (ERX-CERNET-BKB)
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 /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.
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 (219.243.193.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
219.243.193.x/24/314538yes
219.243.193.x/24/304538yes
219.243.193.x/24/294538yes
219.243.193.x/24/284538yes
219.243.193.x/24/274538yes
219.243.193.x/24/264538yes
219.243.193.x/24/254538yes
219.243.193.x/24/244538yes
219.243.192.x/24/234538yes
219.243.195.x/24/224538yes
219.243.197.x/24/214538yes
219.243.201.x/24/2023910yes
219.243.209.x/24/1923910yes
219.243.225.x/24/184538yes
219.243.129.x/24/174538yes
219.243.65.x/24/164538yes
219.242.193.x/24/154538yes
219.241.193.x/24/149318yes
219.247.193.x/24/134538yes
219.251.193.x/24/129318yes
219.227.193.x/24/114538yes
219.211.193.x/24/1017676yes
219.179.193.x/24/917676yes
219.115.193.x/24/89617yes

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)

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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