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Session Report

Summary:
Test run at: 2022-07-13 14:41:26 GMT
Client Prefix (v4): 178.220.225.x/24
Client AS (v4): 8400 (TELEKOM-AS)
IPv4 Probes: 60
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 (178.220.225.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
178.220.225.x/24/318400yes
178.220.225.x/24/308400yes
178.220.225.x/24/298400yes
178.220.225.x/24/288400yes
178.220.225.x/24/278400yes
178.220.225.x/24/268400yes
178.220.225.x/24/258400yes
178.220.225.x/24/248400yes
178.220.224.x/24/238400yes
178.220.227.x/24/228400yes
178.220.229.x/24/218400yes
178.220.233.x/24/208400yes
178.220.241.x/24/198400yes
178.220.193.x/24/188400yes
178.220.161.x/24/178400yes
178.220.97.x/24/168400yes
178.221.225.x/24/158400yes
178.222.225.x/24/148400yes
178.216.225.x/24/1348964yes
178.212.225.x/24/12207046yes
178.204.225.x/24/1128840yes
178.252.225.x/24/1024689yes
178.156.225.x/24/9UNROUTEDnatblock
178.92.225.x/24/86849yes

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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