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Session Report

Summary:
Test run at: 2020-10-11 00:05:58 GMT
Client Prefix (v4): 45.56.161.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
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 Adjacent Netblock Testing:

Your host (45.56.161.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.56.161.x/24/31174natblock
45.56.161.x/24/30174natblock
45.56.161.x/24/29174natblock
45.56.161.x/24/28174natblock
45.56.161.x/24/27174natblock
45.56.161.x/24/26174natblock
45.56.161.x/24/25174natblock
45.56.161.x/24/24174natblock
45.56.160.x/24/23174natblock
45.56.163.x/24/228100natblock
45.56.165.x/24/218100natblock
45.56.169.x/24/20UNROUTEDnatblock
45.56.177.x/24/19UNROUTEDnatblock
45.56.129.x/24/18UNROUTEDnatblock
45.56.225.x/24/17203101natblock
45.56.33.x/24/1616591natblock
45.57.161.x/24/1555286natblock
45.58.161.x/24/1446844natblock
45.60.161.x/24/1319551natblock
45.48.161.x/24/1220001natblock
45.40.161.x/24/1126496natblock
45.24.161.x/24/107018natblock
45.120.161.x/24/9132116natblock
45.184.161.x/24/8269383natblock

Meaning of status in Received column:

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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