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Session Report

Summary:
Test run at: 2021-02-27 15:57:46 GMT
Client Prefix (v4): 104.238.45.x/24
Client AS (v4): 36351 (SOFTLAYER)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 Adjacent Netblock Testing:

Your host (104.238.45.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
104.238.45.x/24/3136351yes
104.238.45.x/24/3036351yes
104.238.45.x/24/2936351yes
104.238.45.x/24/2836351yes
104.238.45.x/24/2736351yes
104.238.45.x/24/2636351yes
104.238.45.x/24/2536351yes
104.238.45.x/24/2436351yes
104.238.44.x/24/2360068natblock
104.238.47.x/24/228100natblock
104.238.41.x/24/21UNROUTEDnatblock
104.238.37.x/24/2062874natblock
104.238.61.x/24/198100natblock
104.238.13.x/24/186762natblock
104.238.109.x/24/1726496natblock
104.238.173.x/24/1620473natblock
104.239.45.x/24/1513886natblock
104.236.45.x/24/1414061natblock
104.234.45.x/24/1330407natblock
104.230.45.x/24/1210796natblock
104.254.45.x/24/11UNROUTEDnatblock
104.206.45.x/24/1062904natblock
104.174.45.x/24/920001natblock
104.110.45.x/24/828573natblock

Meaning of status in Received column:

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 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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