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Session Report

Summary:
Test run at: 2020-08-25 16:13:02 GMT
Client Prefix (v4): 185.237.98.x/24
Client AS (v4): 210329 (CloudWebManage-UK-1)
IPv4 Probes: 75
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 Adjacent Netblock Testing:

Your host (185.237.98.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.237.98.x/24/31210329yes
185.237.98.x/24/30210329yes
185.237.98.x/24/29210329yes
185.237.98.x/24/28210329yes
185.237.98.x/24/27210329yes
185.237.98.x/24/26210329yes
185.237.98.x/24/25210329yes
185.237.98.x/24/24210329yes
185.237.99.x/24/23210329yes
185.237.96.x/24/22204548yes
185.237.102.x/24/2131404yes
185.237.106.x/24/2056421yes
185.237.114.x/24/19UNROUTEDnatblock
185.237.66.x/24/1815817yes
185.237.34.x/24/1734154yes
185.237.226.x/24/16205692yes
185.236.98.x/24/1543372yes
185.239.98.x/24/1421309yes
185.233.98.x/24/13204978yes
185.229.98.x/24/1229119yes
185.253.98.x/24/119009yes
185.205.98.x/24/10199081yes
185.173.98.x/24/950628yes
185.109.98.x/24/88426yes

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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