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Session Report

Summary:
Test run at: 2020-07-23 14:23:41 GMT
Client Prefix (v4): 187.19.196.x/24
Client AS (v4): 28126
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /26
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 (187.19.196.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.19.196.x/24/3128126yes
187.19.196.x/24/3028126yes
187.19.196.x/24/2928126yes
187.19.196.x/24/2828126yes
187.19.196.x/24/2728126yes
187.19.196.x/24/2628126yes
187.19.196.x/24/2528126no
187.19.196.x/24/2428126no
187.19.197.x/24/2328126no
187.19.198.x/24/2228126no
187.19.192.x/24/2128126no
187.19.204.x/24/2028126no
187.19.212.x/24/1928126no
187.19.228.x/24/1828126no
187.19.132.x/24/1728126no
187.19.68.x/24/16UNROUTEDno
187.18.196.x/24/1528270no
187.17.196.x/24/1428265no
187.23.196.x/24/1328573no
187.27.196.x/24/1222085no
187.3.196.x/24/1128573no
187.51.196.x/24/1010429no
187.83.196.x/24/926615no
187.147.196.x/24/88151no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
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 2 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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