Logo

Session Report

Summary:
Test run at: 2017-08-13 15:10:46 GMT
Client Prefix (v4): 185.13.36.x/24
Client AS (v4): 197922 (FIRSTHEBERG)
IPv4 Probes: 120
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.

IPv4 Adjacent Netblock Testing:

Your host (185.13.36.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.13.36.x/24/31197922yes
185.13.36.x/24/30197922yes
185.13.36.x/24/29197922yes
185.13.36.x/24/28197922yes
185.13.36.x/24/27197922yes
185.13.36.x/24/26197922yes
185.13.36.x/24/25197922yes
185.13.36.x/24/24197922yes
185.13.37.x/24/23197922yes
185.13.38.x/24/22197922yes
185.13.32.x/24/2132181yes
185.13.44.x/24/2042291yes
185.13.52.x/24/192107yes
185.13.4.x/24/1842331yes
185.13.100.x/24/17196766yes
185.13.164.x/24/165602yes
185.12.36.x/24/15UNROUTEDno
185.15.36.x/24/14203451yes
185.9.36.x/24/13199608yes
185.5.36.x/24/1230938yes
185.29.36.x/24/1134783yes
185.45.36.x/24/10199791yes
185.77.36.x/24/96762yes
185.141.36.x/24/848356yes

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
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 11 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.
Last Modified