Logo

Session Report

Summary:
Test run at: 2021-12-01 13:12:51 GMT
Client Prefix (v4): 128.153.49.x/24
Client AS (v4): 92 (CLARKSON-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /16
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 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (128.153.49.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
128.153.49.x/24/3192yes
128.153.49.x/24/3092yes
128.153.49.x/24/2992yes
128.153.49.x/24/2892yes
128.153.49.x/24/2792yes
128.153.49.x/24/2692yes
128.153.49.x/24/2592yes
128.153.49.x/24/2492yes
128.153.48.x/24/2392yes
128.153.51.x/24/2292yes
128.153.53.x/24/2192yes
128.153.57.x/24/2092yes
128.153.33.x/24/1992yes
128.153.17.x/24/1892yes
128.153.113.x/24/1792yes
128.153.177.x/24/1692yes
128.152.49.x/24/15UNROUTEDno
128.155.49.x/24/14270no
128.157.49.x/24/13270no
128.145.49.x/24/12174no
128.137.49.x/24/11UNROUTEDno
128.185.49.x/24/10UNROUTEDno
128.217.49.x/24/91843no
128.25.49.x/24/8749no

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 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.
Last Modified