Logo

Session Report

Summary:
Test run at: 2020-07-13 08:27:26 GMT
Client Prefix (v4): 159.8.124.x/24
Client AS (v4): 36351 (SOFTLAYER)
IPv4 Probes: 75
Client Prefix (v6): 2a03:8180:13xx::/40
Client AS (v6): 36351 (SOFTLAYER)
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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 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 (159.8.124.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
159.8.124.x/24/3136351natblock
159.8.124.x/24/3036351natblock
159.8.124.x/24/2936351natblock
159.8.124.x/24/2836351natblock
159.8.124.x/24/2736351natblock
159.8.124.x/24/2636351natblock
159.8.124.x/24/2536351natblock
159.8.124.x/24/2436351natblock
159.8.125.x/24/2336351natblock
159.8.126.x/24/2236351natblock
159.8.120.x/24/2136351natblock
159.8.116.x/24/2036351natblock
159.8.108.x/24/1936351natblock
159.8.92.x/24/1836351natblock
159.8.60.x/24/1736351natblock
159.8.252.x/24/1636351natblock
159.9.124.x/24/15UNROUTEDnatblock
159.10.124.x/24/1416983natblock
159.12.124.x/24/13UNROUTEDnatblock
159.0.124.x/24/1225019natblock
159.24.124.x/24/11UNROUTEDnatblock
159.40.124.x/24/10UNROUTEDnatblock
159.72.124.x/24/91257natblock
159.136.124.x/24/811517natblock

Meaning of status in Received column:

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.
IPv6 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.

  

  
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a03:8180:13xx::/40/12036351natblock
2a03:8180:13xx::/40/11236351natblock
2a03:8180:13xx::/40/10436351natblock
2a03:8180:13xx::/40/9636351natblock
2a03:8180:13xx::/40/8836351natblock
2a03:8180:13xx::/40/8036351natblock
2a03:8180:13xx::/40/7236351natblock
2a03:8180:13xx::/40/6436351natblock
2a03:8180:13xx::/40/5636351natblock
2a03:8180:13xx::/40/4836351natblock
2a03:8180:13xx::/40/4036351natblock
2a03:8180:93xx::/40/32UNROUTEDnatblock
2a03:8100:13xx::/40/245524natblock
2a03:180:13xx::/40/16UNROUTEDnatblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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