Logo

Session Report

Summary:
Test run at: 2021-06-07 20:15:56 GMT
Client Prefix (v4): 177.44.159.x/24
Client AS (v4): 262428
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8

Meaning of result status in column:

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 (177.44.159.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.44.159.x/24/31262428natblock
177.44.159.x/24/30262428natblock
177.44.159.x/24/29262428yes
177.44.159.x/24/28262428yes
177.44.159.x/24/27262428yes
177.44.159.x/24/26262428yes
177.44.159.x/24/25262428yes
177.44.159.x/24/24262428yes
177.44.158.x/24/23262428yes
177.44.157.x/24/22262428yes
177.44.155.x/24/21262428yes
177.44.151.x/24/20262428yes
177.44.143.x/24/19262424yes
177.44.191.x/24/1853173yes
177.44.223.x/24/17263139yes
177.44.31.x/24/1628202yes
177.45.159.x/24/1519182yes
177.46.159.x/24/1428166yes
177.40.159.x/24/1318881yes
177.36.159.x/24/12262401yes
177.60.159.x/24/1126599yes
177.12.159.x/24/1028188yes
177.108.159.x/24/926615yes
177.172.159.x/24/826599yes

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 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