Logo

Session Report

Summary:
Test run at: 2017-04-28 15:20:07 GMT
Client Prefix (v4): 103.4.109.x/24
Client AS (v4): 10102 (SG-1ASIACOM-AS-AP)
IPv4 Probes: 91
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
Largest spoofable neighbor prefix length none
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 (103.4.109.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.4.109.x/24/3110102rewritten
103.4.109.x/24/3010102rewritten
103.4.109.x/24/2910102rewritten
103.4.109.x/24/2810102rewritten
103.4.109.x/24/2710102rewritten
103.4.109.x/24/2610102rewritten
103.4.109.x/24/2510102rewritten
103.4.109.x/24/2410102rewritten
103.4.108.x/24/2310102rewritten
103.4.111.x/24/2210102rewritten
103.4.105.x/24/219304rewritten
103.4.101.x/24/2056303rewritten
103.4.125.x/24/19133466rewritten
103.4.77.x/24/1817676rewritten
103.4.45.x/24/17UNROUTEDrewritten
103.4.237.x/24/16131476rewritten
103.5.109.x/24/15132031natblock
103.6.109.x/24/14UNROUTEDrewritten
103.0.109.x/24/137575rewritten
103.12.109.x/24/1210148rewritten
103.20.109.x/24/11UNROUTEDrewritten
103.36.109.x/24/1023352rewritten
103.68.109.x/24/948646rewritten
103.132.109.x/24/8UNROUTEDrewritten

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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