Logo

Session Report

Summary:
Test run at: 2020-10-09 05:49:03 GMT
Client Prefix (v4): 193.235.207.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
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.

IPv4 Adjacent Netblock Testing:

Your host (193.235.207.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
193.235.207.x/24/31174natblock
193.235.207.x/24/30174natblock
193.235.207.x/24/29174natblock
193.235.207.x/24/28174natblock
193.235.207.x/24/27174natblock
193.235.207.x/24/26174natblock
193.235.207.x/24/25174natblock
193.235.207.x/24/24174natblock
193.235.206.x/24/238403natblock
193.235.205.x/24/22UNROUTEDnatblock
193.235.203.x/24/21UNROUTEDnatblock
193.235.199.x/24/2056946natblock
193.235.223.x/24/1935041natblock
193.235.239.x/24/1851747natblock
193.235.143.x/24/172119natblock
193.235.79.x/24/163301natblock
193.234.207.x/24/15UNROUTEDnatblock
193.233.207.x/24/14UNROUTEDnatblock
193.239.207.x/24/1333951natblock
193.227.207.x/24/1212998natblock
193.251.207.x/24/11UNROUTEDnatblock
193.203.207.x/24/1041835natblock
193.171.207.x/24/91853natblock
193.107.207.x/24/850763natblock

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.
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