Logo

Session Report

Summary:
Test run at: 2020-08-24 16:12:11 GMT
Client Prefix (v4): 192.81.128.x/24
Client AS (v4): 63949 (LINODE-AP)
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 (192.81.128.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
192.81.128.x/24/3163949natblock
192.81.128.x/24/3063949natblock
192.81.128.x/24/2963949natblock
192.81.128.x/24/2863949natblock
192.81.128.x/24/2763949natblock
192.81.128.x/24/2663949natblock
192.81.128.x/24/2563949natblock
192.81.128.x/24/2463949natblock
192.81.129.x/24/2363949natblock
192.81.130.x/24/2263949natblock
192.81.132.x/24/2163949natblock
192.81.136.x/24/20UNROUTEDnatblock
192.81.144.x/24/1923500natblock
192.81.160.x/24/18UNROUTEDnatblock
192.81.192.x/24/17UNROUTEDnatblock
192.81.0.x/24/16393950natblock
192.80.128.x/24/1518978natblock
192.83.128.x/24/1419397natblock
192.85.128.x/24/132173natblock
192.89.128.x/24/121759natblock
192.65.128.x/24/11UNROUTEDnatblock
192.113.128.x/24/1016074natblock
192.17.128.x/24/938natblock
192.209.128.x/24/8UNROUTEDnatblock

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