Sebek Server and ICMP Host Unreacheable

[Major Sylvain Leblanc <leblanc-s () rmc ca>]

Hello everyone,

I think I may be missing something, please let me know.  I installed the 
Sebek server and Linux client on two VMWare RedHat 9 VMs.  Works like a 
charm! 

However, when I sniff the network traffic on the client using snort, I 
can see "ICMP Host Unreachable" packets being generated by the server.  
Running netstat on the server shows me that no processes are tied to my 
Sebek destination port, so I presume that the server is "sniffing" the 
keystroke data right off the interface. 

I am pretty sure that I could netstat a dummy process to my Sebek 
destination port so the server will not send "ICMP Host Unreachable" 
packets.  Easy to fix, but this seems to me to be a fairly easy 
"fingerprint" that shows an attacker that something is not quite right 
which may give away the Honeypot.  Any thoughts?

Sly
--
Professeur adjoint
le major


S.P. Leblanc, P.Eng.
Major
Assistant Professor
Phone: (613) 541-6000 Extension 6355
Fax: (613) 541-6315
http://www.rmc.ca/academic/busadm/staff/leblanc_f.html