172.71.x.x is outside the range of 172.16 to 172.32 reserved for local intranets per RFC 1918, so is either in your allocated address space, or you are exposing your VMS system to the public Internet.
(Or you have a mis-configuration of your intranet)
If your system is exposed to the public Internet, with out a firewall, then you are going to get continuously probed for security holes. These probes can use up a lot of system resources, and might actually find a security hole, or if the attacker can not find a security hole, may try a DDOS.
I strongly recommend that you have some sort of firewall appliance that will handle the probes.
People on the comp.os.vms newsgroup may be able to offer more specific information about multinet.
jiml November 09 2018 Thank you , Malmberg ! Exactly what I was hoping for . Reset key & all is well . JImL
malmberg November 09 2018 Eisner was upgraded to the current Multinet Release. As part of that a new host key was generated. The old key was incompatible with newer Linux.
jiml November 02 2018 ssh to eisner is now giving (on linux) "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" , Has the server key in fact changed ?
malmberg June 26 2018 https://www.openvmshobbyi st.com/forum/viewthread.p hp?forum_id=10&thread_id= 2363
bhamakripa June 24 2018 I am trying OpenVMS via SIMH. Need to get OS binaries for v7.3. Registered here but don't have any membership number yet which is needed to get license. Pls suggest what to do. I hardly know anyth
basilh June 05 2018 Any other forum members in Perth, Australia?
malmberg March 24 2018 Probably. More people hang out on the comp.os.vms newsgroup.
vaxpert March 23 2018 I have a PE42A and other Alpha system stuff for sale. I'm in So California. Any interest out there?
goodbyespy February 27 2018 To Prohorenko. Please, visit group OpenVMS in the ok.ru
peteherrera February 24 2018 How much does it cost to buy a complete OpenVMS hardcopy documentation set of the latest version
prohorenko February 17 2018 Please help to obtain the license on OpenVMS
malmberg December 12 2017 HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.
nmbonao December 08 2017 Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much
aarommes December 02 2017 Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis t.com/forum/viewthread.ph p?forum_id=130&thread_id= 2991