Invalid Packets From the DoD

Posted 768 days ago - Security

The firewall policies on Nullamatix.com DROP invalid connection attempts. Specifically, if an attempt to start a new tcp connection is not a syn packet, the packet is rejected. This morning I noticed a few dropped connection attempts from an unusual source, The U.S. Department of Defense. Here are the logs:

Dec 27 05:00:38: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:01:53: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:03:08: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:04:23: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:05:38: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:06:53: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 27 05:09:23: SRC=140.32.107.150 PROTO=TCP SPT=53175 DPT=80
Dec 18 09:25:19: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:26:34: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:27:49: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:29:04: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:30:19: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:31:34: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:32:49: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80
Dec 18 09:34:04: SRC=140.32.107.150 PROTO=TCP SPT=11601 DPT=80

What's really interesting are the lack of Lighttpd logs. Based on the logs I have, that IP has never made a legitimate visit to any of the sites hosted on this server. So what's the DoD up to? I don't mind them visiting at all, but why the invalid connection attempts? If someone at the DoD wants some information about this server, all they have to do is ask.

Whois Information for 140.32.107.150

OrgName:    DoD Network Information Center
OrgID:      DNIC
Address:    3990 E. Broad Street
City:       Columbus
StateProv:  OH
PostalCode: 43218
Country:    US

NetRange:   140.32.0.0 - 140.32.255.255
CIDR:       140.32.0.0/16
NetName:    SUM-DET-5
NetHandle:  NET-140-32-0-0-1
Parent:     NET-140-0-0-0-0
NetType:    Direct Assignment
NameServer: NS1.ARL.ARMY.MIL
NameServer: NS1.NOSC.MIL
NameServer: NS1.HPCMO.HPC.MIL
Comment:
RegDate:    1990-04-08
Updated:    2007-08-23

OrgTechHandle: MIL-HSTMST-ARIN
OrgTechName:   Network DoD
OrgTechPhone:  +1-800-365-3642
OrgTechEmail:  HOSTMASTER@nic.mil

OrgTechHandle: REGIS10-ARIN
OrgTechName:   Registration
OrgTechPhone:  +1-800-365-3642
OrgTechEmail:  REGISTRA@nic.mil

Word Count: 320

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