Re: TCP Port 42 port scans? What the heck over...

["Daniel F. Chief Security Engineer -" <danielf () supportteam net>]

Port 42 is the WINS port, and if im not mistaken last week or the week before 
that an exploit was released for it, thats probably your culprit for the 
increased port 42 traffic levels.  

http://support.microsoft.com/default.aspx/kb/890710

On Monday 13 December 2004 07:46, James Lay wrote:
> Here they be.  ODD.  Anyone else seeing this?
>
> Dec 13 06:41:49 gateway kernel: Web netrecall drops:IN=br0 OUT=br0
> PHYSIN=eth1 PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.19.1 LEN=40 TOS=0x00
> PREC=0x00 TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535
> RES=0x00 SYN URGP=0
> Dec 13 06:41:49 gateway kernel: Web1 drops:IN=br0 OUT=br0 PHYSIN=eth1
> PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.18.1 LEN=40 TOS=0x00 PREC=0x00
> TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535 RES=0x00 SYN
> URGP=0
> Dec 13 06:41:49 gateway kernel: Web netrecall drops:IN=br0 OUT=br0
> PHYSIN=eth1 PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.19.4 LEN=40 TOS=0x00
> PREC=0x00 TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535
> RES=0x00 SYN URGP=0
> Dec 13 06:41:49 workbox kernel: IN=eth0 OUT=
> MAC=00:60:97:a5:76:36:00:10:7b:90:bc:30:08:00 SRC=131.252.116.141
> DST=10.1.200.10 LEN=40 TOS=0x00 PREC=0x00 TTL=116 ID=57370 DF PROTO=TCP
> SPT=6000 DPT=42 WINDOW=65535 RES=0x00 SYN URGP=0
> Dec 13 06:41:49 gateway kernel: Web netrecall drops:IN=br0 OUT=br0
> PHYSIN=eth1 PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.19.7 LEN=40 TOS=0x00
> PREC=0x00 TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535
> RES=0x00 SYN URGP=0
> Dec 13 06:41:49 gateway kernel: X12 drops:IN=br0 OUT=br0 PHYSIN=eth1
> PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.20.14 LEN=40 TOS=0x00 PREC=0x00
> TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535 RES=0x00 SYN
> URGP=0
> Dec 13 06:41:49 gateway kernel: Web netrecall drops:IN=br0 OUT=br0
> PHYSIN=eth1 PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.19.2 LEN=40 TOS=0x00
> PREC=0x00 TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535
> RES=0x00 SYN URGP=0
> Dec 13 06:41:49 gateway kernel: Htpedi drops:IN=br0 OUT=br0 PHYSIN=eth1
> PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.20.17 LEN=40 TOS=0x00 PREC=0x00
> TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535 RES=0x00 SYN
> URGP=0
> Dec 13 06:41:49 gateway kernel: Edirecall drops:IN=br0 OUT=br0 PHYSIN=eth1
> PHYSOUT=eth0 SRC=131.252.116.141 DST=10.1.20.12 LEN=40 TOS=0x00 PREC=0x00
> TTL=116 ID=57370 DF PROTO=TCP SPT=6000 DPT=42 WINDOW=65535 RES=0x00 SYN
> URGP=0
>
>
>
> James Lay
> Network Manager/Security Officer
> AmeriBen Solutions/IEC Group
> Deo Gloria!!!
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html

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Daniel Fairchild - Chief Security Officer | danielf () supportteam net
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