Sudochmod appears at /Library/StartupItems in my MacBook Air 2012 (Mavericks). Should I be concerned? Could it be connected with nginx web server pages which have appeared recently? Newcomer there4 apologies if there is an obvious and simple explanation

Question

Is this a standard inclusion in the startup items list and I am therefore being paranoid or could it be linked to the Welcome to the Nginx Server page I obtained when by chance I typed in http:dyn.org by mistake when intending to go  to the DynDNS webside? Details below. Can anyone assist please?
Sudoschmod file :
#! /bin/sh
. /etc/rc.common
StartService ()
          # Unfortunately, Mac OS X's devfs is based on the old FreeBSD
          # one, not the current one, so there's no way to configure it
          # to create BPF devices with particular owners or groups.
          # This startup item will make it owned by the admin group,
          # with permissions rw-rw----, so that anybody in the admin
          # group can use programs that capture or send raw packets.
          # Change this as appropriate for your site, e.g. to make
          # it owned by a particular user without changing the permissions,
          # so only that user and the super-user can capture or send raw
          # packets, or give it the permissions rw-r-----, so that
          # only the super-user can send raw packets but anybody in the
          # admin group can capture packets.
        #BPF_GROUP="access_bpf"
        #BPF_GROUP_NAME="BPF device access ACL"
        #dscl . -read /Groups/"$BPF_GROUP" > /dev/null 2>&1 || \
        #dseditgroup -q -o create "$BPF_GROUP"
        #dseditgroup -q -o edit -a "$USER" -t user "$BPF_GROUP"
        #chgrp access_bpf /dev/bpf*
        sudo mknod /dev/bpf4 c 23 4
        sudo mknod /dev/bpf5 c 23 5
        sudo mknod /dev/bpf6 c 23 6
        chgrp admin /dev/bpf*
        chmod  a=rwx /dev/bpf*
        chmod  a=rwx /dev/bpf*
StopService ()
          return 0;
RestartService () { StartService; }
RunService "$1"
StartupParameters.plist:
StartupParameters.plist
  Description     = "Change BPF permissions for isudo";
  Provides        = ("Sudochmod");
is this a standard inclusion in the startup items list and I am therefore being paranoid or could it be linked to the Welcome to the Nginx Server page I obtained when by chance I typed in http:dyn.org by mistake when intending to go  to the DynDNS webside? Can anyone assist please?

Answer 1

>>Is this a standard inclusion in the startup items list
No
>>could it be linked to the Welcome to the Nginx Server page I obtained when by chance I typed in http:dyn.org by mistake when intending to go  to the DynDNS webside?
No, that could not have been placed there by visiting a website.
You may have installed wireshark or some other packet-capturing software.