🚀 go-pugleaf

stevea@i88.isc.com (Steve Alexander) writes:

>In article <bhqpxa.ane@wang.com> fitz@wang.com (Tom Fitzgerald) writes:
>>SCO works ok as a router, though it isn't a very fast one.  In fact, I
>>don't know of any way to turn off routing in the kernel (though you can
>>disable the routing daemon).  Even if the machine only has a single
>>interface, if it gets a mis-addressed packet, SCO will attempt to route it.

>In the next SCO TCP/IP release this will be controlled by kernel tunable
>parameters.  In the meantime the following program can be used to turn routing
>off.

>At TCP startup time, as root, run
>	kpatch ipforwarding 0
>	kpatch ipsendredirects 0

>This will disable forwarding of datagrams on systems that you don't want
>to act as routers.

You can also perform a similiar operation on either the currently
built /unix file or on the /etc/conf/pack.d/ip/Driver.o file
via either adb (if you have the development system)
or /etc/_fst (if you do not have it).

If the /unix file is patched with adb or _fst, then it is not necessary
to change the two ip parameters when tcp/ip is started.  However, if the
kernel is relinked, then you would need to re-patch /unix.

If the Driver.o file is patched, then everytime the kernel is linked,
the patch is already in place.

Here is the steps to follow  (Comments in UPPER CASE):

1. Login as root.

2. # adb -w /unix
        or
   # etc/_fst -w /unix
        or
   # adb -w /etc/conf/pack.d/ip/Driver.o
        or
   # /etc/_fst -w /etc/conf/pack.d/ip/Driver.o

3. * ipforwarding/D          THIS WILL DISPLAY THE CURRENT SETTING

4. * ipforwarding/W 0        THIS SETS IT TO 0

5. * ipsendredirects/D       THIS WILL DISPLAY THE CURRENT SETTING

6. * ipsendredirects/W 0     THIS SETS IT TO 0

7. If the Driver.o file was modified, relink the kernel and reboot.
   If the /unix file was modified, just reboot.


-- 
   Joel M. Swan                                 Email:  Joel.Swan@bull.com
   Bull Worldwide Information Systems, Inc.     Phone:  +1 (508) 294-6096
   MA30-836A  300 Concord Road                    Fax:  +1 (508) 294-6109
   Billerica, MA 01821