(unknown),

(unknown),

[Kirkwood, David A]

Do I need to enable ip-forwarding for a system to function as an ip
router or is this enabled automatically by routed? If I do need to
manually how do I enable it? If not can I disable it though the routed
or do I just use ipchains / iptables?

 

Thanks,

 

David 

Re:

[Tom Callahan]

 From what I remember, the answer is yes.

To manually enable it:
echo "1" > /proc/sys/net/ipv4/ip_forward

or/and add that to /etc/rc.d/rc.local

Thanks,

Tom Callahan
TESSCO Technologies
Desk: (410)-229-1361
Cell: (410)-588-7605
Email: callahant@tessco.com

A real engineer only resorts to documentation when the keyboard dents on the forehead get too noticeable.



Kirkwood, David A wrote:

>Do I need to enable ip-forwarding for a system to function as an ip
>router or is this enabled automatically by routed? If I do need to
>manually how do I enable it? If not can I disable it though the routed
>or do I just use ipchains / iptables?
>
> 
>
>Thanks,
>
> 
>
>David 
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-admin"
>in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>  
>

ipforward

[Adrian C.]

Or, to be a bit more fancy

# sysctl net.ipv4.ip_forward=1

;)

A little offtopic, a `fancy` thing i've been working on: 
http://fancyerrors.sf.net . It makes your Squid very sleek.

--Adrian.



Tom Callahan wrote:
>  From what I remember, the answer is yes.
> 
> To manually enable it:
> echo "1" > /proc/sys/net/ipv4/ip_forward
> 
> or/and add that to /etc/rc.d/rc.local
> 
> Thanks,
> 
> Tom Callahan
> TESSCO Technologies
> Desk: (410)-229-1361
> Cell: (410)-588-7605
> Email: callahant@tessco.com
> 
> A real engineer only resorts to documentation when the keyboard dents on 
> the forehead get too noticeable.

Re:

[tom arnall]

my system freezes when I try to run an application that handles a large file 
in a variable. I have set ulimits as follows:

	core file size 		(blocks, -c) 0
	data seg size			(kbytes, -d) unlimited
	file size				(blocks, -f) unlimited
	max locked memory 	(kbytes, -l) 256000
	max memory size		(kbytes, -m) 256000
	open files				(-n) 1024
	pipe size				(512 bytes, -p) 8
	stack size				(kbytes, -s) 8192
	cpu time 				(seconds, -t) unlimited
	max user processes	(-u) unlimited
	virtual memory 		(kbytes, -v) unlimited


Physical memory on the system is 512MB, yet when the application runs - 
despite the limits shown above - linux hands almost all of memory to the 
application.

Tom Arnall
north spit, ca

memory problems

[tom arnall]

my system freezes when I try to run an application that handles a large file 
in a variable. I have set ulimits as follows:

	core file size 		(blocks, -c) 0
	data seg size			(kbytes, -d) unlimited
	file size				(blocks, -f) unlimited
	max locked memory 	(kbytes, -l) 256000
	max memory size		(kbytes, -m) 256000
	open files				(-n) 1024
	pipe size				(512 bytes, -p) 8
	stack size				(kbytes, -s) 8192
	cpu time 				(seconds, -t) unlimited
	max user processes	(-u) unlimited
	virtual memory 		(kbytes, -v) unlimited


Physical memory on the system is 512MB, yet when the application runs - 
despite the limits shown above - linux hands almost all of memory to the 
application.

Tom Arnall
north spit, ca

Re:

[Glynn Clements]

Kirkwood, David A wrote:

> Do I need to enable ip-forwarding for a system to function as an ip
> router or is this enabled automatically by routed? If I do need to
> manually how do I enable it? If not can I disable it though the routed
> or do I just use ipchains / iptables?

It can be controlled with:

	echo 1 > /proc/sys/net/ipv4/ip_forward
or:
	sysctl net.ipv4.ip_forward=1

or, if your system has an /etc/sysctl.conf file, just add:

	net.ipv4.ip_forward=1

Also, do you actually need to run routed? If you aren't sure, the
answer is probably no.

-- 
Glynn Clements <glynn@gclements.plus.com>