Thank you for all really I solved the forward/ip sharing problem...
But I see there is other problem with that like this;
This is my network structure now; LAN(there are 3machines): start ip:192.168.1.10 http://192.168.10.10/ end ip: 192.168.1.12 http://192.168.10.12/ gateway address of users: 192.168.1.100 (my server's LAN side ip address) LAN side Server ip: 192.168.1.100 http://192.168.10.13/
WAN(this ip comes from behind of swicth. the switch is behind of firewall and firewall is behind of router): WAN side Server ip: 192.168.10.13 http://10.10.1.223/ gateway address of Server:192.168.10.1 http://10.10.1.111/
And here is the problem i thing; The users from inside(LAN) can reach from server's WAN side ip(192.168.10.13) and they can ping it and they can take a services which is for LAN services(like ssh...etc).
I agree that pinging from LAN to gateway address(192.168.10.1). But I cant agree that pinging to server's WAN address(192.168.10.13). Do I thing wrong at this point? and last question is about how can I close/stop services for WAN side?
thanks to all of you...
sincerely yours...
2008/1/24, Alain Spineux aspineux@gmail.com:
On Jan 24, 2008 5:42 AM, Alain Spineux aspineux@gmail.com wrote:
On Jan 23, 2008 9:43 AM, Tolun ARDAHANLI tolun.ardahanli@linux.org.tr
wrote:
Hi again to everyone;
Guys your mails are very nice... i liked all of them...
let me give you about my system and my need(sorry for writing these
late)...
I've got an IBM x3650 server which is open 7d/24h. It has got 2
ethernet
card. I would like to connect my LAN to WAN over this machine...
LAN(there are 3machines): start ip:192.168.10.10 end ip: 192.168.10.12 gateway address of users:192.168.10.13(my server's LAN side ip
address)
LAN side Server ip: 192.168.10.13
WAN(this ip comes from behind of swicth. the switch is behind of
firewall
and firewall is behind of router): WAN side Server ip: 10.10.1.223 gateway address of Server:10.10.1.111
this is my network chances...:( i cant change them cause our company
has
strong rules for these addresses... I want to share my WAN side ip
address
to my LAN side...
How can I do that on my CENTos installed server?
thanks a lot to everybody...
The short way, supposing your wan is secure and your wan interface is
eth1:
Disable any firewall rules on your centos,
service iptables stop chkconfig iptables off
try these commands, and if this is working put them in your
/etc/init.d/rc.local
# enable forwarding of packet between all interfaces echo 1 > /proc/sys/net/ipv4/ip_forward # config masquerading, any packet leaving eth1 will be masqueraded, taking eth1 address for source address. iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE
Another interesting way, is to setup only routing on your centos, and add (ask your network manager) the route of your internal network (I guess 192.168.10.8/29 through 192.168.10.13 ) on your firewall and maybe a similar one on your router if the firewall is not doing NAT. Then your firewall administrator can control the access to any of your internal machines or make some of them reachable from outside if for example you want to have a web server or an email server (this is not a good idea, but you get the idea). All of this without chnaging anything more on your centos router.
To route packet only, without doing NAT (aka MASQUERADING or HIDE-NAT) just use echo 1 > /proc/sys/net/ipv4/ip_forward
Regards
Regards.
2008/1/22, Dennis McLeod <dmcleod@foranyauto.com >:
I have an IPcop box setup at work. Using squidguard to keep
customers from
surfing porn while they are in our waiting room. (On a completely
separate
DSL connection..)
I have an Astaro Security Gateway setup at home (on a Dell p3
precision
220). Free home license, do FAR more than your typical broadband
router.
Not
a small learning curve, though. Wireless is through a D-link
DWL-7100(I
think) access point in the attic. I have a Linksys wrt54g (original version) with openWRT, but it's
just
there
for backup.....
Any of the above will accomplish your goal...
-----Original Message----- From: centos-bounces@centos.org [mailto: centos-bounces@centos.org]
On
Behalf
Of Alain Spineux Sent: Tuesday, January 22, 2008 6:52 AM To: CentOS mailing list Subject: Re: [CentOS] How can i share my WAN ip to my LAN?
On Jan 22, 2008 3:17 PM, William L. Maltby <
CentOS4Bill@triad.rr.com>
wrote:
On Tue, 2008-01-22 at 14:49 +0100, Alain Spineux wrote:
On Jan 22, 2008 8:46 AM, Tolun ARDAHANLI <
tolun.ardahanli@linux.org.tr>
wrote:
> Hi everybody... > > How can I share my WAN ip to my LAN? How can I do that I
really
> dont know...:( I am using linux long time ago but this kind I > would like to do newly...
Buy a small router/modem, ask your ISP for suggestions. This is cheap (<100$), no need to keep your computer always
turned
on, very easy to configure if you nead more features (port forwarding for skype, games, p2p, ....), have some builtint
feature
(dhcp, DNS proxy). Also think about wireless ...... This is probably more secure, not because centos/linux is not,
but
because you dont know what you are doing.
Of course this is less fun
Well, I wasn't going to suggest, but since the topic of
alternatives
is open...
:-)
Of course the main idea is to avoid to have a non firewall dedicated
linux
(like centos is) configured by someone without to much network
knowledge
be
in front of Internet.
If you have an older available computer laying around, check out
IPCop
http://www.ipcop.org/free, has lots of features, runs reliably, I've been on it for
years,
as have others on this list. Biggest gripe I have is docs could be
a
little better - they tend to not get updated to stay up with the
software.
Regards.
> > Can anybody help me about IP sharing in Centos? > > thanks alot... > > > -- > Tolun ARDAHANLI > Bilgisayar Muhendisi > E-posta: tolun.ardahanli@linux.org.tr > Icq:326600 > >
> ---------- > > Tolun ARDAHANLI > Computer Engineer > E-mail:tolun.ardahanli@linux.org.tr > Icq:326600 ><snip sig stuff>
HTH
Bill
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-- Alain Spineux aspineux gmail com May the sources be with you _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
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--
Tolun ARDAHANLI Bilgisayar Muhendisi E-posta:tolun.ardahanli@linux.org.tr Icq:326600
Tolun ARDAHANLI Computer Engineer E-mail:tolun.ardahanli@linux.org.tr Icq:326600 _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
-- Alain Spineux aspineux gmail com May the sources be with you
-- Alain Spineux aspineux gmail com May the sources be with you _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos