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 at gmail.com>: > > On Jan 24, 2008 5:42 AM, Alain Spineux <aspineux at gmail.com> wrote: > > On Jan 23, 2008 9:43 AM, Tolun ARDAHANLI <tolun.ardahanli at 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 at 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 at centos.org [mailto: centos-bounces at 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 at 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 at 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 at linux.org.tr > > > > > > > Icq:326600 > > > > > > > > > > > > > > > ------------------------------------------------------------------ > > > > > > > ---------- > > > > > > > > > > > > > > Tolun ARDAHANLI > > > > > > > Computer Engineer > > > > > > > E-mail:tolun.ardahanli at linux.org.tr > > > > > > > Icq:326600 > > > > > > ><snip sig stuff> > > > > > > > > > > HTH > > > > > -- > > > > > Bill > > > > > > > > > > > > > > > _______________________________________________ > > > > > CentOS mailing list > > > > > CentOS at centos.org > > > > > http://lists.centos.org/mailman/listinfo/centos > > > > > > > > > > > > > > > > > > > > > -- > > > > Alain Spineux > > > > aspineux gmail com > > > > May the sources be with you > > > > _______________________________________________ > > > > CentOS mailing list > > > > CentOS at centos.org > > > > http://lists.centos.org/mailman/listinfo/centos > > > > > > > > _______________________________________________ > > > > CentOS mailing list > > > > CentOS at centos.org > > > > http://lists.centos.org/mailman/listinfo/centos > > > > > > > > > > > > > > > > -- > > > > > > > > > Tolun ARDAHANLI > > > Bilgisayar Muhendisi > > > E-posta:tolun.ardahanli at linux.org.tr > > > Icq:326600 > > > > > > > ---------------------------------------------------------------------------- > > > > > > Tolun ARDAHANLI > > > Computer Engineer > > > E-mail:tolun.ardahanli at linux.org.tr > > > Icq:326600 > > > _______________________________________________ > > > CentOS mailing list > > > CentOS at 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 at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Tolun ARDAHANLI Bilgisayar Muhendisi E-posta:tolun.ardahanli at linux.org.tr Icq:326600 ---------------------------------------------------------------------------- Tolun ARDAHANLI Computer Engineer E-mail:tolun.ardahanli at linux.org.tr Icq:326600 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080125/a98968c2/attachment-0004.html>