Share internet connection/make a small server
Antonio Olivares
olivares14031 at yahoo.com
Tue Aug 30 13:02:23 UTC 2005
--- Alexander Dalloz <ad+lists at uni-x.org> wrote:
> Am Di, den 30.08.2005 schrieb Antonio Olivares um
> 1:45:
>
> > apparently everything is working, but I cannot get
> > into internet from Windows 98 SE machine using
> dhcp to
> > access it.
> > Should I change the subnetmask?
>
> No.
>
> > Should I rename domain-name-servers or just omit
> that
> > line?
>
> domain-name-servers should be IP addresses. Which to
> use I can't judge,
> but maybe the 2 of your ISP may be best choice.
>
> > Antonio
>
> Make sure you have forwarding set on on the gateway
> host:
>
> $ cat /proc/sys/net/ipv4/ip_forward
>
> must print out "1" (without quotes). If it does not,
> then activate it in
> /etc/sysctl.conf and run "sysctl -p". Make too sure
> the gateway does NAT
> by an iptables rule like:
>
> iptables -A POSTROUTING -o eth0 -j MASQUERADE
>
> [eth0 should be in your case the outgoing device]
eth0 is the incoming connection should eth1 be the
outgoing. I'm a little confused but getting there.
>
> Alexander
>
>
> --
> Alexander Dalloz | Enger, Germany | GPG
> http://pgp.mit.edu 0xB366A773
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> 2.6.11-1.35_FC2smp
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[root at rio ~]# cat /proc/sys/net/ipv4/ip_forward
1
[root at rio ~]# iptables -A POSTROUTING -o eth0 -j
MASQUERADE
iptables: No chain/target/match by that name
[root at rio ~]#
[root at rio ~]# iptables -A POSTROUTING -o eth0 -j
MASQUERADE
iptables: No chain/target/match by that name
[root at rio ~]#
[root at rio ~]# iptables -A POSTROUTING -o eth1 -j
MASQUERADE
iptables: No chain/target/match by that name
[root at rio ~]# iptables -t nat -A POSTROUTING -o eth1
-j MASQUERADE
[root at rio ~]# service dhcpd status
dhcpd (pid 4917) is running...
[root at rio ~]# service iptables save\
>
[root at rio ~]# service iptables save
Saving firewall rules to /etc/sysconfig/iptables:
[ OK ]
[root at rio ~]# service network restart
Shutting down interface eth0:
[ OK ]
Shutting down interface eth1:
[ OK ]
Shutting down loopback interface:
[ OK ]
Disabling IPv4 packet forwarding:
[ OK ]
Setting network parameters:
[ OK ]
Bringing up loopback interface:
[ OK ]
Bringing up interface eth0:
[ OK ]
Bringing up interface eth1:
[ OK ]
[root at rio ~]# touch /var/state/dhcpd/dhcpd.leases
[root at rio ~]# service dhcpd status
dhcpd (pid 4917) is running...
[root at rio ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr
00:50:2C:A6:19:28
inet addr:10.154.19.136 Bcast:10.154.19.255
Mask:255.255.255.0
inet6 addr: fe80::250:2cff:fea6:1928/64
Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500
Metric:1
RX packets:6848 errors:0 dropped:0
overruns:0 frame:0
TX packets:4031 errors:0 dropped:0
overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3177302 (3.0 MiB) TX bytes:901591
(880.4 KiB)
Interrupt:11 Base address:0xae00
eth1 Link encap:Ethernet HWaddr
00:60:97:C5:2A:C3
inet addr:192.168.100.1
Bcast:192.168.100.255 Mask:255.255.255.0
inet6 addr: fe80::260:97ff:fec5:2ac3/64
Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500
Metric:1
RX packets:515 errors:0 dropped:0 overruns:0
frame:0
TX packets:114 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:1000
RX bytes:74818 (73.0 KiB) TX bytes:19234
(18.7 KiB)
Interrupt:11 Base address:0xec00
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0
frame:0
TX packets:52 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:0
RX bytes:3794 (3.7 KiB) TX bytes:3794 (3.7
KiB)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0
frame:0
TX packets:0 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root at rio ~]#
I have made most changes that Jeff and Alexander have
provided and I know that I am close as possible to
getting this thing going.
I tried to connect to the internet from within Windows
98 machine and I get a DNS error and cannot connect.
However, the ipconfig /all, ipconfig /release_all and
ipconfig /renew_all give the following
iprelease gives
Windows 98 IP Configuration
0 Ethernet adapter :
IP Address. . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . : 0.0.0.0
Default Gateway . . . . . . :
1 Ethernet adapter :
IP Address. . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . : 0.0.0.0
Default Gateway . . . . . . :
Windows 98 IP Configuration
Host Name . . . . . . . . . : 4280 LAB 21.domain.lan
DNS Servers . . . . . . . . :
Node Type . . . . . . . . . : Broadcast
NetBIOS Scope ID. . . . . . :
IP Routing Enabled. . . . . : No
WINS Proxy Enabled. . . . . : No
NetBIOS Resolution Uses DNS : No
0 Ethernet adapter :
Description . . . . . . . . : PPP Adapter.
Physical Address. . . . . . : 44-45-53-54-00-00
DHCP Enabled. . . . . . . . : Yes
IP Address. . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . : 0.0.0.0
Default Gateway . . . . . . :
DHCP Server . . . . . . . . : 255.255.255.255
Primary WINS Server . . . . :
Secondary WINS Server . . . :
Lease Obtained. . . . . . . :
Lease Expires . . . . . . . :
1 Ethernet adapter :
Description . . . . . . . . : 3Com 3C90x Ethernet
Adapter
Physical Address. . . . . . : 00-C0-4F-73-25-42
DHCP Enabled. . . . . . . . : Yes
IP Address. . . . . . . . . : 192.168.100.200
Subnet Mask . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . : 192.168.100.1
DHCP Server . . . . . . . . : 192.168.100.1
Primary WINS Server . . . . :
Secondary WINS Server . . . :
Lease Obtained. . . . . . . : 08 30 05 7:22:21 AM
Lease Expires . . . . . . . : 08 31 05 7:22:21 AM
Windows 98 IP Configuration
Host Name . . . . . . . . . : 4280 LAB 21.domain.lan
DNS Servers . . . . . . . . :
Node Type . . . . . . . . . : Broadcast
NetBIOS Scope ID. . . . . . :
IP Routing Enabled. . . . . : No
WINS Proxy Enabled. . . . . : No
NetBIOS Resolution Uses DNS : No
0 Ethernet adapter :
Description . . . . . . . . : PPP Adapter.
Physical Address. . . . . . : 44-45-53-54-00-00
DHCP Enabled. . . . . . . . : Yes
IP Address. . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . : 0.0.0.0
Default Gateway . . . . . . :
DHCP Server . . . . . . . . : 255.255.255.255
Primary WINS Server . . . . :
Secondary WINS Server . . . :
Lease Obtained. . . . . . . :
Lease Expires . . . . . . . :
1 Ethernet adapter :
Description . . . . . . . . : 3Com 3C90x Ethernet
Adapter
Physical Address. . . . . . : 00-C0-4F-73-25-42
DHCP Enabled. . . . . . . . : Yes
IP Address. . . . . . . . . : 192.168.100.200
Subnet Mask . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . : 192.168.100.1
DHCP Server . . . . . . . . : 192.168.100.1
Primary WINS Server . . . . :
Secondary WINS Server . . . :
Lease Obtained. . . . . . . : 08 30 05 7:22:21 AM
Lease Expires . . . . . . . : 08 31 05 7:22:21 AM
It is probably something with the settings.
Apparently everything looks ok but connection not
good. Thanks for all suggestions and help provided.
Kind Regards,
Antonio
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