ip forward

Wed Dec 16 16:26:33 UTC 2009

Make a new network script

Do it like this:

Cat /etc/sysconfig/network-scripts/ifcfg-eth0:0 

# Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet

DEVICE=eth0:0

BOOTPROTO=none

BROADCAST=199.23.200.255

HWADDR=00:11:43:37:06:D5

IPADDR=199.23.200.90

NETMASK=255.255.255.0

NETWORK=199.23.200.0

ONBOOT=yes

TYPE=Ethernet

P

Please consider the environment  and support telework

J.R. Roystone, Unix/Linux Administrator

NEA ETS 202 822 7547

From: redhat-sysadmin-list-bounces at redhat.com
[mailto:redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Adel
ESSAFI
Sent: Wednesday, December 16, 2009 11:17 AM
To: redhat-sysadmin-list at redhat.com
Subject: Re: ip forward

I have a a single network card. I know someone whoi have done this with
only a single card.

2009/12/16 Scott Moseman <smoseman at novolink.net>

Don't you need to have your 2nd interface be physical, not an alias?

From: redhat-sysadmin-list-bounces at redhat.com
[mailto:redhat-sysadmin-list-bounces at redhat.com] On Behalf Of Adel
ESSAFI
Sent: Wednesday, December 16, 2009 8:46 AM
To: redhat-sysadmin-list at redhat.com
Subject: ip forward

Hi list
In my school, I need to have a PC that act like router since I have not
public addresses.

I have followed many link
(http://www.ducea.com/2006/08/01/how-to-enable-ip-forwarding-in-linux/,
the doc of fedora ....).
All tell the same thing.

Unfortunally, When I follow them, I have no results! When I ping  an
adsress from a windows PC (192.168.10.7) I have no response.

here is my configuration.

Can you help plz

Regards
ps: I am on fedora 10 and iptables is disabled.

[root localhost ~]# ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:18:8B:DB:7E:9E  
          inet addr:41.229.61.107  Bcast:41.229.61.255
Mask:255.255.255.0
          inet6 addr: fe80::218:8bff:fedb:7e9e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3183 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3256 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:872353 (851.9 KiB)  TX bytes:476139 (464.9 KiB)
          Interrupt:17 

eth0:1    Link encap:Ethernet  HWaddr 00:18:8B:DB:7E:9E  
          inet addr:192.168.10.10  Bcast:192.168.10.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:17 

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:16623 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16623 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:495159 (483.5 KiB)  TX bytes:495159 (483.5 KiB)

[root localhost ~]# route 
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
41.229.61.0     *               255.255.255.0   U     0      0        0
eth0
192.168.10.0    *               255.255.255.0   U     0      0        0
eth0
link-local      *               255.255.0.0     U     1002   0        0
eth0
default         41.229.61.65    0.0.0.0         UG    0      0        0
eth0
[root localhost ~]# iptables
iptables v1.4.3.2: no command specified
Try `iptables -h' or 'iptables --help' for more information.
[root localhost ~]# cat /etc/sysctl.conf 
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward = 1

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0

# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0

# Controls whether core dumps will append the PID to the core filename.
# Useful for debugging multi-threaded applications.
kernel.core_uses_pid = 1

# Added by Cinelerra RPM from RPM Fusion
kernel.shmmax = 0x7fffffff

-- 
http://ilovefedora.blogspot.com/
-- 
http://ilovefedora.blogspot.com/

-- 

PhD candidate in Computer Science
Address       
BP 108, Bureau de poste Tunis republique 
1001 Tunis
Tunisia
tel: +216 97 246 706
fax: +216 71 391 166

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-- 
http://ilovefedora.blogspot.com/

-- 

PhD candidate in Computer Science
Address       
BP 108, Bureau de poste Tunis republique 
1001 Tunis
Tunisia
tel: +216 97 246 706
fax: +216 71 391 166

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