<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Don’t you need to have your 2nd interface be physical, not an alias?<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'> From: redhat-sysadmin-list-bounces@redhat.com [mailto:redhat-sysadmin-list-bounces@redhat.com] On Behalf Of Adel ESSAFI Sent: Wednesday, December 16, 2009 8:46 AM To: redhat-sysadmin-list@redhat.com Subject: ip forward<o:p></o:p> </div> <o:p> </o:p> <div> 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 (<a href="http://www.ducea.com/2006/08/01/how-to-enable-ip-forwarding-in-linux/" target="_blank">http://www.ducea.com/2006/08/01/how-to-enable-ip-forwarding-in-linux/</a>, 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 -- <a href="http://ilovefedora.blogspot.com/" target="_blank">http://ilovefedora.blogspot.com/</a> -- <a href="http://ilovefedora.blogspot.com/" target="_blank">http://ilovefedora.blogspot.com/</a> -- 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<o:p></o:p> </div> </div> </body> </html>