Help

[Joel Hammer]

This problem is usually solvable by some tcpdump and ping detective work.
First, establish that your machines can ping the router, and vice versa.
Then, ping the router to your internet gateway.
Then, ping the gateway from the intranet. If no success, use tcpdump on
both your router's NIC's to see where the packets are being stopped.
It may be bad routing, or maybe you haven't turned on ip forwarding, or
maybe it is your firewall.
Sometimes looking at the arp table (arp -n) will give you insight.
Joel


On Sat, Dec 07, 2002 at 07:12:25PM -0800, Richard Sivernell wrote:
> List
> 
>  Need some real help here. Lost my gateway router
> drive last weeked and have been working to replace it.
> I have installed eServer 3.1.1 on a one gig hard
> drive, wait a sec. It has no gui except xdm & xterm
> and opera to get to the net. My inside network can not
> get to the outside world. 
> 
> What I have follows:
> 4 machines that can talk to each other in an intra net
> using 192.168.1.10,20,50,60, 1 is set as a router on
> router machine. All are same as when all worked, no
> changes.
> 
> New router machine:
> [root at Sivernell root]# ifconfig
> eth0      Link encap:Ethernet  HWaddr
> 00:48:54:55:94:7C inet addr:192.168.1.1
> Bcast:192.168.1.255  Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> RX packets:4585 errors:0 dropped:0 overruns:0 frame:0
> TX packets:450 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 
> 
> eth1      Link encap:Ethernet  HWaddr
> 00:48:54:55:8E:E4  
> inet addr:4.60.245.151  Bcast:4.60.255.255 
> Mask:255.255.240.0 UP BROADCAST RUNNING MULTICAST 
> MTU:1500  Metric:1 RX packets:4751 errors:0 dropped:0
> overruns:0 frame:0 TX packets:5632 errors:0 dropped:0
> overruns:0 carrier:0 collisions:10 
> 
> lo        Link encap:Local Loopback  
> inet addr:127.0.0.1  Mask:255.0.0.0
> UP LOOPBACK RUNNING  MTU:16436  Metric:1
> RX packets:46 errors:0 dropped:0 overruns:0 frame:0
> TX packets:46 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 
> 
> [root at Sivernell root]# 
> 
> [root at Sivernell root]# route -n
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 192.168.1.0 0.0.0.0 255.255.255.0 U      0      0 0
> eth0 
> 4.60.240.0  0.0.0.0 255.255.240.0 U      0      0 0
> eth1
> 127.0.0.0   0.0.0.0 255.0.0.0     U      0      0 0 lo
> 0.0.0.0     4.60.240.1 0.0.0.0    UG     0      0 0
> eth1
> 0.0.0.0     192.168.1.1 0.0.0.0   UG     1      0 0
> eth0
> [root at Sivernell root]# 
> 
> 4.60.240.1 -> 4.60.240.151 are dhcp from ISP eth1
> 192.168.1.1 are static                       eth0
> 
>   I also found a iptables script that Doug had asked
> all to view for his use for firewall. I have moded it
> for my use and installed as such >> ./iptables_script
> 
>   I assume I have not gotten something right or messed
> up somewhere. Any help appreciated here
> 
>    I am using Yahoomail till I can get my system back
> on line, please forgive me, please
> 
> cheers
> 
> Rick Sivernell
> res005ru at gte.net
> 
> __________________________________________________
> Do you Yahoo!?
> Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
> http://mailplus.yahoo.com
> _______________________________________________
> Linux-users mailing list
> Linux-users at linux-sxs.org
> Unsubscribe/Suspend/Etc -> http://www.linux-sxs.org/mailman/listinfo/linux-users