How can I view and alter NIC settings, like auto-negotiate, speed, duplex on my Red Hat 8/9 boxes? Thanks, Bill
On Thu, Oct 09, 2003 at 01:18:34PM -0400, Bill Mills-Curran wrote:
How can I view and alter NIC settings, like auto-negotiate, speed, duplex on my Red Hat 8/9 boxes?
mii-tool or ethtool, depending on the driver. -- Charles R. Anderson <cra@wpi.edu> / http://angus.ind.wpi.edu/~cra/ PGP Key ID: 49BB5886 Fingerprint: EBA3 A106 7C93 FA07 8E15 3AC2 C367 A0F9 49BB 5886
Hi all... hope someone can help... been away from the meetings for a while... ( like a year ) due to health reasons... then to boot my linux machine had a massive failure and i had to replace it... had it all set up the forward and masquerade a couple of windows boxes through my dsl connection... ( verizon ) have the pppoe all set up... but can't for the life of me remember how to set up the ipchains to handle the windows boxes for the wife and kids... and man they are getting hostile about not being able to get on the internet from home... i know it was not that hard to set up but for the life of me i can not find the docs i used in the first place... hoping to make some meetings soon... now that the health is getting back to "normal"... and buying beer for the helpful guy that can get my network back to normal as well... best regards to all dave goss
From: David Goss <vze2bd6u@verizon.net>
have the pppoe all set up... but can't for the life of me remember how to set up the ipchains to handle the windows boxes for the wife and kids... and man they are getting hostile about not being able to get on the internet from home... i know it was not that hard to set up but for the life of me i can not find the docs i used in the first place...
Well, if you are starting from scratch you might as well use iptables instead of ipchains, which are nearing obsolete. Here is my "gateway" script. It is a firewall with a big hole in it. It protects the windows machines just by trusting the ISP not to route local addresses to you from outside. (I assume your Windows machines are 192.168.0.???, or similar.) Once you have a gateway working you can play with it to turn it into a real firewall. I have two ethernet cards in the firewall machine, one connected to the DSL modem one to the LAN. You don't say if you have the same. I think the below should work with one card, forwarding both from and to the LAN, but have not tried it. Also, I have a static IP address build into the script. I think to use PPPoE you need to change the last line, but again have not tried it. ------------------- #!/bin/bash /etc/sysconfig/network-scripts/ifup eth1 /sbin/rmmod ipchains /sbin/modprobe ip_conntrack_ftp echo "1" >/proc/sys/net/ipv4/ip_forward IPT="/sbin/iptables" INTERNET_ETHER="eth0" FCS_ETHER="eth1" GATEWAY_IP="66.92.74.1" FCS_IP="66.92.74.188" $IPT -t filter --flush $IPT -t nat --flush $IPT -t mangle --flush $IPT -A INPUT -i lo -j ACCEPT $IPT -A OUTPUT -o lo -j ACCEPT $IPT -t filter --policy INPUT ACCEPT $IPT -t filter --policy OUTPUT ACCEPT $IPT -t filter --policy FORWARD ACCEPT $IPT -t nat --policy PREROUTING ACCEPT $IPT -t nat --policy OUTPUT ACCEPT $IPT -t nat --policy POSTROUTING ACCEPT $IPT -t mangle --policy PREROUTING ACCEPT $IPT -t mangle --policy OUTPUT ACCEPT $IPT -t nat -A POSTROUTING -o $INTERNET_ETHER -j SNAT --to-source $FCS_IP ------------------ For PPPoE, change that last line to $IPT -t nat -A POSTROUTING -o $INTERNET_ETHER -j MASQURADE -- Keith
These links should get you started. I would be surprised if the distro you are running even supports ipchains. One NIC NAT: http://www.linuxjournal.com/article.php?sid=7175 Netfilter documentation section: http://www.netfilter.org/documentation/index.html iptables HOWTO: http://www.linuxguruz.com/iptables/howto/iptables-HOWTO.html GUI for iptables: http://www.fwbuilder.org/ rc script from linuhttp://www.linuxgazette.com/issue76/misc/whitmarsh/rc.firewall.sh.txtxgazett... artile:
participants (5)
-
Bill Mills-Curran -
Charles R. Anderson -
David Goss -
Keith Wright -
Matt Higgins