Differences

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--- unix:gateway [2013/10/13 11:53]
robm [IP Forwarding and NAT]
+++ unix:gateway [2013/10/13 12:32]
robm [IP Forwarding and NAT]
@@ Line 32: / Line 32: @@
 	lan -> switch
 	switch -> gateway:eth0:w
-	gateway:eth0:e -> switch
 }
@@ Line 40: / Line 39: @@
 ^ Device ^ Notes ^
 | modem | ADSL modem with 1x phone line socket and 1x ethernet socket. Tends to get clogged for some reason (high latency, but connection stays up) |
-| gateway | Fast desktop PC with two network adaptors, loads of RAM and nothing much to do |
+| gateway | Linux host with *one* network adaptor, and nothing much to do |
 | LAN | 4 or so PCs, Wii, Xbox, couple of Nintendo DS consoles, etc |
@@ Line 234: / Line 233: @@
 **Update 2013-10:** This guide used to update ''/proc/sys/net/ipv4/conf/all/accept_redirects'', but now uses ''*'' in place of ''all''. That was bad as the ''all'' configuration merely sets the default, but won't alter any existing interfaces. Thanks to [[http://unix.stackexchange.com/a/58081/22537|unix.stackexchange.com]] for this tip.
-Or permanently by adding the following to ''/etc/sysctl.conf'':
+Or permanently by adding the following to ''/etc/sysctl.conf''. Again, be on the safe side and explicitly name your interfaces:
 <code>
 net/ipv4/conf/all/accept_redirects = 0
 net/ipv4/conf/all/send_redirects = 0
+net/ipv4/conf/eth0/accept_redirects = 0
+net/ipv4/conf/eth0/send_redirects = 0
 </code>

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