|

»

networking help (routing table and iptables)

View: New views

6 Messages — Rating Filter: Alert me

	networking help (routing table and iptables) by H.S. :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hello, I have an old machine running Debian Testing and acting as a router between my home lan and my ADSL modem (modem works in bridge mode). The router has two nics, eth1 (connects to the modem) and eth0 (connects to a switch on my home lan). The wan device created by pppd is ppp0. I have this routing table: > /sbin/route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 Does this look good to the networking gurus here? I am not sure what to make of the last line. If something is the matter with this table, I will start looking for the problem. Thanks. -- Please reply to this list only. I read this list on its corresponding newsgroup on gmane.org. Replies sent to my email address are just filtered to a folder in my mailbox and get periodically deleted without ever having been read. -- To UNSUBSCRIBE, email to debian-user-REQUEST@... with a subject of "unsubscribe". Trouble? Contact listmaster@...
	Re: networking help (routing table and iptables) by Alex Samad :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Fri, Nov 06, 2009 at 04:35:58PM -0500, H.S. wrote: > Hello, > > I have an old machine running Debian Testing and acting as a router > between my home lan and my ADSL modem (modem works in bridge mode). > > The router has two nics, eth1 (connects to the modem) and eth0 (connects > to a switch on my home lan). > > The wan device created by pppd is ppp0. > > I have this routing table: > > /sbin/route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 > 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0 > 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 > 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 > 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 > > > Does this look good to the networking gurus here? I am not sure what to > make of the last line. last line is defining the default gateway - where to send packets when it doesn't have a local route. also try using ip route you also have wireless on ath0 > > If something is the matter with this table, I will start looking for the > problem. what problems do you have ? > > Thanks. -- "I refuse to be sucked into your hypnotheoretical arguments." - George W. Bush 10/15/2004 Indianapolis, IN signature.asc (205 bytes) Download Attachment
	Re: networking help (routing table and iptables) by Tony Nelson :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On 09-11-06 16:35:58, H.S. wrote: ... > I have this routing table: > > /sbin/route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use > Iface ... > 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 > ppp0 > > > Does this look good to the networking gurus here? I am not sure what > to make of the last line. Try without "-n" and it will explain. -- ____________________________________________________________________ TonyN.:' <mailto:tonynelson@...> ' <http://www.georgeanelson.com/> -- To UNSUBSCRIBE, email to debian-user-REQUEST@... with a subject of "unsubscribe". Trouble? Contact listmaster@...
	Re: networking help (routing table and iptables) by H.S. :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Alex Samad wrote: > On Fri, Nov 06, 2009 at 04:35:58PM -0500, H.S. wrote: >> I have this routing table: >>> /sbin/route -n >> Kernel IP routing table >> Destination Gateway Genmask Flags Metric Ref Use Iface >> <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 >> 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0 >> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 >> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 >> 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 >> >> >> Does this look good to the networking gurus here? I am not sure what to >> make of the last line. > > last line is defining the default gateway - where to send packets when > it doesn't have a local route. > > also try using > > ip route Yes, more explanation here. > ip route 206.248.154.122 dev ppp0 proto kernel scope link src 69.196.173.66 192.168.5.0/24 dev ath0 proto kernel scope link src 192.168.5.1 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.10 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1 default dev ppp0 scope link So that last line of the route command output earlier is present in all home router then? > > you also have wireless on ath0 Yes, forgot to specify that. Thanks. -- Please reply to this list only. I read this list on its corresponding newsgroup on gmane.org. Replies sent to my email address are just filtered to a folder in my mailbox and get periodically deleted without ever having been read. -- To UNSUBSCRIBE, email to debian-user-REQUEST@... with a subject of "unsubscribe". Trouble? Contact listmaster@...
	Re: networking help (routing table and iptables) by Alex Samad :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Fri, Nov 06, 2009 at 06:08:00PM -0500, H.S. wrote: > Alex Samad wrote: > > On Fri, Nov 06, 2009 at 04:35:58PM -0500, H.S. wrote: > > >> I have this routing table: > >>> /sbin/route -n > >> Kernel IP routing table > >> Destination Gateway Genmask Flags Metric Ref Use Iface > >> <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 > >> 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0 > >> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 > >> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 > >> 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 > >> > >> > >> Does this look good to the networking gurus here? I am not sure what to > >> make of the last line. > > > > last line is defining the default gateway - where to send packets when > > it doesn't have a local route. > > > > also try using > > > > ip route > > Yes, more explanation here. > > ip route > 206.248.154.122 dev ppp0 proto kernel scope link src 69.196.173.66 > 192.168.5.0/24 dev ath0 proto kernel scope link src 192.168.5.1 > 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.10 > 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1 > default dev ppp0 scope link > > So that last line of the route command output earlier is present in all > home router then? depends, if you have configured a default route then yes, if not then no. you could trick it with something like (try this) ip r d default ip r a 0.0.0.0/1 dev ppp0 ip r a 128.0.0.0/1 dev ppp0 ip r you shouldn't see a default route but your internet should still be working. > > > > > > you also have wireless on ath0 > > Yes, forgot to specify that. > > Thanks. > -- It is up to us to produce better-quality movies. -- Lloyd Kaufman, producer of "Stuff Stephanie in the Incinerator" signature.asc (205 bytes) Download Attachment
	Re: networking help (routing table and iptables) by H.S. :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Alex Samad wrote: > On Fri, Nov 06, 2009 at 06:08:00PM -0500, H.S. wrote: >> Alex Samad wrote: >>> On Fri, Nov 06, 2009 at 04:35:58PM -0500, H.S. wrote: >>>> I have this routing table: >>>>> /sbin/route -n >>>> Kernel IP routing table >>>> Destination Gateway Genmask Flags Metric Ref Use Iface >>>> <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 >>>> 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0 >>>> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 >>>> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 >>>> 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 >>>> >>>> >>>> Does this look good to the networking gurus here? I am not sure what to >>>> make of the last line. >>> last line is defining the default gateway - where to send packets when >>> it doesn't have a local route. >>> >>> also try using >>> >>> ip route >> Yes, more explanation here. >>> ip route >> 206.248.154.122 dev ppp0 proto kernel scope link src 69.196.173.66 >> 192.168.5.0/24 dev ath0 proto kernel scope link src 192.168.5.1 >> 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.10 >> 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1 >> default dev ppp0 scope link >> >> So that last line of the route command output earlier is present in all >> home router then? > > depends, if you have configured a default route then yes, if not then > no. > > you could trick it with something like (try this) > > ip r d default > ip r a 0.0.0.0/1 dev ppp0 > ip r a 128.0.0.0/1 dev ppp0 > > ip r > > > you shouldn't see a default route but your internet should still be > working. > Internet is working fine. Lan and Wlan to WAN, between lan and wlan, between vpn and wlan and wan and so on. I just wanted to know if my routing stuff was right after seeing many routing tables, while reading about networking, which did not have a line like my last line. Thanks. -- Please reply to this list only. I read this list on its corresponding newsgroup on gmane.org. Replies sent to my email address are just filtered to a folder in my mailbox and get periodically deleted without ever having been read. -- To UNSUBSCRIBE, email to debian-user-REQUEST@... with a subject of "unsubscribe". Trouble? Contact listmaster@...