On Tue, Nov 11, 2014 at 5:53 AM, Steve Clark <sclark at netwolves.com> wrote: > On 11/10/2014 05:38 PM, Jack Bailey wrote: >> >> On 11/10/2014 2:11 PM, Frank Cox wrote: >>> >>> I have both cable and dsl service. The router attached to the cable >>> service is 192.168.0.1 and the router attached to the dsl service is >>> 192.168.0.254. I determine which service my computers communicate through >>> by setting the gateway assignment to either of those addresses and it just >>> works. >>> >>> I can connect to my computers from the outside by port forwarding from my >>> routers to the computer that I want to connect to. >>> >>> However, the outside ssh connection works only if the computer's gateway >>> assignment matches the router that I'm connecting to. I suspect that I have >>> to set up some sort of routing assignment to tell the computer to reply to >>> the gateway that the ssh connection request came in on if it doesn't match >>> the current gateway assignment, but I have no idea how to do that. >>> >> I also have two ISPs at home. I have a Peplink to manage this now, but >> before that I some commands in rc.local. I had two networks and two >> NICs on my workstation. This used to work on CentOS 6. >> >> ############################## >> # symetric routing # >> ############################## >> >> NIC1=eth0 >> IP1=192.168.1.6 >> GW1=192.168.1.1 >> NET1=192.168.1.0/24 >> >> NIC2=eth1 >> IP2=192.168.2.6 >> GW2=192.168.2.1 >> NET2=192.168.2.0/24 >> >> DEFGW=$GW2 >> >> cat << EOF > /etc/iproute2/rt_tables >> # >> # reserved values >> # >> 255 local >> 254 main >> 253 default >> 0 unspec >> # >> # local >> # >> #1 inr.ruhep >> >> # symetric routing >> 101 T1 >> 102 T2 >> EOF >> >> # routing and default gateway for each interface >> ip route add $NET1 dev $NIC1 src $IP1 table T1 >> ip route add default via $GW1 table T1 >> ip route add $NET2 dev $NIC2 src $IP2 table T2 >> ip route add default via $GW2 table T2 >> >> # regular routes >> ip route add $NET1 dev $NIC1 src $IP1 >> ip route add $NET2 dev $NIC2 src $IP2 >> >> # preference for default route >> route delete default >> ip route add default via $DEFGW >> >> # rules >> ip rule add from $IP1 table T1 >> ip rule add from $IP2 table T2 >> >> # enable routing >> echo 1 > /proc/sys/net/ipv4/ip_forward >> >> Good luck, >> Jack >> >> > I can verify the above works just fine if all you want to be able to do is > reach your system from > outside over either isp.. > I think that is a different scenario, though. Since the subnet addresses are the same for both routers, the OP must only have one NIC. -- Les Mikesell lesmikesell at gmail.com