💾 Archived View for thebackupbox.net › ~epoch › blog › cisco captured on 2024-12-17 at 10:14:23. Gemini links have been rewritten to link to archived content
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the only interface that can have an IP directly assigned is the WAN interface.
the others have to be added to a vlan, then you make the vlan interface up using
no shutdown
and you have to bring the individual LAN interfaces up too
with a WAN IP of: 1.2.3.4/32
and a LAN of: 192.168.1.1/24
access-list 1 permit 192.168.1.0 0.0.0.255
so that thing that looks like a backwards netmask isn't a bug.
when you finish editing from terminal, make sure to copy the running config onto the startup config using:
copy running-config startup-config
to get into configuration use these two commmands:
enable configure
You can then use
interface
to pick an interface to configure.
I had my WAN interface set to DHCP but it wasn't getting an IP
even after doing
shutdown no shutdown
on the interface multiple times.
it took a reboot (after saving) for it to grab an IP
to forward only a single port do soemthing like:
ip nat inside source static tcp 192.168.1.2 6697 interface FastEthernet8 6697
to forward all ports do:
ip nat source static 192.168.1.2 interface FastEthernet 8
Which is what I was wanting in the first place
except that it keeps the tunnel on protocol 41 from working. :/
and to get NAT hairpinning / loopback/ whatever I followed pretty much this: