Linux Advocate wrote:

>i thought vlans could only be done by switches, not by shorewall. 
>cant seem to find the doc page about vlan setup at the shorewall 
>site. or is thevlan setup done in the OS and not thru shorewall?

The setup is done in the OS, for example, this is a snippet from a 
Debian /etc/network/interfaces file :

>auto ethint
>iface ethint inet static
>   address 10.1.1.1
>   netmask 255.255.255.0
>   vlan_raw_device ethint
>   up echo "Name-Type: VLAN_NAME_TYPE_PLUS_VID_NO_PAD" > /proc/net/vlan/config
>
>
>auto vlan101
>iface vlan101 inet static
>   address 10.1.101.1
>   netmask 255.255.255.0
>   vlan_raw_device ethint
>   up echo 1 > /proc/sys/net/ipv4/conf/vlan101/arp_filter
>   up echo 2 > /proc/sys/net/ipv4/conf/vlan101/arp_ignore
>   up echo 1 > /proc/sys/net/ipv4/conf/vlan101/rp_filter
>
>
>auto vlan102
>iface vlan102 inet static
>   address 10.1.102.1
>   netmask 255.255.255.0
>   vlan_raw_device ethint
>   up echo 1 > /proc/sys/net/ipv4/conf/vlan102/arp_filter
>   up echo 2 > /proc/sys/net/ipv4/conf/vlan102/arp_ignore
>   up echo 1 > /proc/sys/net/ipv4/conf/vlan102/rp_filter


Then for the Shorewall config.
Interfaces :
>net     ethext          detect 
>tcpflags,routefilter,nosmurfs,logmartians,arp_filter,arp_ignore=1
>tech    ethint          detect 
>tcpflags,detectnets,nosmurfs,routeback,dhcp,routefilter,arp_filter,arp_ignore=2
>cust    vlan+           detect          tcpflags,nosmurfs,routeback,dhcp

zones:
>fw      firewall
>net     ipv4
>tech    ipv4
>cust    ipv4

and configure your policies and rules are required

For this particular box, I configured the native ethint to be a 
'tech' subnet with things like the network switches and any shared 
services (eg DNS). One VLAN was allocated to each tenant, with DHCP 
DNS, etc all provided. Policies were set to block everything except 
cust->net, and then permit only those other connections (eg cust -> 
tech for DNS) required for things to work.

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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