Wireless ACL - Block internal access

I need to block all access from the guest wireless to our internal network.
The following is the ACL I've come up with so far for the guest SSID. I thought seq 1 and 2 would work - 1 allow clients to communicate with DHCP and 2 block access to all internal IP addresses. I had to add seq 3 for clients to access the internet as a workaround for now. Unfortunately because of seq 3 clients can also access everything else on our internal network.. I believe the descriptions are correct. Not 100% sure. It's what I want them to do anyway.
Our DHCP Windows server hands our guest wireless clients an IP address and sets their DNS to the DNS of our ISP not our internal DNS server.
The guest VLAN DHCP range is 10.55.12.50-10.55.13.254.
Our internal network is any IP in the 10.55 range.
Our controller is a Cisco 4402.
How do I accomplish this?
ACL: GuestWiFi
Seq
Action
Source IP/Mask
Destination IP/Mask
Protocol
Source Port
Dest Port
DSCP
Direction
NoH
Desc
1
Permit
10.55.12.0 / 255.255.255.255
10.55.1.1 / 255.255.255.255
UDP
DHCP Client
DHCP Server
Any
Inbound
0
DHCP Server. Allow clients to respond to DHCP requests.
2
Deny
10.55.12.0 / 255.255.255.0
10.55.0.0 / 255.255.0.0
0
Any
Any
Any
Any
0
Block access to internal network - all 10.55 addresses
3
Permit
0.0.0.0 / 0.0.0.0
0.0.0.0 / 0.0.0.0
Any
Any
Any
Any
Any
0

Not a problem. The order is very important.
First allow access to all of your network. This ends up being last in the sequence. Then start denying access. For our network I permitted to all and then added vlans to deny. At the very beginning of the sequence is where I allowed access to specific devices/services on vlans that are blocked. Here is an example. There could be a better way of doing this. If there is please chime in.
ACL: GuestWiFi
Seq
Action
Source IP/Mask
Destination IP/Mask
Protocol
Source Port
Dest Port
DSCP
Direction
NoH
Desc
1
Permit
0.0.0.0 / 0.0.0.0
10.55.1.117 / 255.255.255.255
UDP
DHCP Client
DHCP Server
Any
Inbound
0
Allow printer
2
Deny
10.55.12.0 / 255.255.252.0
10.55.8.0 / 255.255.252.0
Any
Any
Any
Any
Any
0
Internal Wireless Vlan
3
Deny
10.55.12.0 / 255.255.252.0
10.55.5.0 / 255.255.252.0
Any
Any
Any
Any
Any
0
Management Vlan
4
Permit
0.0.0.0 / 0.0.0.0
0.0.0.0 / 0.0.0.0
Any
Any
Any
Any
Any
0
Everything

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Blocking international access

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since a good chunk of the junk comes from outside the country
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Murray --- ICQ 71997575
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"crash" <[email protected]> wrote in message
news:[email protected]...
> Saying it's a reasonable request and saying it's a
reasonable expectation
> are two different things. I would not do it, based
mostly on the reasons
> stated.
>
> No matter how many people might be able to see my
webpage, if I sell local
> products to a local market (say, energy), then the
global market is of no
> concern to me. Yes, I can reach them, but what does it
matter?
>
> If there is a circumstance in which the spam is causing
an overload of my
> servers to provide service to my local customers, and I
sell energy to a
> tri-state area, it may behoove me to limit my site to
only those that I
> serve.
>
> Just because my page is globally accessible doesn't mean
that's the best
> business model to uphold. Similarly, I don't code my
pages in anything
> but English because I don't have the facilities to work
with anybody that
> doesn't speak English. While they might be technically
able to buy my
> product, It's not feasible for me to sell it to them.
>
> Since very little was specified about the site, I did
not find it an
> unreasonable request. I do not agree on the OP's methods
arriving at
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only general
> patterns.
>
>
> "Murray *ACE*" <[email protected]>
wrote in message
> news:[email protected]...
>> You still think it's reasonable?
>>
>> --
>> Murray --- ICQ 71997575
>> Adobe Community Expert
>> (If you *MUST* email me, don't LAUGH when you do
so!)
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>>
http://www.dreamweavermx-templates.com
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>>
http://www.projectseven.com/go
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http://www.dwfaq.com - DW FAQs,
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>> ==================
>>
>>
>> "crash" <[email protected]> wrote in
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>> news:[email protected]...
>>> heheh, sorry, reader wasn't showing the 800
other replies to this, and I
>>> wasn't lookign at time of posts.
>>>
>>> :O)
>>>
>>>
>>
>>
>
>

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