0
votes
0answers
28 views

Deny access from from/to subnet

We are running a VPC on Amazon. Our main network is 192.168.0.0/16 We have a subnet at 192.168.1.0/24 Two subnets which are entrypoints for our VPNs at 192.168.2.0/24 and 192.168.3.0/24 And more ...
-2
votes
1answer
29 views

Can I conclusively determine that a remote web server is denying access by blocking my IP address? [closed]

Let's say a web server administrator has configured his web server to deny traffic from my IP address or address range and throws an http 403 forbidden when I hit the site. (In this scenario I am ...
1
vote
1answer
152 views

Simple ACL not working

Network: Cisco 2921. Two subnets. 192.168.1.0/24 and 2.0/24. For some reason I can't get inter-subnet communication. I bound an ACL with the following statements to the inbound interface of each ...
4
votes
1answer
533 views

Firewall ACL management tool

Is there any Firewall ACL management tool which can generate set of ACLs for all my network, including switches, checkpoint, cisco routers, windows, linux etc? I think such tool would make sense as ...
2
votes
3answers
1k views

ProCurve ACL to prevent a subnet from leaving the switch

I have a single HP ProCurve 2610 in a remote location that is connected in with the rest of the network via SHDSL. There are two Layer-3 networks on this segment. ACLs are setup to deny one subnet ...
2
votes
1answer
216 views

Why do Access Control Lists in IP forwarding use an Inverse Mask?

While I was going through the concept of Access Control, I came upon the fact that ACLs use inverse masks. But while going through the explanation given in cisco site about Contrl lists, I noticed ...
1
vote
2answers
128 views

Controlling traffic on a small subnet

I have a small network with a business-class cable modem. I have a *.192/29 block assigned to the internal side of the modem. The first usable IP, .193, is assigned to the cable modem interface. I ...
0
votes
2answers
91 views

Where ACLs are applied

I am trying to understand ACLs and am unsure of where they are applied. Here's my example. I am trying to prevent communication between two VLAN interfaces. My source clients are on VLAN 1, my ...
0
votes
3answers
602 views

Does Solaris ipfilter simply stop filtering if it is not running?

There is a service for ipfilter which can be disabled or enabled. However, I am concerned that ipfilter might be a processes which would stop filtering if it was killed, crashed or otherwise not ...
1
vote
1answer
4k views

How can I block traffic between two specific VLANs

I have a Dell 6224 powerconenct switch acting as the core switch on our network. I have a number of VLANs configured, and the time has come for us to now consider blocking traffic between specific ...
3
votes
6answers
5k views

Cisco Firewall vs Cisco Router ACLs

What are the advantages of getting a dedicated firewall instead of, or in addition to, using ACLs and ip inspection on a router? I realize this might depend on the version of the router, are certain ...