-2
votes
1answer
26 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
147 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
423 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
939 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
198 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
124 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
534 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
3k 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 ...