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Questions tagged [access-control]

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For questions about access control lists (ACLs). For instance, you want to limit network traffic to increase network performance or provide traffic flow control on your network device. ACLs also provide a basic level of security for network access by defining which part of the network/server/service can be accessed by a host and which cannot.

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I have the following scenario: How to allow user access only to the VNET that contains Application 1 and restrict access to the VNET that contains Application 2. The user is authenticated through an ...
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Pure ALOHA has a vulnerable time of 2T where T is the transmission time for a single frame. Pure aloha has a maximum throughput of 18% but how is it actually derived from Poisson's distribution?
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In Packet Tracer, I have a private network with 5 different VLANs and inter-vlan routing enabled on R1. These are connected via an edge router to an ISP. On the interface S0/0/0 of R1 in direction in ...
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To prevent IP spoofing in a VLAN I configured the following access list ip access-list extended MITARBEITER permit tcp 10.15.240.0 0.0.0.255 any permit udp 10.15.240.0 0.0.0.255 any permit icmp 10....
Rubus's user avatar
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I have a Huawei 6851 and this is my config acl ipv6 number 3006 description MY-IPv6 rule 10 permit ipv6 source 2001:x:x:x::x:x/112 rule 20 deny ipv6 destination 2001:x:x:x::x:y/128 rule 30 permit ipv6 ...
Blackmetal's user avatar
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Can somebody give me an example, where deny statements are needed? Why can't we just permit all the traffic according to specifications and then let the implicit deny all capture the rest?
Rubus's user avatar
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Its intuitive for Aloha and p-persistent CSMA that the more we try to send during a packet time the more the collisions we get; however, I have been unable to justify why non-persistent CSMA is ...
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I'm trying to set up a network in packet tracer with inter-VLAN routing. I need to restrict one of the VLANs to only accept traffic from the 172.25.30.0/24 network. To do this I am using an access ...
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I am struggling to understand how the probability value P is chosen for P-persistent CSMA for any particular station, what's the logic behind this.I have read from Wikipedia . P-persistent This ...
S. M.'s user avatar
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I am trying to configure ip sla for non directed link . I have configured static route to reach to non directed link 1 configured track 2 configured ip sla 3 configured access-list 4 configured NAT 5 ...
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I'm working on an Aruba 2900 series switch and I'd like to restrict any traffic except traffic from/to a handful of domain names. What I have to far: ip access-list extended "production" ...
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I have two private IP addresses, want to make them NAT to 203.0.113.0/2 public IP address. WAY 1 : Static NAT (2 ip addresses NATted to one by manually) WAY 2 : PAT (Router gives port number ...
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how do we know what ACL configuration mean? an example access-list 89 permit tcp host 192.168.10.2 any eq www? does this allow the traffic from the host 192.168.10.2 inside? i'm a bit confused. any ...
hithere's user avatar
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In slotted ALOHA, the maximum efficiency is 36.8% when only one station transmits in one time slot . My question is, if only one station is transmitting in one time slot, then there will be no ...
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As I read on Section 4.3.8 of this page https://www.manrs.org/isps/guide/antispoofing/, The following code: ip nat inside source list INSIDE pool OUTSIDE overload will translate packets with a ...
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