Tag: ipv4

152 The slash after an IP Address - CIDR Notation 2013-10-23T15:57:09.410

86 How do you calculate the prefix, network, subnet, and host numbers? 2014-03-31T01:06:08.070

71 Is "IPv10" a joke or a serious RFC draft? 2017-09-09T14:19:21.763

55 Why are IPv4 addresses running out? 2018-10-13T14:53:40.247

42 Why do we need IPv6? 2015-11-06T12:27:06.270

39 How to check for a valid public IP address? 2013-07-10T10:40:49.143

39 Why is such a large IPv4 range assigned to localhost? 2013-08-16T07:26:07.343

36 How would a router with /32 WAN subnet mask communicate with the rest of the Internet? 2013-05-19T19:32:22.587

32 Why are IPv4 addresses 32-bit? 2014-05-15T15:16:36.530

29 Difference between Subnet and VLAN? 2013-05-26T09:50:31.643

24 Why 192.168.*.* for local addresses? 2014-01-13T22:28:29.123

23 Should IPv4 ICMP from untrusted interfaces be blocked? 2013-06-26T13:24:44.963

20 Risks of using non-private IP addresses internally? 2013-09-25T22:14:44.427

19 Reason for both a MAC and an IP address 2013-09-22T14:35:28.450

17 How does multihoming work with ipv6? 2013-08-31T14:19:33.617

17 Exactly when is PMTUD performed? (Path MTU discovery) 2014-12-04T15:43:54.517

17 What is the practical use of a /31 CIDR or 255.255.255.254? 2018-07-22T20:47:34.680

16 Bad Mask for IP Address Error 2013-06-20T19:03:23.710

16 Confusing A, B, C network classes 2014-02-25T15:25:25.860

16 Why use IP if we already have a MAC address? 2014-06-24T21:04:45.383

15 what is the purpose of network address? (aka subnet address) 2014-09-28T12:24:02.043

15 Does CIDR really "do away" with IP address classes? 2015-07-09T18:40:27.363

14 IPv4 Address Space Planning Best Practices 2013-06-02T08:22:00.050

14 Duplicate IP Address - which one wins? 2013-08-23T15:58:25.620

14 Finding IP Addresses for Social Network Sites 2013-09-04T03:23:13.813

13 What is the proper term for ipaddress/hostname:port 2014-06-17T06:47:15.350

13 How are IP addresses mapped to MAC addresses? 2014-06-26T09:52:12.810

13 Why are there 3 ranges of private IPv4 addresses? 2016-06-09T15:43:56.283

13 Possible (bit) patterns of a netmask 2016-07-05T23:12:18.913

12 How can I formulate the communication latency in TCP/IP? 2013-05-20T12:12:25.007

12 What is the use of wild card masks vs normal masks 2013-05-21T21:10:35.713

12 Wifi TCP iperf throughput: 1 stream vs multiple streams? 2013-09-16T19:11:32.363

12 mtr output with high packet loss on one hop 2013-11-07T02:51:07.587

12 What is a non-portable IPv4 address block? 2014-01-18T16:01:23.597

12 What happened to IPv5? 2016-03-04T12:16:16.663

11 Why don't iperf, scamper and path MTU discovery packet captures agree on the path's MTU? 2013-05-16T02:17:00.993

11 /31 Point-to-point bitmasks 2013-06-03T04:48:25.687

11 Do today's routers prevent fake IP headers? 2013-07-16T10:51:08.057

11 How are the hosts in the tracert 216.81.59.173 able to use random domain names? 2013-11-04T22:38:35.057

10 VLAN and subnet relationship 2013-05-26T10:48:27.667

10 Directed and Limited Broadcast confusion 2013-08-19T11:17:31.530

10 Using IP subnet at multiple datacenters 2018-01-20T18:46:55.650

9 Migration from IPv4 to IPv6 strategies 2013-05-10T10:11:43.073

9 Circular BGP propagation 2013-05-31T03:28:51.243

9 Does SCTP work over the Internet? 2013-06-06T14:26:25.210

9 How to find a list of devices connected to my network (IP's and MACs) 2013-06-24T17:41:31.160

9 Using IP addresses from IP pool given by ISP 2013-07-17T05:54:15.973

9 Packet sizes in a TCP stream 2013-08-31T14:48:51.690

9 Unicast RPF On the Edge 2013-09-07T01:59:57.793

9 Differences and functions of type codes 0800 and 0806 2014-01-15T01:30:23.077

9 IPv4 shortage is now becoming a reality - what is needed for IPv6 to work? 2014-06-13T23:34:51.813

9 Under what circumstances are multiple loopback (127/8) addresses useful? 2015-04-24T08:57:29.120

9 IPv4 Segment 100.64.0.0/10 2016-10-21T10:41:38.913

8 Finding the IP of a MAC Address 2013-05-31T22:43:18.377

8 Asymetric routing - causes and effects? 2013-06-25T20:26:13.367

8 Wireshark Filter - OSPF Database Description Link State ID 2013-07-16T17:38:41.133

8 How does NAT share one public IPv4 address across multiple private IPv4 addresses 2014-06-02T05:05:33.630

8 If two NICs are bonded and connected to different switches how does a router decide which switch to forward the packets to? 2014-06-23T14:49:09.093

8 What is the correct mask to use with 224.0.0.0? 2015-08-02T22:48:07.947

8 Is there anything stopping me from using Class A addresses on my own network? 2018-02-13T23:46:33.597

8 Does IP provide QoS or not? 2018-02-15T14:43:51.130

7 F5 session timeouts 2013-09-12T07:45:49.363

7 How can hosts with public IP addresses have nodes with private IP addresses in their traceroute? 2013-11-04T17:40:43.370

7 will ping work if there are 500 routers between pc1 and pc2? 2014-02-25T17:52:38.973

7 Maximum IPv4 header size 2014-03-17T13:32:51.317

7 Duplicate IP Address Prevention? 2014-05-14T12:51:41.233

7 why TTL value 1 in IGMP 2014-06-27T06:31:49.583

7 How to divide an IPv4 network into subnets of different sizes as efficiently as possible? 2015-03-10T23:05:14.967

7 How are MAC/IP addresses used in routing 2015-10-13T17:16:22.213

7 Load Balance NIC, Switch and Router (Redundancy) 2015-10-21T13:01:36.257

6 IP prefixes by state (geolocation) 2013-05-17T18:54:40.160

6 Establishing IP DHCP Snooping 2013-08-12T15:26:09.503

6 Position of source and destination IP in an IP packet 2013-08-28T18:19:15.587

6 Is it possible to use single MAC address for multiple IPv4 addresses? 2014-01-04T09:54:14.000

6 How HTTP is converted to TCP and then how TCP converted to IP? 2014-01-24T18:58:53.723

6 How is the IP prefix passed to the router? 2014-02-19T14:14:14.877

6 Will hosts do IP Fragmentation? 2014-04-07T16:07:37.003

6 What is Null 0 interface? 2014-04-19T06:44:05.107

6 Why are ethernet / mac -addresses in hex and ip numbers in decimals? 2014-09-23T14:42:31.090

6 Why is the IP layer aware of higher layers in the network stack? 2014-12-28T02:26:47.207

6 Network Byte Order 2015-11-10T12:01:06.520

6 Why do I get "% Warning: use /31 mask on non point-to-point interface cautiously" when I use a /31 subnet mask? 2016-01-16T18:52:53.287

6 Why is the ICMP protocol considered to run at layer 3 on the Wikipedia page? 2016-03-15T17:25:11.437

6 Why don't we use MAC address instead of IP for having "Internet" or doing communication? 2016-06-18T11:15:09.217

6 Does IPv6 remove the need for a VPN? 2017-02-01T17:12:11.923

6 Why can I ping IP addresses from 127.0.0.1 to 127.255.255.254? 2017-10-02T07:41:54.237

6 Is a TCP server limited to 65535 clients? 2018-02-17T00:09:00.440

6 Why couldn't a nework address be used as as broadcast address as well? 2018-05-21T10:00:54.633

6 What Cisco will discard TTL=1 packets for own interface? 2018-11-26T19:01:45.243

5 How do the Application, Presentation and Session layers of the OSI model map to TCP/IP's Application Layer and vice versa? 2013-06-05T16:09:13.710

5 /23 PI space - breakup 2013-07-16T22:18:13.177

5 Obtain Static IP set in DHCP on Cisco ASA 2013-09-26T18:25:15.810

5 Subnetting aggregation 2013-10-07T14:12:22.170

5 NAT translation mystery 2014-02-28T06:40:28.970

5 60 devices on a /29 network 2014-06-07T14:39:57.230

5 IP Traceroute RFC 1393 2014-08-15T07:00:54.533

5 How to divide network into subnets? 2014-10-27T19:22:23.740

5 Don't fragment set, still being fragmented 2014-11-18T20:22:41.780

5 Raw IP communication? 2015-01-16T22:02:14.833