Server Name Indication (SNI)

TLS does not provide a mechanism for a client to tell a server the name of the server it is contacting. It may be desirable for clients to provide this information to facilitate secure connections to servers that host multiple 'virtual' servers at a single underlying network address.
For taking care of this issue, SNI extension has been added into the TLS and published in RFC 6066.

Or to explain it in other words, Name-based virtual hosting allows multiple DNS hostnames to be hosted by a single server (usually a web server) on the same IP address. To achieve this the server uses a hostname presented by the client as part of the protocol (for HTTP the name is presented in the host header). However, when using HTTPS the TLS handshake happens before the server sees any HTTP headers. Therefore, it is not possible for the server to use the information in the HTTP host header to decide which certificate to present.

SNI addresses this issue by having the client send the name of the virtual domain as part of the TLS negotiation. This enables the server to select the correct virtual domain and present the browser with the certificate containing the correct name. Therefore, with clients and servers that implement SNI, a server with a single IP address can serve a group of domain names.

For more info, please refer :-
https://en.wikipedia.org/wiki/Server_Name_Indication
https://tools.ietf.org/html/rfc6066

Availability of 5 GHz WLAN Channels in India under unlicensed band

Availability of 5 GHz WLAN Channels in India under unlicensed band In India, Wireless Planning and Coordination Wing of Department of Telecom, under Ministry of Communication takes care of licensing of radio frequencies. In the latest National Frequency allocation plan 2018 (https://dot.gov.in/sites/default/files/NFAP%202018.pdf), Government of India (GoI), exempted the licensing requirements of the following radio frequency ranges for wireless usage and a gazette notification has also published for this (https://dot.gov.in/sites/default/files/License%20Exemption%20in%205%20GHz%20G_S_R_1048%28E%29%20dated%2022nd%20October%2C%202018_0.pdf) -- 1. 5150-5250 2. 5250-5350 3. 5470-5725 4. 5725-5875 References

Identity PSK ( iPSK)

With the evolution of IoT (Internet of Things), devices that connect wirelessly have increased many folds. From webcams, Smartwatches, fitness bands, firestick, Alexa, Google Home, and many more.., everything is going wireless for connectivity and so does the security threat. The main concern with IoT devices is the unavailability of the full wireless protocol stack (and in the majority of devices, support of 802.1x is not available). So, previously we only have the WPA-PSK option for connecting the IoT devices. In WPA*-PSK (WPA or WPA2) WLAN, a Pre-Shared Key (PSK) is configured and distributed to all the clients that connect to the WLAN. This leads to PSK leakage, and it can be accessible to unauthorized users (due to the nature of common PSK across all the devices). Therefore, there was a need to provision unique PSK or Multiple PSK per SSID. Identity-PSKs are unique pre-shared keys created for clients/groups on the same WLAN. Features of iPSK:- 1.Unique PSK for individual Cli

Summary report of APNIC 55 (APRICOT 2023) Meeting held in Manila, Philippines

APNIC Logo The APNIC 55 meeting was held in Manila, Philippines from 20th Feb to 02nd March 2023. The meeting was hosted by PhNOG, The Philippine Network Operators Group (PhNOG) and supported by DOST- Advanced Science and Technology Institute. Every year, APNIC conferences are held twice, the first of each year is held in conjunction with APRICOT and the second one is a standalone conference. The last such meeting held in India was in 2012, APNIC 33 (which was in conjunction with APRICOT 2012). APNIC 55 meeting was unique in multiple senses – i. Firstly, because of the possibility of potential hijack [1] [2][3] of the APNIC Executive Council by Cloud Innovation Ltd. / Larus foundation / NRS, the same organizations which have dragged AFRINIC (RIR for African Continent) into the Mauritius supreme court and at one point nearly halted the AFRINIC operations by getting its bank accounts frozen (over 25 lawsuits have been filed against AFRINIC by Cloud Innovation Ltd.). Number

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