Category: Tech

All you need to do is disable DHCP
uci set dhcp.lan.ignore=1 or Network – Interfaces – LAN – DHCP Server – Ignore interface forum.openwrt.org/t/openwrt-as-dns-server/163458

The IP Reverse Lookup can return multiple domains for an IP.
There is also a query to check if an email is free or not.
A free API account is available, but after 250 requests it runs into a pumpkin and you must get a paid account.
viewdns.info/

HOME=${HOME:-/home/root} export HOME
This would set $HOME to /home/root unless it’s already set and not empty.
See Related:
unix.stackexchange.com/questions/521326/home-not-set-when-running-bash-from-rc-local

See the summary: socradar.io/top-5-cyberspace-search-engines-used-by-security-researchers/
sourceforge.net/software/compare/Censys-vs-FOFA-vs-Shodan/
cooltechzone.com/research/shodan-eye-is-not-that-big-as-one-might-think
www.researchgate.net/publication/348582896_A_Survey_on_Cyberspace_Search_Engines

Kali has a tool called spiderfoot to assist in OSINT gathering.
‘This package contains an open source intelligence (OSINT) automation tool. Its goal is to automate the process of gathering intelligence about a given target, which may be an IP address, domain name, hostname, network subnet, ASN, e-mail address or person’s name.’
www.kali.org/tools/spiderfoot/

You can get a free account on portmap.io
There are some limitation to the free account. only one port no custom dns no cert
Paid accounts offer more capability. portmap.io
Basically you connect to their servers with OpenVPN and then they forward a port from a public IP to your device which can be behind NAT firewall.
Here is a ‘How To’ for OpenWrt setup forum.openwrt.org/t/howto-free-cheap-vpn-port-forwarding-for-starlink-type-systems-portmap-io/142244

Routing with multiple VPNs Static Routers Routing Rules
see: forum.openwrt.org/t/interfaces-basics-logic/162280

Some discussion by the inhabitants over at OpenWrt forum forum.openwrt.org/t/set-different-upstream-for-specific-source-ip/132090

These resource have been known to be helpful
packetlosstest.com/
speedtestgo.com/

mutin-sa has the list gist.github.com/mutin-sa/5dcbd35ee436eb629db7872581093bc5