I need to import or export packages or components such as TServerSocket or TClientSocket or Indy Components from Delphi 6 or Delphi 7-8 Professional or later editions into lazurus IDE.
Packages are compiler-specific, and components typically depend on specific compilers' RTLs, too. Although FreePascal does have a Delphi7-like RTL, it is not the actual Delphi RTL, there is no 1-to-1 correlation for many functions/units/classes, or there are functional differences between them. So, no, there is no direct way to use Delphi packages as-is in FreePascal/Lazarus, and vice versa. You need to create and compile new packages for each compiler that you want to use components in, and make sure their source codes are compatible with those compilers.
TClientSocket/TServerSocket are proprietary to Delphi's compiler/RTL, they can't be used in FreePascal/Lazarus.
Indy 10 is already available in Lazarus' OPM. You don't need to download and install Indy manually, unless you are installing a newer update than what OPM has available.
I dont wish to download from torry.net or github because i am scared of a virus.
Source code can't carry viruses. Only binaries can, and components are rarely distributed in binary form since binaries are platform-specific and even IDE-specific. It is more flexible for component authors to distribute source code that can be compiled in supported compilers as needed. And it is extremely rare that a compiler would produce component binaries with viruses in them (only if the compiler itself is infected).
Some malware are private crypted and may have FUD runtime detections therefore comeout clean even if scan on virustotal.
Again, that only applies to binary executables, not to source code.