CODEWITHSUNDEEP
linuxtcpfirewall
Dacto
Dacto

Reputation: 2911

Linux OSI equivalent to Winsock2's LSP

I'm looking for Linux's OSI equivalent to Windows' winsock2 LSP.

In particular I would like to filter application layer protocols and traffic in linux.

Any information would greatly be appreciated.

Upvotes: 2

Views: 266

Answers (1)

MarkR
MarkR

Reputation: 63616

Not knowing what Winsock2 LSP does, it's difficult to answer your question.

  1. You can implement application-layer protocols with the appropriate packet(7) socket. Read the man page for more information
  2. If you want to do network filtering in userspace, you can use the netfilter_queue facility, typically combined with iptables NFQUEUE target rules. You can use this to selectively filter particular types of traffic through a userspace daemon.

I hope this helps.

Upvotes: 1

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