tcpcrypt | Tcpcrypt is a protocol that attempts to encrypt | TCP library

by sorbo C Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | tcpcrypt Summary

tcpcrypt is a C library typically used in Networking, TCP applications. tcpcrypt has no bugs, it has no vulnerabilities and it has low support. However tcpcrypt has a Non-SPDX License. You can download it from GitHub.

The launch script starts tcpcryptd and adds firewall rules to divert Web and local port 7777 (an arbitrarily chosen port number) traffic to tcpcryptd. When the script exits (on Ctrl-C or kill), it restores your firewall config to its former state--no permanent changes are made. On Linux, you must first install libnfnetlink, libnetfilter_queue, and libcap. Optional: running make install will install libtcpcrypt and tcpcrypt headers, for building apps that use tcpcrypt’s session ID.

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Quality

Security

License

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Support

tcpcrypt has a low active ecosystem.

It has 231 star(s) with 112 fork(s). There are 19 watchers for this library.

It had no major release in the last 6 months.

There are 26 open issues and 4 have been closed. On average issues are closed in 711 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of tcpcrypt is current.

Quality

tcpcrypt has no bugs reported.

Security

tcpcrypt has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

tcpcrypt has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

tcpcrypt releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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tcpcrypt Key Features

No Key Features are available at this moment for tcpcrypt.

tcpcrypt Examples and Code Snippets

No Code Snippets are available at this moment for tcpcrypt.

Community Discussions

Trending Discussions on tcpcrypt

macOS NKE ipf_filter – IP checksum is 0

QUESTION

macOS NKE ipf_filter – IP checksum is 0

Asked 2018-Feb-01 at 16:17

I’m intercepting, modifying and re-injecting outgoing IPv4 TCP packets via an IP filter. The problem is that, after I alter the packet and set the IP and TCP checksums, when I analyse the resulting packet with Wireshark, the IP checksum equals 0 (the checksum I’m calculating seems to be correct since it’s equal to the Wireshark’s suggested one).

Here’s the procedure I’m following, I hope there's someone who can spot the error or suggest a better way of handling things:

...

ANSWER

Answered 2017-Jul-17 at 17:13

Are you seeing non-zero checksums if you don't run your program?

If not, it's possible that your NIC does checksum offloading, which makes the driver not actually insert any checksum into the packet (as the network interface will take care of it).

See section 7.10.2. (Checksum offloading) of the WireShark documentation.

Source https://stackoverflow.com/questions/45149249

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install tcpcrypt

You can download it from GitHub.

Support

If it’s not working, the most likely causes are the following. Visit [http://wiki.github.com/sorbo/tcpcrypt/troubleshooting](http://wiki.github.com/sorbo/tcpcrypt/troubleshooting) if you’re still unable to make it work. To build the test_tcpcrypt utility, run make check from user/. Run test_tcpcrypt -v to see the various tests that it can run.

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