Hi. I receive mail from my friend and somebody wrote (below).
How can I fix it? Is there is any settings about it?
I use FreeBSD 6.3

Quoted list:

The following BGP-specific workaround information has been provided.
For BGP implementations that support it, the TCP MD5 Signature Option should be enabled. Passwords that the MD5 checksum is applied to should be set to
strong values and changed on a regular basis.

RESULTS:
Tested on port 21 with an injected SYN/RST offset by 16 bytes.
Tested on port 22 with an injected SYN/RST offset by 16 bytes.

Moved: This thread is more suitable in the Other *NIX Forums *BSD Forum and has been moved accordingly to help your thread/question get the exposure it deserves.

IIGC you need to check if IPv4 TCP-MD5 (RFC 2385) actually works in FBSD-6 (or FBSD-7), (re)compile the kernel with FAST_IPSEC, TCP_SIGNATURE and crypto support and (re)build Quagga with MD5 support.

Thx for help