Hi, in the iptables subsystem of Linux it's possible to get the fingerprint of the peer OS. See: man iptables-extensions under osf If this information is available it's possible to adjust behaviour (a little) to meet the peer's flaws and maybe bugs. Have you ever thought about that? Stef the Netherlands _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev