Swann DVR-4 2550 port 23 open Home > CCTV Security Camera & Video Surveillance System Forums > Network Support > Swann DVR-4 2550 port 23 open This topic is empty. Viewing 1 post (of 1 total) Author Posts June 18, 2011 at 5:18 pm #31266 AnonymousInactive Anyone know why port 23 (telnet) is open on a Swann DVR security recorder? The admin credentials will not work for this. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In