For my live chat application I plan to use another port than 6667-7000 since they are mostly blocked by firewalls.
Avoid file-sharing risks - Page 2 | Macworld::
Allow All Incoming Connections: This default option blocks no traffic. Port- based access control is a typical feature of a firewall, and it’s odd that
http://www.macworld.com/article/61359-2/2007/12/tco_filesharing.htmlHOME |
Wich ports (not counting 80) are usually free and recommended to use so people behind firewalls won't get stuck ? Page 1 Many small business owners know how dependent they’ve ::
File Format: PDF/Adobe Acrobat - View as HTMLTypical firewalls use source and destination to determine what goes out of your email from exiting your network you would block destination port 25.
http://www.ebasedsecurity.com/reports/Network Security Strategy.pdfHOME |
Computerworld > Leopard's firewall a 'mess,' breaks Skype, says ::
Nov 5, 2007 seems to block inbound connections but ports show as open/filtered," he said. While that's typical of firewalls, Leopard also blocks
http://computerworld.co.nz/news.nsf/scrt/5B2C75D17EC10717CC257389006CFC00HOME |
What i'll do is just tie another IP / domain and put the chat on it using port 80....
hard to say....
there is no rule about this.
take a look to this list:
Handbook of Information Security: Threats, Vulnerabilities, - Google Books Result::
href=http://books.google.com/books?id=0RfANAwOUdIC&pg=PA517&lpg=PA517&dq=Which+ports+firewalls+typically+blocks+%3F&source=web&ots=pENk5rp-wi&sig=s49iMjqF4-wAxGgIwO15alFmQ08&hl=en&sa=X&oi=book_result&resnum=18&ct=result class=l onmousedown=return clk(http://books.google.com/books?id=0RfANAwOUdIC&pg=PA517&lpg=PA517&dq=Which+ports+firewalls+typically+blocks+%3F&source=web&ots=pENk5rp-wi&sig=s49iMjqF4-wAxGgIwO15alFmQ08&hl=en,,,res,37,)>Handbook of Information Security: Threats, Vulnerabilities, - Google Books Resultby Hossein Bidgoli - 2006 - Technology & Engineering - 3366 pagesWhereas ephemeral port ranges are not typically service port addresses, they are often blocked or disabled by firewalls. Domain Filtering Domain filtering
http://books.google.com/books?id=0RfANAwOUdIC&pg=PA517&lpg=PA517&dq=Which+ports+firewalls+typically+blocks+?&source=web&ots=pENk5rp-wi&sig=s49iMjqF4-wAxGgIwO15alFmQ08&hl=en&sa=X&oi=book_result&resnum=18&ct=resultHOME |
http://www.isi.edu/in-notes/iana/assignments/port-numbers
it might hel you a little bit
greets
holger
You are pretty stuck on this... All the ports that are open on a firewall have another purpose (whatever that may be) Any open ports that aren't needed is bad administation. I recommend you post in your FAQ a "Are you behind a firewall?" section and report what's needed to be done to enable your chat. However if one of my users came to me and asked for 4 ports to be nailed open for chat... wouldn't be pretty :D
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