>From a Cisco Router Manual: The problem occurs because many Web servers block ICMP messages, which causes the server to continue sending 1500-byte packets. These packets are dropped, and as a result, the requested Web page doesn't load. If the Web server is properly configured and ICMP messages are not blocked, the server should adjust its MTU and retransmit until the page loads completely. A partially loaded page occurs when the initial data packets sent from the Web server are under the 1492-byte maximum but then a packet is sent that exceeds this maximum. The server continues to retransmit this oversized packet resulting in a partially loaded page and a "waiting for reply..." message in the status bar.
Hermann > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Darrell LaRock > Sent: Tuesday, July 23, 2002 8:33 PM > To: [EMAIL PROTECTED] > Subject: [IMail Forum] Ports > > > Typically when we setup servers that are directly connected to the > internet we explicitly deny all ports except the ones that are needed > for the application of the server. > > I wanted to make sure and see if there was a technically valid reason > that I should allow ICMP traffic to and from the server. My idea is to > only allow traffic on ports 25 inbound/outbound, 110 inbound + what port > I decide to run web messaging on. > > Thanks > Darrell > > > > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > Please visit the Knowledge Base for answers to frequently asked > questions: http://www.ipswitch.com/support/IMail/ > Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
