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I'm looking into a problem for a client and this is the current config for the network under discussion:...--------------------..|......Ring 112......|..|--------------------|.R1.........................R3.|...........................|.|................
Currently we have a Cisco PIX 535, with version 6.3(3) on it. The scenario is as follows: We have a newly-installed IBM z990 host-system that is running IBM's Enterprise Extender(EE). EE is basically IBM's HPR over IP. It allows SNA to be encapsulat...
As I suspected, the problem was the 802.1q header. I had our VTAM folks shut off the VLAN tagging and the problem went away - the traffic passed through no problem. Kind of an interesting problem though - I opened a ticket with Cisco last week and ha...
That appears to be a problem with FTPs as I have found. PASV mode also fails.A firewall is usually configured to deny inbound connections to an FTP server using any port other than port 21. Under PASV FTP, the firewall that protects the server needs ...
