k0fcc
Kilo Zero F C C
Premium
join:2000-09-05
Longmont, CO
|  AT&T Net Client/Dialer/MTS Ports
For those of you using the AT&T Net Client (and there are many of you), here are the ports that need to be open on your firewall in order to allow you to use Mesa Networks' service.
•TCP 21
•TCP 50
•TCP 80
•TCP 389
•UDP 500
•TCP 709
•TCP 5080
Typically (almost 99% of the time), the problem lies with UDP port 500. If you get stuck in "negotiating keys" then this is the problem. There is a program which will allow you to change UDP ports. I'll try to post it here when I get to my work computer.
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k0fcc
Kilo Zero F C C
Premium
join:2000-09-05
Longmont, CO
| Windows program to change your udp port to work with some NAT/DHCP routers.
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k0fcc
Kilo Zero F C C
Premium
join:2000-09-05
Longmont, CO
| reply to k0fcc
More Clarification
IP Protocol 50 - For IPSec Tunnel
UDP Port 500 - For IPSec Session Key Negotiations
TCP Port 389 - For Digital Certificate Revocation List Check
TCP Port 709 - For Digital Certificate Processing
TCP Port 5080 (for v5 clients) - Retrieve Tunnel Server List
TCP Port 21 - For software updates (Desirable, but non-critical) (Used for FTP)
TCP Port 80 - For active end user experience tracking (Desirable, but non-critical) (Used for HTTP)
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