We recently deployed an IPSec VPN solution using Cylink's NetHawk hardware. We went with NetHawk because according to Tolly it does 3DES encryption @ wire speed. Anyway, the problem is that when we leave the MTU on the gateway router at the default 1500, e-mail attachments make it through the NetHawk VPN box. However when we reduce the MTU to 200, the e-mai attachments do not make it through the VPN box ALTHOUGH the e-mail itself makes it through. But, the attachment gets detached in transit. Below is our current configuration-- H 1------- S--------NH VPN1----------R1 .............................. R2----------NH VPN 2------H2 H1 & H2 are hosts exchanging e-mail, S is a switch NH VPN1 & 2 are NetHawk VPN boxes on either side of the Internet R1 & R2 are routers on either side of the Internet. Perhaps, a moe general queston flowing from this is what (if any) are the MTU or PMTU related issues within a VPN solution. Thanks. /fola/ _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
