IPSEC tunnel problem with Linux boxes
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Hi,
we finally replaced some old OpenBSD boxes at a customer location with a Netgate 1100 running pfSense 25.11. On our site is a PC Engines APU.6B4 with pfSense 2.7.2. The configuration of the IPSEC tunnel works as shown in the pfSense documentation. Actually there are no blocking rules in place. Services on the customer site are web, smb-filesharing, vnc and rdp Remotedesktop, ssh and mailservices with smtp and imap.
Out two macs, an iPad and a Windows 10 vm can use any of them, no problems. But our 3 linux boxes, 2 Arch Linux and 1 Zorin OS, are showing a strange picture:
Ping: OK
imap & smtp: OK
smb: downloads: OK, uploads: timeout
https: timeout during tls handshake
ssh: timeout
Remote desktops: timeout
The linux machines are sitting on the same network as the macs so there shouldn´t be any differences, running nc on the Linux boxes always returns open ports, in short: we don´t have any idea why they don´t work. Any help would be appreciated.Best regards,
Mike
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Hi,
turns out the problem is with the mtu. Reducing it to 1400 solves the problem.Best regards,
Mike