with IPSEC VPN local web site cannot be reached

Question

Hi, I have a problem with IPSEC VPN: 
 I can not access the local web site through VPN from two of branches and see " web site cannot be reached ". 
 I found out the acceptable MTU size on these branches is less than 1500 ( around 1300) so: 
 I changed the MTU size on the Cisco Router (small business ADSL) to manual 1300 
 and changed the computer MTU to 1300 
 also on sophos UTM9 selected "Support path MTU discovery" and also tried without that ... 
 but the problem not solved yet. I feel really frustrated :( :( 
 Can you please help me?

sachingurung · Answer

Hi, 
 Suggest you to change the MTU values back to default. Refer https://community.sophos.com/kb/en-US/115579 and verify the configurations. 
 If the configurations are proper, do a tracert to the website and see which hop gives you an RTO. 
 Thanks

with IPSEC VPN local web site cannot be reached

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