Nick Kewney

Software Architect & Product Builder

Month: August 2009

Configuring site-to-site IPSEC tunnel on Cisco IOS

This post outlines how to set up a site-to-site VPN on a Cisco router. Both sides need to match crypto iskamp policy and transform set. crypto isakmp policy 1 encr 3des hash md5 authentication pre-share group 2crypto isakmp key SecureComputing! address xxx.xxx.xxx.xxx!!crypto ipsec transform-set MYVPN esp-3des esp-md5-hmac!crypto map MYVPN 10 ipsec-isakmp set peer xxxx.xxxx.xxxx.xxxx set transform-set MYVPN match address 110access-list 110 remark …

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Port Fowarding on Cisco IOS

a) We have a webserver on port 80 and we wish to forward port 80 from outside back to internal ip nat inside source static tcp 10.108.1.6 80 interface Dialer1 80 b) A torrent type port forward: ip nat inside source static tcp 10.108.1.1 61437 interface Dialer1 61437