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Cisco will usually use PPP over a (Layer 2) serial link. PPP is encrypted.<br />
<br />
The alternative would be a layer 3 managed link, in which case you've probably got an IPSEC tunnel in place anyway.<br />
<br />
Can you give us any more info on the link and router models?<br />

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Cisco will usually use PPP over a (Layer 2) serial link. PPP is encrypted.

The alternative would be a layer 3 managed link, in which case you've probably got an IPSEC tunnel in place anyway.

Can you give us any more info on the link and router models?


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hi<br />
&nbsp;what i currently hav is 2 wire copper leased line connecting the two offices. what im thinking is using Cisco 878 G.SHDSL routers as CPE on both ends. sorry i mentioned as serial link earlier... <br />
&nbsp;<br />
&nbsp;i would preferably like to configure a Ethernet bridge (use same subnet on both sites) and want to creat a encrypting mechanism between the two routers.<br />
<br />
thanks
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hi
 what i currently hav is 2 wire copper leased line connecting the two offices. what im thinking is using Cisco 878 G.SHDSL routers as CPE on both ends. sorry i mentioned as serial link earlier...
 
 i would preferably like to configure a Ethernet bridge (use same subnet on both sites) and want to creat a encrypting mechanism between the two routers.

thanks

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helo , can someone suggest what would be easiset way to encrypt a point to point conenction using cisco routers. encrypting data between CO and remote on a serila link.
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helo , can someone suggest what would be easiset way to encrypt a point to point conenction using cisco routers. encrypting data between CO and remote on a serila link.

encrypting a point to point connection

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.

Internet Protocol Security

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.