Blog Archives

SSH to Cisco ASA fails, unable to negotiate, no matching key exchange method found.

Short story: With SSH-clients based on OpenSSH 7.0 (like my OSX Mac) I cannot connect with SSH to a Cisco Firewall. To connect anyway I must add the parameter -oKexAlgorithms=+diffie-hellman-group1-sha1 to ssh. sha1 is deprecated as hash algoritm and should

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Posted in Cisco Networking, Cisco Security

Cisco ASA builtin scp server

The Cisco ASA contains a builtin scp server. By enabling that you can use the scp protocol to transfer files to and from the server using an scp client. scp is a secure file transfer protocol. It is almost like

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Posted in Cisco Networking, Cisco Security

IOS Archive feature

What changes have been done since last “wr mem”? Or more like; what differences are there between running-config and startup-config? Use the archive-feature! r2#sh arch conf diff nvram:startup-config system:running-config Contextual config diffs: line vty 0 4 +transport input all +transport

Posted in Cisco Networking


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