Howto NAT VPN Traffic on a Cisco ASA

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Say you have to setup a Site-to-Site VPN to a third party who can’t accept traffic from the subnet you have created on your internal network because your network overlaps with theirs, or as in my case, they just want one address coming over to their network. The answer is to NAT that VPN traffic using a non-overlapping IP address.

Cisco ASA Firmware Update on Failover Cluster

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First we need to copy the firmware update and the ASDM on the Units. Please note these are not synced unlike the configuration. With savings via ASDM once again on the active to the passive IP and then upload it via browser, alternatively via CLI and tftp:

Cisco PIX/ASA Causes SMTP Banner Corruption

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Traffic inspection rules on a Cisco PIX or ASA firewall will sometimes cause the SMTP banner to appear corrupted. When testing access to your mail server trough AsA, you may notice that the SMTP banner looks like this:

OSPF Konfiguration IPv6 für Cisco IOS

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Aus gegebenem Anlass hier mal ein Beispiel einer OSPF Konfiguration für Cisco IOS. Das ist wirklich relativ einfach. Hier nochmal alle Schritte zum nachvollziehen:

Cisco 2600 Tipps und Tricks

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Password recovery *=*=*=*=*=*=*=*=* Zuerst verbinden wir uns mittels Terminal auf den Router und ermitteln mit: router show version Cisco Internetwork Operating System Software . . . Configuration register is 0x2102 die Einstellungen des Konfigurationsregisters (0x2102)….

HPing – Remote DoS für Cisco IOS

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Cisco Systems hat kürzlich eine Warnung in Bezug auf die Router und Switches des Unternehmens herausgegeben, die unter der Internetwork Operating System (IOS) Software von Cisco laufen und für die Verarbeitung von IPv4-Paketen (Internet Protocol…