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I have been troubleshooting some unreliable VoIP and call quality issues in our corporate network lately. Deployed QoS to prioritize voice traffic and bandwidth is definitely not an issue anymore.Moved on to use WinMTR on windows boxes and MTR on li...
We had some bad DNS query attacks lately, so I setup the Zone Based Firewall for my Cisco 891W router.However, immediately after setting it up, I realized the VPN and SSH access from outside is blocked. This is expected since ZBF was supposed to blo...
Hello,My old office uses Cisco 861 as a VPN router, with the WAN side setup to receive a dynamic IP assigned by Time Warner cable. Now we switched to a new office, with TowerStream which provide 4G SLA'ed 10Mbit service with static IP, and I get a C...
Oh that is a really good point, I didn't even think about checking that! So I took out access-class 23 in as you suggested, but still no luck.Here is the latest configuration with the updated changes from the above recommendation:NewCoGate#NewCoGate...
Hi Loren,Thanks for the help, but Option 1 doesn't work and gives an error message when I change it to inspect:%Protocol configured in class-map AllowSSH cannot be configured for the self zone with inspect action. Please remove the protocol and retry...
That fixed it! Thanks!I still do have the issue of not being able to ssh in to manage the router when not using the VPN. If I am just managing the router I prefer not having to need to VPN in, since SSH is pretty secure.Thanks!Kuangwei
Oh wow, you are right! The previous gateway was a netgear, I guess that arp cache got stuck in there. How do you properly clear the arp cache on a linux box to ensure this doesn't happen again?Thanks again for root causing this.Cheers,Kuangwei
So after serveral reboots on the Ubuntu box as DHCP, I converted it back to static IP. When that didn't work, I hard rebooted the Cisco router, and that fixed it, now I am able to connect to the internet on the Linux box. Since the Linux box is in ...
