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I have a Cisco 861 With a static IP, which is &nbsp;part of a site to site VPN. Local HTTP traffic is routed thru the ISP's dns and not the base site. &nbsp; I am using Millenium a Library Automation Program which communicates on Ports 2000 and 4600, they told me There is a known issue with cisco and the SCCP altering traffic on ports 2000 and 4600 which makes the program inoperable. &nbsp;My firewall is turned off (so shouldn;t be a problem ), I can telnet to the Server IP on ports 2000 and 4600 and I can login no problem. &nbsp;When running the java applet, it never gets this far, so something is altering the traffic on ports 2000 and 4600, &nbsp;as this same machine works fine if i connect it directly without the router attached. &nbsp; I have been trying to use the command &nbsp;no fixup protocol skinny 2000 communicating via SSH to the router, it says Invalid Input detected at marker, &nbsp;the marker is pointing to the X in fixup. &nbsp;
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I have a Cisco 861 With a static IP, which is  part of a site to site VPN. Local HTTP traffic is routed thru the ISP's dns and not the base site.   I am using Millenium a Library Automation Program which communicates on Ports 2000 and 4600, they told me There is a known issue with cisco and the SCCP altering traffic on ports 2000 and 4600 which makes the program inoperable.  My firewall is turned off (so shouldn;t be a problem ), I can telnet to the Server IP on ports 2000 and 4600 and I can login no problem.  When running the java applet, it never gets this far, so something is altering the traffic on ports 2000 and 4600,  as this same machine works fine if i connect it directly without the router attached.   I have been trying to use the command  no fixup protocol skinny 2000 communicating via SSH to the router, it says Invalid Input detected at marker,  the marker is pointing to the X in fixup.  

Pix 860 Series affecting port 2000 and 4600 traffic

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).