The Cisco 2800 Series is the replacement for the 2600 Series. In my opinion, the biggest advantage to the Cisco 2800 Series is its versatility; you can use a 2800 Series router in a small, midsize, or large organization. For most network administrators, I think the determining factor is the number and types of interfaces and not necessarily the throughput of the router.
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Tag: cisco
Cisco releases bundle of router security patches
Cisco Systems Inc. has released a set of security patches for Internet Operating System (IOS) software, used his power routers and switches.
The patches were released Wednesday, the date previously set Cisco aside as the latest release date for its IOS patches twice a year. Cisco also published 12 security advisories describing the bugs, given that many of these vulnerabilities could be exploited by attackers to crash an IOS device.
One mistake, a mistake in SNMP, could be exploited by an attacker to take control of the router. However, only specially configured Cisco uBR10012 series devices, used by telecommunications companies to connect customers to broadband Internet, are affected by the flaw, Cisco said.
Symantec rated this fundamental obstacle for Wednesday and advised users of these devices who have configured their routers for redundant line cards to apply the patches as soon as possible.
Cisco is not aware of any attacks or previous public information that is based on the ruling.
Other errors that have been patched affect Cisco’s multicast, SSL processing and protocol software login. A complete list of security bulletins can be found on Cisco’s Web site.
Cisco 2500 Series Routers
The Cisco 2505, 2507, and 2516 are hub/routers that enable remote offices to provide both LAN and internetwork connectivity. These hub/routers combine the functions of a stand alone hub and router in one chassis to provide simpler setup, improved service ability and reliability, and integrated remote Simple Network Management Protocol (SNMP) network management.
Another note, through the BRI port, dial-up access is provided for backup or for low-cost, high-speed connectivity to private or public inter-networks. The two high-speed, synchronous serial WAN interfaces on each Cisco model deliver unprecedented flexibility, enabling access to leased lines, packet- and circuit-switched services, as well as -support of legacy systems such as IBM Synchronous Data Link Control (SDLC) devices.
All models use low-cost, unshielded twisted-pair cable wired in a star configuration for easy installation and offer from 8 (Cisco 2505), 14 (Cisco 2516), or 16 (Cisco 2507) Ethernet 10BaseT hub ports. No hub-to-router cabling is require. Everything is neatly contained in one compact desktop, rack-, or wall-mounted chassis.
Next, the Cisco 2516 includes an Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) port, allowing dial-up, high-speed access up to 128 kilobits per second (kbps). Cisco 2516 allows easy expansion by enabling additional units to be daisy-chained together using one of the 10BaseT ports.
Cisco 2500 Router hub/routers can be ordered with any of seven Cisco IOS feature sets. They range from low-cost, IP-specific feature sets to Enterprise (EN) sets that contain the full Cisco IOS. Each set includes Cisco’s unique AutoInstall capability, the “plug-and-play” router feature that allows rapid, economical router installation with -minimal expertise at remote sites.
Cisco 2500 Router access server series enables users to connect asynchronous devices such as dumb terminals, modems, router consoles, slot machines, and Integrated Services Digital Network (ISDN) terminal adapters (TAs) into a routed network. Running the same Cisco IOS software that runs the backbone of the Internet on a high-performance router engine, this product family also gives users integrated synchronous serial ports to backhaul routed traffic through high-speed T1/E1 lines.
Cisco1004 Router
The Cisco 1004 ISDN router broadens the range of WAN options supported by the Cisco 1000 series routers. The Cisco 1004 includes all the features of the highly popular Cisco 1003 ISDN router and adds an integrated NT1 to the ISDN BRI port. Therefore, the Cisco 1004 is appropriate for use in North America, where customers normally supply the NT1.
General Description
Device Type: Cisco Router 1000 Series.
RAM: 4.0 MB Weight: 2.0 lbs Built-in Devices: None
Data Link Protocol: HDLC , ISDN , Ethernet
Switching Protocol: Ethernet , PPP , Frame Relay
Source: Knowledge Computers Cisco1001
Cisco ASA Firewall Introductory Description
The Cisco ASA 5500 series is the descendant of the older Cisco PIX 500 series firewall which was very successful in network security implementations. The ASA is not just a pure hardware firewall, rather is a full featured security appliance. What we mean by that is that the ASA hardware appliance, in addition to being a solid network firewall, is capable of working also as a content inspection engine, antivirus, antispam, IDS/IPS engine, VPN device, SSL device etc. The extra security functionality of the firewall is achieved with add-on module cards which offer the additional security features.
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